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Original Message
RE: Full wave bridge into Choke PS
Posted by Eli Duttman on March 27, 2017 at 10:10:40:
"I parallel every diode with a 0.01u disc cap and 470K resistor (values not critical)."
A very reasonable action, when most PN junction diodes are employed. FREDs can exhibit "funny" behavior, when snubbed. Snubbing diodes is unnecessary, when they are Schottkys.
The single snubber I mentioned is specifically for choke I/P filters associated with SS diodes. Without the cap. or MOV, inductive kick back spikes can destroy SS diodes. The situation is 1 where the electrical fragility of SS is illustrated.
Tubes are mechanically fragile and electrically robust. SS parts are mechanically robust and electrically fragile.