Trim capacitor

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zamproject

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May 11, 2010
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Hi all

I'm looking for mica capacitor, pressure trim like Arco series 300 or 400 that can handle high voltage (250/500), in the 500/1000p range for max value
Is there any manufacturer that offer this kind of component today ? I just find nothing...
(I know it's possible to source NOS Arco)

Best
Zam
 

zamproject

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May 11, 2010
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1,098
The frequency is about 7 octave 20 to 2k (tube syth) with 4 RC network octave bank (keyboard only 4 octaves)
The C part is already using fixed capacitors in parallel, I can pre set more accurately for sure the fixed part of C
The original parts varies about 200p(+/-100) to 500p(+/-250) depending of octave setting (this is 4 tuning capacitors)
What is the ref/brand of the 120pF you have in mind ?

I just have a look at some PTFE (not mica) from Vishay...100p 300v but only 10 cycles of turn...
 

abbey road d enfer

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What is the ref/brand of the 120pF you have in mind ?
I can't definitely vouch for them!
There's also that
Honestly, it was more to show you the paucity of offer, ratger than a recommendation.
 

zamproject

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May 11, 2010
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1,098
Tks Abbey, I'll see what I do, probably NOS Arco is the best option finally
For sure there is lot of them around but the small ceramic don't hold the spec I need...

Best
Zam
 
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