Voltage Meters News
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New Report Predicts Over 719 Million Meters in Use by 2020 - msnbc.com
namely smart meters, broadband over power line, high voltage direct current transmission systems and energy storage. The report also includes an analysis of the four smart grid technologies in the four major ...
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New electric meters in Sutherland - North Platte Bulletin
The new meters also monitor voltage levels and alerts NPPD to possible issues that could potentially cause an interruption of service, according to a company statement.
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Liberated copper wire causes fit of problems - San Francisco Examiner
thieves went underground to nab copper from electrical vaults that help feed high-voltage electricity to buildings ... to a period some years ago when thieves broke into parking meters. “It was just a few at first ...
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Lochte lights up Pan Pacs with sizzling 200 medley - Reuters
... Reuters) - Ryan Lochte delivered the high voltage moment of the fourth day of the Pan Pacific Championships on Saturday when he narrowly failed to improve his own world record in the men's 200 meters individual ...
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ABB Starts New Factory In India - Yahoo Finance
of 16,000 square meters, is expected to have monthly production capacity of 100 units and will employ approximately ... Low-Voltage Products and Process Automation supply products, systems and solutions to customers ...
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The journey of juice: Inside the electric grid - CNET News
The term "smart grid" often refers to smart meters on homes and businesses ... voltage, and the phase angle, at a far higher volume than now. Rather than report once every four seconds, these phasor measurement units ...
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Recovery Act: How Obama's Stimulus Is Changing America - YAHOO!
The act will also triple the number of smart electric meters in our homes ... and tiny molten-metal batteries to provide cheap high-voltage storage. That last idea is the brainchild of MIT's Donald Sadoway,
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ComEd to install solar panels in 'innovation corridor' - TMCnet
... is taking a more comprehensive approach in employing smart-grid technology than what is being done by other utilities by going beyond just smart meters ... technology will reduce surplus voltage on distribution ...
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ComEd Launches Nation's First 'Smart Grid Innovation Corridor' - Newsblaze.com
It will build upon the information-rich Smart Meters currently installed in 130,000 residences within this area ... Dynamic Voltage Regulation: "Greening" the electric system by using Smart Grid technologies to ...
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Fan Dipole fed with twinlead? - eHam.net
I've had pretty good results loading it up from 80 meters to 15 meters ... I am deeply dubious that a 4:1 air-cored voltage balun is a good idea. In fact, my gut feeling is that it would be better if you had nothing ...
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Top Voltage Meters Results
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Other Voltage Meters Results
Resolved Question: Voltage charge rate on 2001 Micra?
The the 15 month old battery on my car hardly turns the engine over if I leave the car two days or more. A check with a volt meter showed after a five mile run the voltage across the battery was 14.5v. There is only 0.08 ampere drain on the battery when an ammeter is placed in series with it when the engine was switched off. This I put down to the security system. All connections are tight
and very clean on the battery and where the leads connect to around the engine. Once started and run for a mile or so it starts very quickly just like a new battery. the battery was well over £50.00 not
cheap for a small engined 1 litre car. Any one any ideas apart from I may have to purchase a new battery. The last one expired after 6 years use.
moreResolved Question: Battery diagnostic question?
I'm not sure if my battery is kaput, I tried to start my CBR600F-H with a volt meter across the + & - terminals, the initial reading was 12.32v, as i hit the start button it went down to 7.1v and stopped turning the starter motor, when the button was released the voltage started slowly creeping back up at about .01v every 4 seconds Until it got to 10.07v then all of the sudden it shot up by .05v a second till it hit 10.60v.
I am wondering if there is a dead cell in the battery as when the bike is running it is putting out 13.4-13.8v so i know it is charging.
It just seemed really strange the way it shot up that way then carried on as it had been before.
moreResolved Question: Physics coursework for Advancing Physics?
Quick question;
This coursework is for a few days and I really should have gotten it done by now, but maths has been taking up all my time.
Basically, im doing the Advancing Physics coursework and the one thing stopping me from completing it is working out the resistance of my tables.
