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Old 12th Oct 2019, 12:11 pm   #11
electrogram
Heptode
 
Join Date: Jul 2008
Location: Hereford, UK.
Posts: 719
Default Re: Capacitors to stock?

For valve radios this is what I like to have available.Polypropylene , or even old polyester 400v or 630v, 0.001uf, 0.0022, 0.0047, 0.01, 0.022, 0.047, 0.1 , 0.2. 0.47. You will get through lots of the 0.047 and 0.01. You may also need class X2/Y1 safety capacitors to go across the mains or for mains isolation, most commonly used values 0.1, 0.01. Electrolytics 10, 22,33, 47uf at 350 volts, sets with an energised speaker may need 450v. You can use lower voltage , 50v for cathode bypass. You need to consider the ripple current rating when buying Electrolytics to be used as the reservoir capacitor, 100ma should be adequate for a typical 5 valve domestic set. Post crossed with above.
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