This little hack works quite well as a electrophoresis power supply:
http://www.science-projects.com/PowerSupply.htm
Essentially, it's just a 110V dimmer switch from a hardware store, plus a rectifier. Add a 1:1 transformer to be just a little less horribly unsafe, and voltage and mA readouts, and you'd have a pretty functional DIY power supply.
Of course, you'll never be able to produce anything higher than 110V DC this way (220V in Europe), but I managed to pick up some 2:1 travel mains voltage converters for a few bucks each, which I should be able to turn around to produce up to 220V DC from the 110V AC US mains voltage.
On Saturday, December 8, 2012 7:56:49 PM UTC-8, Nathan McCorkle wrote:
--John, it looks like the best power supply would be something like this AC to DC converter which (with a 1:1 transformer for mains isolation)or a boost converter (but I'm not sure how to vary it):How would you increase the max current to a bit more, in case 100mA isn't enough? (for the first link)On Sat, Dec 8, 2012 at 7:38 PM, John Griessen <jo...@industromatic.com> wrote:
d suggests a combo power supply and meter
to hook up to your gel trays. That would defeat s--
-Nathan
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