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Re: Series DC Blocking cap.


 

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Published current ratings and actual cap ratings may or may not co exist.? But the fact remains an application may require a cap with an appropriate capacitor current capability.? I have a Johnson Valiant as an example.? It had two banks of series silver mica capacitors in parallel.? (Factory)? One day it gave up the ghost and I replaced it with just two in series.? Big mistake.? It blew up.? That was the day I learned about capacitor current ratings and why Johnson had 4 of them in there instead of one.

Lee, w0vt?

On 6/28/2019 9:49 AM, jim.thom@... [ham_amplifiers] wrote:

?

LEIGH, When was the last time you ever saw a NPO? ?.01uf? DISC CERAMIC? ????? ? They don't exist, never did.? ?They are typ? Z5u, z5t? etc.?


I have never seen RF? current ratings for? disc ceramics,? ?rf current ratings? vs? freq,? nor? ESR at a freq.??

Jim? ?VE7RF

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