[ARC5] Solid State --- diodes...

[Kenneth G. Gordon]

I haven't seen the following issue mentioned yet, but I do remember that when using Si 
diodes in a power supply in a receiver, there appeared significant noise, i.e. RFI, from them.

A constant sort of hissing or static-like interference.

The way I cured this at the time was by including a 0.01 mfd bypass capactor across each 
series-connected diode, and another from each end of a bridge to ground.

At the time, I attributed this RFI to the abrupt cut-off of conduction by the diode as compared 
to the slower one of a tube when the sine-wave reversed, but that was most probably wrong.

Now this was a long time ago, and I haven't looked for such a thing lately, but I can't see 
that bypassing each diode with a good disk-ceramic would hurt anything.

Comments?

Ken W7EKB

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