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RE: GZ34: getting too much voltage drop

Posted by vetmedrobert@gmail.com on February 11, 2017 at 07:33:11:
You have 670 volts into a choke. the formula is VAC*0.45, or 670*0.45= 302.5 volts. This for a full wave rectifier as you have in your schematic. Then you must allow for the rectifier voltage drop which depends upon your circuit's current draw. To me 290 volts seems if anything a little high but perhaps your wall voltage is a bit higher than what the power transformer is rated for. Hope this is useful.