In the circuit, the voltage input was 4.77V, the current then travelled through a thermistor and into a volt-meter and measured 4.3 V, this then went through a resistor and into another volt-meter and came up as 0.5V
How do I measure/calculate the resistance of the thermistor and the resistor? an equation would be helpful as I have many of these to do.
Thanks
moreVoting Question: my cat killed itself?
my cat got caught in our electric fence we own 5 acres of land the cats never even go more than 100 metres away from the house and it was just a kitten it must have been chasing a mouse wat can i do to protect my other cats getting a lower voltage fence is not and option we need it to keep boars and other dangerous wildlife awayand im not about keep my cat inside all day and every day its not fair to them or meand im not going to lie the only reason i have these cats is to keep rats away i dont love them like i love my dogs and i really dont care if they die i just dont want to keep having to by new ones
moreResolved Question: How does a car temperature gauge work, in detail? (standard thermistor and dashboard meter display.)?
It may seem a silly question, but I though it would just be a thermistor in series with an ammeter (or amp-meter, really a micro-ammeter) from the 12V battery supply. I appreciate that a lot of these are hot-wire ammeters with a square law response (which is not a problem as there are only indicative) as they are more robust and slower-acting. What I am trying to do is replace the engine driven cooling fan with an electric one on an old Toyota Spacecruiser. I have fitted a Vauxhall Vectra fan successfully and it works fine, but at the moment I have to turn it on and off manually. I was looking to use the DC voltage at the thermistor to control the fan (via a pupose designed electronic controller) but I see (on an oscilliscope) that there is an AC square wave signal at that point which must be coming from the temperature gauge. Maybe it is being used to pre-heat the thermistor to get a faster response (I don't know why, really) but at the moment it is mucking up my electronic circuit design!
Silly question, I suppose, but if any clever automotive electronics engineer happens to know, then I would be very grateful!
Regards All, Peter.
moreResolved Question: I bought my very first meter tester but I don't know how to properly use.?
I bought a multitester MT-1210 I read the instructions but I don't know how to use. I want to measure the voltage of a laptop power supply. I have really no idea what I'm doing. I'm too scared in case if I damage anything. If anyone can help me out I would be really grateful. Thanks for those who answer please don't respond to anything horrible or nasty. I'm just a novice at these things. Someone has to start somewhere right?All this sounds straight forward to actually put things in Voltage however, I'm not sure which is what. Not all is written on to say whether it's V or A. Some have just 20, 200, 500. It doesn't say at all whether this is Voltage. This is the actual problem.
moreResolved Question: what should be the inverter voltage to drive 50 metres of el wire?
moreResolved Question: Can I stick the probes of muti meter into one of connectors coming out of psu to measure if the is voltage?
The fan on psu does not turn the mains light comes on.Can I do the above without connecting any other connectors.Would the psu be ok with nothing connected to it
moreResolved Question: problems with low voltage bathroom lights?
I am having trouble with one of my low voltage lights in my bathroom. It is using an electronic converter which reduces the voltage from 240v ac down to 12v ac. The maximum wattage of the bulb is 60 watt. I know that the existing electronic converter has burned out as it is not working at all and is burned to look at and smell. I got a replacement from my local lighting shop but when i connect it up it still does not work. I know the 240v supply current is present from my meter but it wont light the bulb. When i check the output from the electronic converter it is 0v ac. I took it back to the shop and the guy gave me another one to try this time a different manufacturer, but it is still doing exactly the same thing. It is showing a primary voltage of 240v ac going into it but absolutely nothing comming out of it. Can anyone give me some advice on this as i dont want to take it back as i am unsure if it something i am doing or if the second one is faulty too. many thanks
moreResolved Question: Ford Focus electrical problems?
It is a 51 plate ford focus and the battery keeps dying (The battery is about 12 months old). I am a bit suspicious to what the problem could be as the front windscreen as leaked water into the car before and filled the passenger foot well up by a couple of inches. (The leak has now been fixed)
I have taken the battery out and charged it up then put it back in. When I checked the voltages I got 12.5 volts with engine off and 14.5 volts with engine running. But after a few days off sitting and a few small trips it won't start. So something most be draining the battery. Any suggestions or tests I can do ? I have done some test on the alternator but not sure if it is right.
