Nov 20, 2011 #1 abdulwahababid Member level 3 Joined Nov 20, 2011 Messages 65 Helped 7 Reputation 14 Reaction score 7 Trophy points 1,288 Location Pakistan Activity points 1,633 looking for 220ac to 5v dc,1200mA transformerless circuit Kindly help for my design. Last edited: Nov 21, 2011
Nov 20, 2011 #2 E engineerpervez1 Member level 5 Joined Dec 26, 2010 Messages 84 Helped 15 Reputation 30 Reaction score 14 Trophy points 1,288 Location Lahore Pakistan Activity points 1,841 you find any good mobile charger normally it gives 5 V. If luckily uses IC TL431 you can change the bising resister and get 3 volt, but it is very important what is your required current.
you find any good mobile charger normally it gives 5 V. If luckily uses IC TL431 you can change the bising resister and get 3 volt, but it is very important what is your required current.
Nov 20, 2011 #3 ashokok Member level 4 Joined Jan 1, 2008 Messages 73 Helped 22 Reputation 44 Reaction score 16 Trophy points 1,288 Location INDIA Activity points 1,603 Check this application note https://ww1.microchip.com/downloads/en/AppNotes/00954A.pdf these circuits use dangerous High Voltage AC/mains. P.Ashok Kumar
Check this application note https://ww1.microchip.com/downloads/en/AppNotes/00954A.pdf these circuits use dangerous High Voltage AC/mains. P.Ashok Kumar
Nov 20, 2011 #4 thannara123 Advanced Member level 5 Joined Jan 7, 2010 Messages 1,581 Helped 122 Reputation 244 Reaction score 114 Trophy points 1,353 Location Usa Activity points 10,396 3v and how much current (Ampere ) ?