[AMPS] HV filter capacitors

[Rich Measures]

>I have a question on HV power supply caps. I'm building a power supply for
>about 2500v at an amp or so to power some VHF amplifiers. I have an oil
>filled cap that's rated at 35 uf at 4500 V. I was thinking of using this
>cap, seeing it's similar to the cap used in the ARRL handbook for the
>3CX1200 amp. I have heard two conflicing ideas about this - 
>
>1. Great idea, that's what most supplies would use except they're too
>expensive. If you have one surplus go for it.
>
>2. These are made for low ripple applications and you're better off going
>for a string of electrolytics with a good ripple rating.

Even if the capacitor is designed for flash discharge service instead of 
dc filter service, with a 4500 peak-v rating, it should work well at 
2500v in dc filter service.  .  
>
>Has anybody had experience using a cap like this one. I used something
>similar years ago, but then again I used 6CW4's on 432 then also.
>
>Frank
>W2FCA
>
>
>
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R. L. Measures, 805-386-3734, AG6K   


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