I started the engine and put a meter between the battery + terminal and the alternator positive and got a reading of 0.45 - 0.55 volts. The test said anything above 0.2 volts would indicate a problem with the alternator. Is this correct.
What other tests can I do to make sure the battery is OK and alternator is OK or to check for sorts ?P.S. Just before the bettery dies if I turn on any heaters, lights etc. All the dash lights start to flash. But this would only be due to the battery having low voltage I guess.
moreResolved Question: CDI creating voltage upto coil, but coil is not sparking?
my speedfight CDI (aci 100 (basic ignition)) i think doesn't work because when i disconnect the coil (H/T) it creates a voltage along the line to the coil, but when i connect the coil then it DOESN'T spark and my rpm meter measures zero, (when i had the coil disconnected the rpm meter worked fine and measured the kicks) is my CDI dead? Also i have a new stator and coil and spark plug so i doubt its any of those. Also, in my haynes manual i cannot see the right wiring diagram as my CDI has a black / red which i think comes from the stator plate, but on the manual it says the black / red goes into the ignition then changes colour to black / white (which is also on the CDI) its all very confusing, Any help is welcomed. Thank you.
moreResolved Question: Would an electricity meter misread if the voltage changes?
I have a really old meter put in 15 years ago by the electricity company who weren't making enough money with the old one. It is rated at 240 volts.
About 12 years ago or so, the national voltage changed from 240V to 230V, so that appliances made for continental Europe (220V) could be used here.
Has this reduced voltage (and therefore either reduced performance or higher current) affected how the meter reads (which is in kWh)?
moreResolved Question: Why can I measure phase-neutral volt with probes in high current three phase systems and not fry the meter?
Clamp meters are usually used when measuring current for isolation. How is protection from high current achieved for measuring voltage with these small clamp meters?Hi John your explanation was pretty clear for me :)
moreResolved Question: Potential divider question?
complete the table showing readings of an analogue meter with resistance 200kohms for a series of different resistances and input voltages.
The meter is across resistor 2 and is a series circuit of a cell, R1 and R2 with the meter in parallel to R2
Input voltage......R1......R2.....Output Voltage
12..................100k...200k.......______
6................... 25k.....10k.....__________
24...................5k.......20k....__________
6....................250......100....___________sorry for the dodgey table i tried...ok, finally think ive got it!! thankss. I also got for the next 3 : 1.7, 18.8, 1.7
if anyone can be bothered checking lol x
moreResolved Question: We had low voltage on one leg 120 on the other. After replacing the meter our troubles stopped.?
All of our appliances got zapped while we were having low voltage on one side. Could the have been caused by a faulty meter?
moreResolved Question: Help required with wire sizing for 12v led light circuit?
I want to install a 12 volt LED light circuit in the eaves of my house. The LED units would be 2w each, with 18 spread over a total length of 70 metres. I know that, due to voltage drop, the cable size is critical but am not sure how to do the calculation as the power demand is at varying distances from the power source; a battery charged by a air driven generator. Thanks for any help.
moreResolved Question: Help required with wire sizing for 12v led light circuit?
I want to install a 12 volt LED light circuit in the eaves of my house. The LED units would be 2w each, with 18 spread over a total length of 70 metres. I know that, due to voltage drop, the cable size is critical but am not sure how to do the calculation as the power demand is at varying distances from the power source; a battery charged by a air driven generator. Thanks for any help.
moreResolved Question: please help me answer this?
An armature of an electric generator has a mean diameter of 40mm, wound with 4 metres of copper wire. If it is rotated at 3,000 rpm in a magnetic field of 1.2 Tesla Caculate the peak voltage generated.
any help with this would be very kind as i have look through all my resources at college and am stuck !!
moreResolved Question: Immersion heater problems?
My have an economy 7 water heater with 2 elements in the tank, and it is now not heating the water. I know that the problem is not with the top element because when I turn on the boost switch it gurgles into life, so I'm assuming its the bottom element, the "Economy 7" one. But how do I check which is faulty, ie is it the element or the thermostat rod? I wouldn't want to drain all the water only to find that it was only the blinkin thermostat!! I have a small test meter than can check continuity, voltage etc, will that help me? Many thanks.I know its not the clock because I can "Fast forward" and turn the dial on the clock to 5am and the power kicks in and I get 240v at the element. I shall try with the continuity and ohms tomorrow morning and let ya know who wins. Thanx again!Girli Electrics.. What do you mean by "Infinate" doesn't that mean no ending?? Is it a continuous sound I'm looking for when checking thermostat?
