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How can the energy cost of an electronic device over a span of time be calculated?

How can the energy cost of an electronic device over a span of time be calculated?
posted by airguitar on Feb 21, 2006 - 6 answers

Have Cat... Will generate electricity for food...

Cat Filter - In the winter the static electricity gets in the way of the cat & my... well... lets just say personal time. Any advice? [more inside]
posted by meta x zen on Feb 16, 2006 - 19 answers

Learning about electricity, the bright and colorful but not completely dumbed-down way?

I'm looking for a book that teaches electricity well. The Mims book definitely doesn't cut it - I want something more along the lines of "The Way Things Work" in clarity and accessibility, but I still want it to actually teach the underlying math; i.e., I want it to show me the material in pictures and equations. [more inside]
posted by dmd on Feb 11, 2006 - 10 answers

Electric Shock Made My Computer Restart

I was typing on my laptop and my husband touched my face. His hand gave me a shock, and then my computer restarted itself. [more inside]
posted by JuliaKM on Feb 7, 2006 - 9 answers

Unsealed fridge contributing to high electricity bill?

How much electricity is wasted from a fridge that isn't sealed properly? [more inside]
posted by Jase_B on Jan 29, 2006 - 10 answers

I need an adaptor but am an electricity ignoramus

I can sequence DNA, but when it comes to electricity, I can't tell my AC from my DC. Help me. [more inside]
posted by docgonzo on Jan 10, 2006 - 7 answers

Grounding appliances in a 2-prong apartment?

Grounding my old Marantz stereo amp in a two-prong outlet? (We're talking American 110v.) [more inside]
posted by electric_counterpoint on Jan 5, 2006 - 8 answers

How do I judge the electrical system in an apartment?

How do I judge the electrical system in an apartment? [more inside]
posted by Caviar on Dec 27, 2005 - 13 answers

power strips with individual on/off strips?

Can you buy power strips in the US that have separate on/off switches for each socket? [more inside]
posted by holgate on Dec 22, 2005 - 15 answers


Why is electricity so much more expensive then natural gas? Am I reading my bill wrong, or is it really an order of magnitude cheaper? [more inside]
posted by delmoi on Nov 30, 2005 - 18 answers

One solution for exercise and powering the home?

I'd like to help power the house and exercise, both solved with one solution, and need some suggestions. [more inside]
posted by vanoakenfold on Nov 21, 2005 - 21 answers

nirvana unplugged.

I love my lotus lamp. I hate the cord. Is it possible to convert into a little battery-powered beacon of enlightenment? [more inside]
posted by digifox on Nov 8, 2005 - 5 answers

running a 240V device on 110V

Will a 240 VAC panini grill work on 110 VAC? [more inside]
posted by randomstriker on Oct 30, 2005 - 15 answers

Was Edison's original light bulb really designed to never run out?

Was Edison's original light bulb really designed to never run out? [more inside]
posted by sjvilla79 on Oct 29, 2005 - 14 answers

If the bulb is out, or empty, but the switch is on, are you still paying for power?

If the bulb is out, or empty, but the switch is on, are you still paying for power?
posted by airguitar on Oct 1, 2005 - 17 answers

What is (+,−)?

What does (+,−) mean? [more inside]
posted by Count Ziggurat on Sep 18, 2005 - 10 answers

light bulb blowout

How do I fix a light fixture which causes a bulb to blow out, but only after a month or so? [more inside]
posted by mono blanco on Aug 25, 2005 - 6 answers

What are some good resources to learn about basic electricity?

What are some good resources to learn about basic electricity? [more inside]
posted by frenetic on Aug 11, 2005 - 13 answers

Electrical arc photo identification needed.

Please help me find this great picture of electrical arcs. I saw this photo a while back. I'm pretty sure it was in a magazine. It was of a great big round room, with some sort of large apparatus, like a collider or something (it wasn't a collider I don't think). There were scaffolding and cat walks running everywhere. Lots of pipes and fittings. Everything was gold or copper or something. And the entire room is covered in arcs of electricity. Great big bolts running all around the room, with smaller and smaller branches and fingers breaking off to fill up every metal surface area with arcs. It was some sort of electrical discharge as a result of the experiment that was being run. I can't remember what it was, so I don't even know what to look for in Google. Any help would be appreciated. Even just a guess as to what the device was that would produce that, so I have a starting point to try and find it. Thanks.
posted by gummo on Aug 1, 2005 - 12 answers

How can I keep lightning from destroying my stuff?

