[AMPS] Capacitor series resonance

[Mark S Graalman]

  One thing I was never quite sure of, are the lead lengths listed
as "total" or individual?

Mark  WB8JKR


On Thu, 04 Nov 1999 07:56:56 +0100 "Hans Goldschmidt" <sm5ki@algonet.se>
writes:
>
>
>----------
>If we had that CD with long forgotten articles on linears, you could
>eventually see there a copy of Bill Orrs RADIO HANDBOOK 22d edition 
>writing
>about the series resonance of capacitors:
>
>0.02uF MICA     no lead length 44.4  MHz
>0.002  MICA     no lead length 23.5  
>0.01   MICA     1/4"           10    
>0.0009 MICA     1/4"           55
>0.002  CERAMIC  5/8"           24
>0.001  CERAMIC  1/4"           55
>500 pF BUTTON   none           220  
>0.0005 CERAMIC  1/4"           90    
>0.01   CERAMIC  1/2"           14,5  
>
>You can check the resonant frequency yourself with an grid dip meter ( 
>used
>since 1938 - remember the AEROVOX LC-CHECKER? ). Just tie the leads
>together. You can in this way cut condenser leads  to  your operating
>frequency. By paralelling capacitors of different resonant 
>frequencies, you
>can make your decoupling more broadbanded. Remember there may be in 
>many
>places harmonic currents that you must take care of. The best 
>broadband
>condenser should be a multilayer chip condenser that has no leads at 
>all. Is
>there any that can take the high currents in a linear? CENTRAL LABS 
>858 or
>equivalent?
>
>Prosit and: hej daa de Hans SM5KI
>
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