Beg my pardon for sounding daft!!(Continuous sound when checking ELEMENT, I meant in last paragragh!)
moreResolved Question: Electronics - questions about flux density's and generators?
An armature of an electric generator has a mean diameter of 40mm, wound with 4 metres of copper wire. If it is rotated at 3,000 rpm in a magnetic field of 1.2 Tesla Caculate the peak voltage generated.
any help with this would be very kind as i have look through all my resources at college and am stuck !!
moreResolved Question: Will usage of a battery with a higher voltage in my camera's exposure meter cause an incorrect reading?
Today I bought an old Praktica MTL5 SLR, a fully manual camera that has a built in CDS exposure meter. The PX625 battery inside is dead and needs replacing. However, there is a problem: the battery was originally designed with a voltage of 1.35 volts, but a recent ban on mercury in the European Union has forced a change in battery chemistry, and thus a change in voltage to 1.5 volts. Will this change in voltage cause an incorrect exposure? I'm not really sure what to do about this. There are actually a few old 1.35 volt batteries for sale at a much higher price which I would rather avoid, but I might have to take them into consideration if using this one would cause an incorrect meter reading.
http://cgi.ebay.co.uk/ws/eBayISAPI.dll?ViewItem&ssPageName=STRK:MEWAX:IT&item=260348489967
What do you think? Thank you for your help in advance.
moreResolved Question: do i need a low voltage fan?
hi
am redoing a bathroom and am installing a fan, its at a height of 2.4m and 1 meter away from the bath tub which has a shower at the same end as the fan will be mounted. and will have a shower screen between the shower head and the fan. i have looked at fans some are ip 44 is this ok or do i need to install a low voltage fan??
moreResolved Question: Can I test the charging system of a motorcycle with a basic multi-meter across the terminals of the battery?
And if so, what voltages should I be looking for at what engine speeds please?
moreResolved Question: internal PC switch voltage reading?
If i were to attach a voltage meter next to the internal ON/OFF switch (spst push to make), anyone have any idea what it would read??
Thanks(between pins 14 and 15)
moreResolved Question: Hi, I am trying to understand how the SAAB 93 (04) O2 sensor works in detail.?
Hi All,
I am trying to understand in some detail how the SAAB 93 O2 sensor works. Today I metered out the 4 wires at the O2 sensor connector in the engine. There were 4 wires (typical narrow band O2 sensor), 2 white wires a grey wire and a black wire.
I checked through the wires with a DVM and found that thye first white wire (pin1) gave me +14V, this eemed okay this is most probably the heater positive. Pin 3 (grey) gave me ground, pin 4 (Black) fluctuated but was always lower than 0V. The one that really confused me was pin 2 (White), this was 0v when the ignition was on (engine not running), it then climbed to between 2.8 - 3.1 volts but this was without acceleration. My understanding is that this is most probably the signal wire but I was kind of expecting it to rise as the engine accelerated.
I dont think the engine was in 'Open Loop' I.E there were no engine warning lights, therefore would think it was in standard 'Closed Loop', therefore would have expected the voltage on the signal wire to rise and fall inline with acceleration.
Does this mean that the O2 sensor is in fact not functioning or does SAAB do something I'm not expecting in terms of O2 functionality. It would look on the face of it like once the engine enters closed loop on this car it appears to ignore acceleration as far as the O2 sensor is concerned.Would anyone know why this is?
Any help would be appreciated.
Thanks,
John.Hi,
Thanks for the responses so far, couple of things though. a) my car only has one Lambda Sensor, I know some cars have 2 or even 4 but in these cases only 1 or 2 are used to regulate fuel to the engine. In some cars there are 2 Catalytic Converters and on these vehicles there are typically 1 or 2 sensors one regulates fuel and the other is used to monitor the Cat.
b) I know I can use an oscilloscope and I know that this would allow me to see the frequency as well as the amplitude of the signal. However I also know that you CAN use a volt-meter and that when you do you should see the signal amplitude (voltage level) rise and drop as the engine accelerates. I am confused as to why I cannot see this on the SAAB, I have seen it on other vehicles.
