Need to find alternatives to this non-existent capacitor!

mvs sarma said:

I meant same and surely not the post bridge filter. It is noise generated while the diode trasnsits around 0.65V either in raising or trailing mode. ( forgot the name for this-- ringing noise or some such thing . t is surely double the mains frequency.
A momentary tart of conduction , i suppose makes up a small spike like.
During 60s attending transistorised radio receivers, working from in built power supplies,
the 100Hz hum was disturbing even on shotwave bands and once these parallel caps are placed across diodes, it just disappears.

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