How to Build a 0-600 pF Variable Capacitor Easily and Elegantly?

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#1 21685209 20 Jan 2021 09:59

John Curtin John Curtin

Anonymous

Post #1
21685209 20 Jan 2021 09:59

Hello.
How can I make a 0-600 pF variable capacitor, in an easy but elegant way?
Thank you all.
John
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#2 21685210 25 Jan 2021 10:12

Giovanni Di Maria Giovanni Di Maria

Anonymous

Post #2
21685210 25 Jan 2021 10:12

Hello.
Building elegant variable capacitors is an art. Building a working variable capacitor is very easy, but building it elegantly is difficult. You need to know how to work iron and mechanics well. Anyway you can see some videos on youtube, but I haven't found a really professional video yet.
Greetings
Giovanni
#3 21685211 28 Jan 2021 18:13

John A John A

Anonymous

Post #3
21685211 28 Jan 2021 18:13

Very old "valve"/"tube"radio sets (up to about the 1960's!) often used large multi-vane air-spaced variable capacitors of up to 0-400pf, and maybe higher - possibly in sets designed to work at very low frequencies, especially those for military use - and so I'd have a look for designs for those and see if you can identify and then obtain a suitable capacitor.
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How to Build a 0-600 pF Variable Capacitor Easily and Elegantly?

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