Quote:
Originally Posted by ms660
I might be miles out but according to what I can figure out, Rs (resistance in series with the silicon rectifier) for your original set up (226 VAC, 210 VDC out at 40mA) is approx. 504 Ohms, and with your set up with the large transformer (226 VAC, 280 VDC out at 50mA) Rs is approx. 94 Ohms.
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I can't do calculations but fiddling around with some component values in PSU designer to give
mean voltage and current gives series resistances of 480 Ohms and 75 Ohms so in same ballpark.
Ripple about 20-30 Volts p-p.
http://www.duncanamps.com/psud2/