Dec 18, 2013 #1 K Khurram1965 Newbie level 4 Joined May 26, 2012 Messages 7 Helped 0 Reputation 0 Reaction score 0 Trophy points 1,281 Activity points 1,342 how can I get 12V (30 ma) dc from 400V dc
Dec 18, 2013 #2 I Ice-Tea Full Member level 2 Joined Jan 1, 2005 Messages 145 Helped 27 Reputation 58 Reaction score 26 Trophy points 1,308 Location Belgium Activity points 874 Buck, Flyback. Have a look at the Power Integrations website for a selection.
Dec 18, 2013 #3 udhay_cit Full Member level 6 Joined May 16, 2008 Messages 346 Helped 37 Reputation 74 Reaction score 37 Trophy points 1,318 Activity points 3,895 If efficiency is not a problem... simple potential divider is enough...otherwise use a 12v smps. The SMPS should be rated for 290V AC input.
If efficiency is not a problem... simple potential divider is enough...otherwise use a 12v smps. The SMPS should be rated for 290V AC input.
Dec 18, 2013 #4 I Ice-Tea Full Member level 2 Joined Jan 1, 2005 Messages 145 Helped 27 Reputation 58 Reaction score 26 Trophy points 1,308 Location Belgium Activity points 874 udhay_cit said: If efficiency is not a problem... simple potential divider is enough Click to expand... Erh, that's 12W. And a resistor devider has some minor issues with varying loads...
udhay_cit said: If efficiency is not a problem... simple potential divider is enough Click to expand... Erh, that's 12W. And a resistor devider has some minor issues with varying loads...