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A fundamental electronic component that stores energy in an electric field, commonly used in filtering applications.

1
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example, if two 400 VDC capacitors are in series, with parallel balancing resistors on the order of 100 kΩ, and moisture provides a path across one resistor, the PCB or one capacitor, it might cause 750 V … to appear across the other capacitor, and 50 V across the "shorted" one. Worse yet, look for charring where the water provided a path for HV. …
answered Sep 18 '18 by DrMoishe Pippik
1
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As noted by Tony EE rocketscientist, it's just a ceramic cap, which has no intrinsic polarity. From your reference: BTW, the only reason I've posted this here is to include a diagram... please com …
answered Aug 1 '18 by DrMoishe Pippik
1
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that an equalizing network is needed, and during heavy discharge, it might not be sufficient to prevent a weak capacitor from being reverse-charged beyond 2.75 V. …
answered Aug 5 '18 by DrMoishe Pippik
3
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voltage rating than the OEM is a good idea, and 250 VDC for a 150 VDC unit is fine. Slightly exceeding the capacitance is also acceptable, but too large a capacitor could draw too much on startup … , eventually damaging the rectifier. Don't replace a multi-section capacitor with a single one, since each section is part of an R-C multi-stage filter and voltage divider. You can use a separate modern …
answered Aug 14 '18 by DrMoishe Pippik