I'd like to learn about the basics of 12v electrics. I'm looking for recommendations for books, videos, websites, etc. [more inside]
posted by Solomon
on Nov 2, 2013 -
How can I be sure that I didn't get ripped off with a replacement laptop battery with regards to number of cells, voltages and mAh ratings? [more inside]
posted by daHIFI
on Oct 12, 2011 -
Need a step-down converter for plugging a printer sold in the US (110V power) into a 3rd-world socket (240V power). I get the voltage part but watts and amps and such are a bit beyond my electronoobicity. [more inside]
posted by allkindsoftime
on Jul 27, 2011 -
Will I blow up my PA system? A question of ohms, watts, speakers, amps and the love affair that almost tore them all apart. [more inside]
posted by otolith
on Mar 13, 2010 -
How can I identify the approximate properties of an electrical transformer? [more inside]
posted by anadem
on Feb 22, 2010 -
Can I damage my laptop by using a power adapter that has a slightly higher wattage than the original adapter? The original adapter was 65W, and the aftermarket one is 70W. The voltage is switchable. My original adapter had a voltage of 18.5V, this one says that if I need 18.5V, I should choose 18V.
Any chance of damaging the computer by using this one? [more inside]
posted by leticia
on Nov 13, 2008 -
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 -