Thursday, 24 October 2019

how can i increase the output current in a transformerless power supply?


I am designing a 12VDC, 200mA transformerless power supply using 1N4007(diode) for rectification, a ceramic capacitor 475k and 10R resistor for limiting, a zener diode (1N4742A) for a regulated output. After the connections am not still getting the output current, the current is needed to drive a relay of 12VDC 160mA.




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