I'm losing a lot of electronic gadgets to lightning strikes. What are the best ways to prevent further damage? [more inside]
posted by junkbox on Jul 26, 2005 - 18 answers

Here comes the sun: tell me about solar electricity

SolarPowerFilter: My wife and I love the idea of solar power and would love to compliment our current electrical consumption with some tasty renewable energy, but where do we start? [more inside]
posted by bjork24 on Jul 22, 2005 - 13 answers

How much does it cost to wash?

How much does it cost (or what is the amount of electricity / volume of water used) to do one full load of laundry, as an average. Or, how would I go about getting precise figures for this? I want to know how much too much we pay to operate the pay-per-load laundry machines in our new apartment building.
posted by ChrisR on Jul 16, 2005 - 5 answers

Getting shocked while ungrounded

Why is it that if I walk up and stick my finger in a wall outlet, I'll get shocked even though I'm not grounded? I can see getting shocked when standing barefoot on wet ground, but come on... on a floor wearing tennis shoes? How does that work?
posted by rolypolyman on Jul 10, 2005 - 20 answers

My wiring frightens and confuses me

My boyfriend and I live in a flat built in the '20s. We have reason to suspect that the outlets provide inconsistent amount of electrical current. Is there something we need to get for our computers to protect them? [more inside]
posted by FortyT-wo on Jul 7, 2005 - 16 answers

efficiency and power consumption of computers

I have two computers, each with something like 350W power supplies. By keeping them on 24/7, am I consuming the equivalent of seven 100-watt light bulbs around the clock? What can I do (either software or hardware) to make my machines more power-efficient? Also - while I'm on the subject - does an incandescent bulb consume less when it's on a dimmer and that dimmer is turned down? [more inside]
posted by scarabic on Jul 7, 2005 - 18 answers

A power station in my backyard?

Living near power lines? Searching for a home, my girlfriend and I have found a house we want to make an offer on. It's our dream house in a nice town, but there's an issue... the house sits about 100 yards away from this... a relatively small power distribution/transfer station adjacent to the property. Do we have anything to be concerned about or should I go buy some lead boxer shorts? [more inside]
posted by evoo on Jul 1, 2005 - 21 answers


Just a stupid question that's puzzled me for years: Why is it that, on electric fans, the order of the settings on the switch is OFF - HI - MED - LO? I'm sure there's an electrical reason for this, but I don't know what it is, since I know nothing about circuitry. One would think that OFF - LO - MED - HI would make more sense. Can someone explain this to me?
posted by Dr. Wu on Jun 14, 2005 - 23 answers

Will I burn down my apartment?

I just replaced a burned out bulb in my overhead kitchen fixture. The bulb that burned out was a 60 watter. I only had a 100 watter on hand. I know I'm hastening fossil fuel depletion, but am I also causing a fire risk? What about ignoring the wattage recomendations in favor of higher watts in table lamps?
posted by incessant on May 26, 2005 - 16 answers

Electricity bill doubled

Is my water cooler doubling my electricity bill? [more inside]
posted by toftk on May 19, 2005 - 16 answers

How to undo central light switch setup?

In my new apartment, the outlet I have to use for my computer system is hooked up to a lightswitch that also controls the room's lights. Any good ideas on how to undo this situation? [more inside]
posted by edlundart on Apr 28, 2005 - 16 answers

AC power

If I have AC power at 50Hz, does it mean my lightbulb is flickering 100 times a second and I just can't see it? Is this why, when passing a street light in a speeding train, it can appear as a series of dots in your vision?
posted by Pretty_Generic on Apr 16, 2005 - 11 answers

What's causing my lights to pulse?

The lights in my house occasionally pulse--that is, they'll rapidly get noticeably dimmer and brighter numerous times within a matter of just a few seconds. I'd say "flicker," but they never seem to actually go completely dark. Does this indicate faulty wiring, or something else? [more inside]
posted by kimota on Mar 11, 2005 - 11 answers

My X10 switches are flaky

I have a number of X10 switches controlling lights throughout my apartment. I have a number of problems with them... [more inside]
posted by Caviar on Feb 22, 2005 - 9 answers

POP! smoke....

Electricityfilter: standard grounded outlet works fine with a lamp, radio, etc., but I plugged a Belkin surge protector into the outlet and it popped the circuit breaker. [more inside]
posted by badger_flammable on Feb 17, 2005 - 19 answers

Managing Utilities

Multi-unit property, single utility meter. Unit size/occupancy varies widely, and so does the monthly bill. What's a fair (to both parties) way to bill tenants for utilities since their actual usage cannot be determined?
posted by nakedcodemonkey on Jan 14, 2005 - 19 answers

Disadvantages of using a 220V converter for 110V electronics?