The reason for looking into this is so that I can add a piece of electronics that can take control of the signal from the Lambda sensor and then I can set the level (lean/rich) from this device. I am not currently seeing any faults.
moreResolved Question: my multimeter has stopped working?
it was working last time I picked it up, it has been sitting in the garage for a couple of weeks and now does nothing. Not even a simple battery voltage or a resistance check. I have tried it with a new battery.
This is an old-type meter with a moving needle and options for resistance ohms, and 3 ranges of voltage. I have taken the back off and it does not look broken or smell burnt or anything. What is the most likely problem?
moreResolved Question: Projector spec.............?
How good is this projector? And would it be suitable for watching television and playing xbox 360 on?
Brightness 1,800 Lumen
Contrast Ratio 1000:1
Resolution 800*600 supports 1024*768
Light 175W Golden Bittern Lamp
Lamp Life 8,000 hrs (New Technology)
Voltage 240 volts AC
Projection Distance 1.5 to 4 metres
Projection Size 45"-100"
Aspect Ratio 16:9 and 4:3 Switchable
Body Size 280mm x 230mm x 80mm
Interfaces Video Inputs: PC, TV, Video, Audio, S video, SCART
Output Video, Audio
Speaker 3W Stereo speakers
Controller 2 x Infrared Romote controllers
Other functions Keystone Correction, auto turn off, high-temperature alarm
Lens Manual Focus
moreResolved Question: Inductive Discharge Electronic Ignitions sytems for motor bikes, has anybody fitted one to a 4 cylinder bike.?
I have rebuilt a 1978. Suzuki 550 .G.S. motorcycle, which contains 2 ignition coils , which feed the four cylinders in its firing order.
Its distributor consists of Two sets of points.
The bike is a bit ruff at starting: and I have contemplated fitting a points assisted Electronic system to boost up the sparks in my Plugs.
I did think I was getting Voltage drop ; at first. but I have checked this with a volt-meter... and my supply to the plugs is reading 11 volts, however only two plugs are firing : as I checked them by substituting
4 separate spark plugs and earthing them, then cranked the engine over on the starter button.
I have at my disposal: 2 brand new Spark-rite 2000 systems, and a Boyer Bransden system, === both are Inductive discharge Ignition boosters.
Any comments would be graciously appreciated. by World Traveller.
aka white.whiskers@btinternet.comI write to Thank the 3 people who contributed with answeres : all of which combined made sense of my problem.
Each individual reply pointed me in the right direction. What I prepose to do now, is fit an Inductive Ignition module on either side of the bike, and take the live feed from the points box in the distributor section, from each set of points up to the module, then from module to each seperate coil, my assumtion is if I only fit one ignition unit only, the timing of the firing orders to the spark plugs will be out of syncronisation.
This is my next step of progression.
moreResolved Question: bluepoint multimeter where can i get it repaired?
meter on amps range tested for voltage should be fuses in meter cant find any xmas present darent ask them to send back through supplier regards braindead
moreVoting Question: 230V Mains Power Consumption ?
I have a weird things with my mains electricity. Last years utility bill came in at twice the usual amount. So I bought a kwh meter that plugs into the socket and set about some tests. I powered everything off using the circuit breakers on the consumer unit except the ground floor ring. I then powered all the sockets off using the individual switches – leaving just one power socket live. I plugged in a lamp and the utility meter read 0.180 kw (180W) . The plug-in kw meter registered 90W. – and yes it was set for 230VAC. I then wired in my FLUKE ammeter and got a reading of 0.4A and a voltage reading (RMS) of 230VAC, which = 230VAC x 0.4A = 92W. So I thought it was probably a faulty utility meter. However, I purchased a clamp on energy usage meter and attached the sensor to the live wire from the utility meter and it also read 180W (set to 230VAC). Still the plug-in power meter read 90W. Just to verify nothing else was plugged into the ring, I switched off the lamp and all meters read 0.0kw. When I switched the lamp back on the plug-in meter read 90W, the FLUKE read 92W and the utility meter 180W!!!
