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when toggle format what by license comment
May 12, 2014 at 10:21 comment added Kamil Someone downvoted this, but I think thats best way to do it. Phone chargers are very cheap and relatively safe. "Simplest supply" based on capacitor, without any insulation between mains and circuit is very dangerous.
Feb 11, 2014 at 4:55 review Low quality posts
Feb 11, 2014 at 5:15
Feb 11, 2014 at 4:37 history answered Eric Gunnerson CC BY-SA 3.0