Hi gang, I have been playing around with several different types of voltage regulators. This was inspired while re-capping a Sherwood S8000 FM + 30 watts / channel stereo amplifier. Check out the following link:
http://pages.prodigy.net/jcandela/Sherwood_S8000/HV_REG/regulator.htm If the link gets truncated with a carriage return, just manually enter the last few characters. PS Some of this circuitry can be applied to AM radios...just to stay on topic. Go ahead and call me crazy for running a dc fan at high common mode voltage, and putting 450 volts to a header plugged into a ic socket. It would just confirm what I already know! Regards, Jim Candela WD5JKO