What’s going on?===
No not a tap. I've isolated the ring circuits and discounted this as a reason.
I've been trying to get the elec company out for a month now. They never return my call to arrange a time for a visit.========
Yes UK (230VAC).
The bulb is a 100W rated incadesent light. ALL other rings were disconnected via the consumer unit circuit breakers. No other power was being consumed as when I switched the 100W light off ALL meters read pretty much zero watts (in fact 0.2W). The plug in measures both kwh and kw. Again it reads about half the kw and kwh of the utility meter for the 100W bulb. I plugged in a 1KW heater and the meter read 1.9KW and the plug-in 1.05KW. I also attached a Wattson energy meter to the meter supply live cable (clamp on electric field sensor) and it also read 1.9KW - even though I only had a 1KW fire attached. When I switched the fire off, all meters read zero watts. Could it be a utility supply neutral fault, or neutral / live reversed in one of the rings?
moreResolved Question: please help me with my electical question on cable sizing etc?
a 230v 6kw load is supplied via a bs1361 fuse using single core 70 degree Celsius pvc cables in conduit over 20 metres ambient temperature 35 degree Celsius, please determine
a, design current
b, minimum fuse rating
c, current fuse value
d, minimum cable size
e, minimum cable rating
f, cable voltage drop
thanks a lot for your help, i really need it
moreResolved Question: What should the telephone line voltage be with the BT Master Socket fitted?
I have no dial tone and a noisy line at the extensions but the phone works at the master socket, suggesting that the problem is with the extension wiring. Been through all the fault finding things of unplugging everything. The previous owners of the house had the master socket moved at some point so it happens that the incoming line and the internal extensions are all wired through the same junction box, which then goes to/from the master socket, so I've been able to put a meter across the terminals on the incoming line.
I've noticed that the voltage without the faceplate on the master socket is 50V (which, I think, is what you'd expect). However, with the face plate fitted the voltage drops to 20V. Does anyone know if this is correct? I thought it might have been because of a fault on the extension wiring but it's the same without the extensions being connected.
I'm now wondering if it's the faceplate that might be faulty as, when I reattach it, everything seems to work OK for about 5 minutes before the problem occurs with the extensions again.
moreVoting Question: Car washer bottle motor - not working?
How would i test it witha mutli meter to see if its the motor or the switch thats got the fault? I've got voltage (which switches) at the plug that attahces to the motor so I'm presuming that its the motor at fault. When i check for continuity between terminals of motor ( unplugged from car) it beeps indicating closed circuit. Is this correct? Its a Peugeot 405 if that helps.
moreResolved Question: How long can 9 volts protect on an electric fence?
I'm keeping horses in behind an electric fence withe a 9 volt battery. How many meters can this stretch be without the voltage getting too weak?Power output is a 9 volt battery!!Thanks Alan and Barry. I haven't paced the distance but I think 150 maybe 200 meters long. I just haven't the courage to touch the wire to see if it is still strong enough. probably have it too long????
moreResolved Question: how do you calibrate a fluke 177 multimeter ? ....?
it just has a reset type button on the back, i am assuming we use a known voltage etc, and set the meter. Does anyone have or know where i can obtain the calibration procedure ?it just has a reset type button on the back, i am assuming we use a known voltage etc, and set the meter. Does anyone have or know where i can obtain the calibration procedure ? ..... no need for the obvious stupid answers,........ Rod, your village called, their idiot is missing...... give them a call they're concerned
moreResolved Question: Electrical suge or continual too much power?
Since we moved into our house 12 months ago we are blowing at least 1 light bulb per week as well as other electrical items such as Laptops, computers, microwave etc.
We have a trip switch which goes off lots. And a new light bulb in our bedroom, the energy saving ones that when you turn it off still flashes for 5 minutes on and off. We had a new kitchen 6 months ago and fitted 6 halogen lights in our kitchen. Mainly as we were informed the bulbs last longer. We have already changed each one at least twice and now two more have blown. Last week, the lights attached to my cooker hood in the kitchen blew with such force my husband came rushing in to see what the explosion was.
