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Philco bakelite condenser 4989 Z?
05-06-2012, 10:34 PM
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Ron Ramirez Online
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RE: Philco bakelite condenser 4989 Z?
Hi

The 4989-Z has two .09 uF caps in parallel to make .18 uF. You will note there is an external jumper wire between the center terminal and the outermost terminal; the grounded terminal is common to both caps.

Yes, you can use a single 0.22 uF in place of the two, or two single 0.1 uF caps. Close enough for gubmint work, as they say.
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Ron Ramirez
Ferdinand, IN
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RE: Philco bakelite condenser 4989 Z? - Ron Ramirez - 05-06-2012 10:34 PM

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