Voltage query: What are the disadvantages of regularly using electronics made for 110V using a step down voltage transformer in a 220V - 240V country?
posted by riffola on Jan 11, 2005 - 14 answers

Safe Christmas illumination

How many strands of Christmas tree lights (100 lights/strand) can I safely plug into a single outlet and/or connect to each other?
posted by Dr. Zira on Dec 17, 2004 - 12 answers

Need either 240V only or bicurious with 110V CD Clock Radio in NYC or online.

Global citizen looking for either 240V only or bicurious with 110V CD Clock Radio in NYC or via online sites. O' Wise Ask MeFi, where do I find the perfect alarm clock to wake up with when in Bombay? I'm not yet desperate enough to make exceptions for 110V clocks in drag using a voltage convertor. [more inside]
posted by riffola on Dec 8, 2004 - 5 answers

Wiring a Dishwasher

Electricity: I'm wiring up a new dishwasher with the power cord from the old dishwasher. Just to make things interesting, the power cord has absolutely no indication of which side is positive and which side is negative. Is this because it's AC and it doesn't matter? I'm in the US on 110.
posted by yerfatma on Dec 6, 2004 - 14 answers

Wonky Electricity

I'm sitting in my living room watch my dining room light turn on and off, dim and brighten, turn off again, then turn on. I know the house isn't haunted, but what is happening to my light? Should I be worried? [MI] [more inside]
posted by pwb503 on Dec 2, 2004 - 12 answers

I need a UK to US transformer for a rechargeable drill.

TransformerFilter: I've just relocated to the US and have a rechargeable drill that uses a 17V DC transformer. I need to replace the transformer, since the one I have runs on 240V power (and has the UK prongs). The problem here is that I can't find a suitable replacement at the likely suspect places: hardware stores, Radio Shack...

I know that the voltage must match precisely and that the amperage must be at least as high as the noted amperage, and that the polarity must also match. So where can I go to find a good transformer? I'm in NYC, but I prefer to shop online.
posted by yellowcandy on Nov 28, 2004 - 9 answers

How does mains frequency relate to computer clock speed, or does it?

Electricity and computers. 3 questions about:
1] Mains frequency
2] Computer clock speed
3] Putting 1 and 2 together. [~240v inside] [more inside]
posted by twine42 on Nov 23, 2004 - 9 answers

good, small, inexpensive, energy-efficient space heater?

What is a good, small, inexpensive, energy-efficient space heater? Living in a leaky old house, we're starting to dread the approach of our first winter here. All we have is one crappy gas wall heater, this electricity-sucking system on the roof that pumps down solar-heated air, and a fireplace in the bedroom. We need more. (We're already going to seal the windows with plastic where we can.)
posted by gottabefunky on Sep 23, 2004 - 8 answers

How can I plug lots of blocky power cords into fewer surge protectors?

Looking for very short extension cords. [mi] [more inside]
posted by boaz on Sep 16, 2004 - 7 answers

Learning Electronics

I've devised what I believe to be a simple project for myself to help me learn some basic electronics skills. however, being an absolute neophyte, I know not where to begin. [perhaps there is more inside?] [more inside]
posted by mcsweetie on Sep 16, 2004 - 15 answers

What's wrong with my truck's power inverter?

I have a Vector MAXXsst 225 Watt DC to AC power inverter that I run in my truck. Problem is, it keeps blowing the truck fuses... It's gotta be a short, right? What am I missing?
posted by ajpresto on Sep 11, 2004 - 5 answers

Ceiling: Black/White/Red Wires. Chandelier: Brown/Ground Wire. How Do I Connect the Two?

She looked at her dining room, and saw that it was without light, so she said, "Let there be light." This had no effect, so she went to Home Depot and bought a chandelier, because she saw that it was good. Then she came home, took out the fuse, took down the old ceiling fan, and began to assemble the chandelier. Then she ran into problems, got frustrated, dropped the third person, and asked MeFites:

How should I connect a light fixture when there are black, white, and red wires in the ceiling and the chandelier has two spliced-together brown ones and a ground wire?
posted by orange swan on Aug 22, 2004 - 17 answers

Why is wireless electric current not possible?

If we can have wireless voice communication and wireless data transfer, why can't we have wireless electric current?
posted by PrinceValium on Aug 8, 2004 - 16 answers

Where to look in apartment building for a mystery circuit breaker

I want to replace the horrid ceiling light fixture in my office. Step 1 is to turn off the appropriate breaker, but...duh...I can't find it. [more inside] [more inside]
posted by gottabefunky on Jul 15, 2004 - 9 answers

International Voltage Adapters

International Voltage adapters... [more inside]
posted by lkc on Jul 6, 2004 - 5 answers

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