The national grid man came to check and told us we were receiving 250 - 247 volts. Which is high but not too high. We are currently awaiting results from the voltage meter they installed for a week.
Is it normal to get 250 volts? We are using over 20 units a day. 3 bed detached house. My bills are huge. I
moreResolved Question: using solar power indoors? colder, darker or a faster spinning meter?
I was testing the voltage of a solar panel indoors under electic light (no daylight)and, obviously power was being generated. The question I have is (assuming a grand scale) was the room, as a result of energy being transferred via the solar panel to a battery, becoming (a) darker as the light was being absorbed to "make" electricty (b)colder - energy transferred as heat or (c) would the lightbulb draw more power and my electric meter spin faster and cost memore money?
So, if they're planning to generate electricty on a grand scale in the deserts will we be experiencing global cooling as a result??
If light is absorbed and transferred to electricy and sent to europe then it wont be as hot in the desert and it will cool down? maybe. Newton said that you couldn't make energy, only transfer it. When i was at school therewas an expression used in science - "harmless carbon dioxide and water" - discuss.
Would appreciate a few theories on the darker room thoughts. thanks chapsforgot to mention that the battery being charged was out of the room; so presumably energy must be leaving the room.?
The light bulb extra drain issue was a red herring.
There was a serious report on solar electricity generation proposals using the sahara in the daily telegraph last week.
moreResolved Question: Is voltage and magnetic flux density somehow related?
I have an equation where V = m s^-1 T
where V is Voltage, m is metres, s is seconds, and T is Tesla.
Is it right or have I made a mistake?
Thanks
moreResolved Question: Scart cables on TV's & DVD's carrying a voltage?
The other day I was bleeding air from my radiators. In front of one of my radiators sits a TV, DVD etc. As I turned the valve key on the radiator my arm happened to brush against the back of the DVD player and I got a slight tingle up my arm.
When my husband, who is an electrician came home I asked him to test this with his meters. Sure enough there was a voltage of 110V and a current of 0.1 amps being carried between the DVD and the radiator.
Husband then went into detective mode and discovered that this only happened when the scart cables were connected between the DVD and TV.
Thinking of a possible fault with that particular DVD player he then went round the house checking the other three sets and sure enough all were the same.
All radiators are earthed and there is continuity in the all the earth so this has got us all baffled.
Not often husband is stumped with an electrical problem but this time he is.
Does anyone have any idea of the cause?
moreResolved Question: Scart cables on TV's & DVD's carrying a voltage?
The other day I was bleeding air from my radiators. In front of one of my radiators sits a TV, DVD etc. As I turned the valve key on the radiator my arm happened to brush against the back of the DVD player and I got a slight tingle up my arm.
When my husband, who is an electrician came home I asked him to test this with his meters. Sure enough there was a voltage of 110V and a current of 0.1 amps being carried between the DVD and the radiator.
Husband then went into detective mode and discovered that this only happened when the scart cables were connected between the DVD and TV.
Thinking of a possible fault with that particular DVD player he then went round the house checking the other three sets and sure enough all were the same.
All radiators are earthed and there is continuity in the all the earth so this has got us all baffled.
Not often husband is stumped with an electrical problem but this time he is.
Does anyone have any idea of the cause?
moreResolved Question: power caps? subs and amps?
hi, im running a mono 1000w fli amp powering a single 1000w fli sub, also another amp a fli 4ch 400w amp powering the 6x9's and the front speakers. its all fine on punchy music but when theres deep bass it looses power, some one has reomened a power cap as they tested the voltage with a meter and it looses voltage on the deep sounds.
what i want to know is, can two amps be connected to one cap or will i need two (one for each amp)? thanks ben.
moreResolved Question: I am having problems with my outdoor decking lights. The lights keep tripping when I switch them on??
The decking lights (2 sets - low voltage with transformers) are connected to an outdoor strip socket in weatherproofing box. There is approx. 6 metres of cable from the strip socket to the socket indoors. The lights continue to trip each time I switch them on. However, if I plug the transformers into an extension plug they work no problem. Unfortunately, this is too bulky for the weatherproofing box. Could this be a problem with the strip socket or the 6 metre wiring??
moreResolved Question: Voltage drop?
