i agree, it's ALWAYS dangerous if not properly insulated from the user.
You could be surprise to look at some TV schematic...no coincidence why the user button are as this far of the front plate and have those plastic shaft in between.
If you know what you do, if you install enough protection, if you screen the user from any potential risk, life is good.
You don't want to reverse engineer most programmable thermostat, cofee maker, etc etc...
Advanced components industries, do some nice small transformer.
http://www.advancedcomponents.com/go...FQy8QAodBl8-OA
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