"Be careful if you fix this. It's not tuned to *exactly* 120 Hz because that
would cause a
very high voltage to appear across the choke. Use the specified values if
you replace
anything."
I strongly believe the above is a perpetuated old hams' tale, totally
untrue. The parallel-tuned circuit is a frequency-rejection filter,
exhibiting a very high Z to the 120 Hz ripple, thus preventing high
circulating current and its resultant voltage build up. Read the article,
noting the careful tuning to exactly the 120 Hz resonant frequency:
http://www.qsl.net/i0jx/supply.html
73, Roy K6XK
_______________________________________________
Amps mailing list
Amps@contesting.com
http://lists.contesting.com/mailman/listinfo/amps
|