A 6kw oven is supplied using 20 metres of cable with a resistance of 0.01 ohms per metre, from a 240 v supply.What is the volt drop in the cable when supplying this load, and loss of power in the cable that results. Help, i should know this, but my answer(s) seem way off target.
moreResolved Question: electric showers?
Having purchased a 8.5 kwt shower, i noted that its only an 8.5kwt if the current is 240volts, if the current is 230volts the shower becomes 7.8kwt, as the current voltage as been standardised to 230 volts, and at the most we can hope to get is 224volts, this would make the shower a 7kwt ...This is blatent misselling by the companys that make these showers..
On speaking to one of the manufacturers i was told that if i wanted a 8.5 kwt shower to buy a 9.5 kwt shower..Should they be allowed to quote voltage thats not attainable ie 240-250 volts...BIt like carpet shops mark the price in sqare yards but only sell in quare metres.. Time we made a stance...
moreResolved Question: What size resistors do I use for 110 lighting?
I am making a large VU meter ran off of a high voltage color organ and in order to make the display move I need to put resistors between the lights, what size risistors are recomended?
moreResolved Question: How can I install sockets in my shed?
SORRY if this is posted three times... I have been having internet problems, causing everything to be triplicated.
I want up to three 2-gang sockets in my shed, mainly to run a fountain pump, outdoor lights (few hours per day), plus occasional use of lawn mower, hedge trimmer, etc.
The shed is like a brick extension to the house, and it appears possible to run cables under the floorboards (house is elevated) out into the shed without them going outside (had been done previously, but stripped away).
Would I be able to have these sockets added by extending my downstairs ring circuit, using 2.5sqmm twin-core and earth cable? Would there be any problem (e.g. voltage drop) due to long length of wire between sockets - at most, the cluster of sockets would be 6-8 metres from the neighbouring sockets on the ring (back in the kitchen), and can this be got round? If this plan is not feasible, can you suggest a suitable alternative arrangement?
moreResolved Question: What are the spiral coils that I saw on national grid cables for? It must be to do with discharge protection?
These coild were approx 25cm long, and the diameter at the "wide" end was perhaps 7cm or so. The coil seemed fixed at the narrow end to the grid cable. The cables in question were lower voltage than national grid - they were part of the grid over Rye Harbour Nature reserve, and only several metres above ground.
moreResolved Question: Immersion Heater question for a plumber?
My water is heated via a hot water tank with an immersion heater going into the bottom of the tank, it is fed by a cold water tank from above. It has one cold water going in, one hot coming out and another hot going up to the cold water tank. It is on a fused power supply with a timer. The water has stopped heating up and i have done a process of elimination starting with the timer. Using my voltage meter there is current going through the timer, however the timer itself does not work so i clicked it onto constant, the heater starts to heat up, you can hear the hissing in the tank but then after about 1 minute it dies. So i checked the thermostat, this working and there is current going to the heater. Now i have the dilemma of the element, before i change the element, i know i have to drain the system down, remove the element etc. but would it be worth replacing the flex to see if this is the problem? I wish to do this myself without calling a plumber outIs it true i should 'crack' the nut with the tank full before draining it just wait untill it is empty?
moreResolved Question: How do i work out what size arnoured cable/fuse/tails rating to use?
I am running armoured cable from main outlet to a second consumer via a switched fuse (via tails). The run is 12 metres and the consumer unit houses 8 mcb (total of 200 Amps). I want to make sure there is no voltage drop. I am running a lot a audio equipment/lights/air con/amplifiers etc.
moreResolved Question: building a pc question!?
i am buiding(well sort of repairing) a amd(socket a) mobo,256mb ram,40gb hdd,ect and i have a damaged psu
could i replace the faulty psu(180 watts)for the replacement (200watts)
the replacement psu is out of a compaq deskpro 233mhz pentium 2 and i want to put it into the socket a mobo,is it safe,as its 20watts over and what will happen if it isnt compatible,will it just not boot?
i have other psu,s but they are the old type with 2 identical clips,theyre crap
also can you test a mobo with a voltage meter or something similar to see if it is functioning ok,or is there a tool you can buy for such a job
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