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Electronics Repair (sci.electronics.repair) Discussion of repairing electronic equipment. Topics include requests for assistance, where to obtain servicing information and parts, techniques for diagnosis and repair, and annecdotes about success, failures and problems. |
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Posted to sci.electronics.components,sci.electronics.design,sci.electronics.repair
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Cap value for timing circuit
Relay-logic controlled printing machine, 110 vac.
A 300mfd (150v) electrolytic cap is used together with 25K (25 W) ohm wirewound pot and a 5K ohm relay coil to control a variable time delay before the relay opens. The cap is shot (measures less than 1mfd). I'm having a hard time finding a replacement locally. (Yeah, I know: Digi-Key, et al) But I need to get this up and running today. What other common types can I use in place of this can-type cap? (It has 2 wings that rivet to the sides of the opening in the chassis and solder terms make the connection below the chassis.) Maybe poly-somethings, two in series or parallel? It's a Mallory FP119A. Can I use a non-polar electro? (The wiring diagram shows a polarity indicator.) Or a motor-start cap? :: http://tinyurl.com/y9d3ks6 Thanks, Dave |
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