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Metallized Polyester Film Capacitors
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Topic: Metallized Polyester Film Capacitors (Read 2615 times)
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SG-1
Regular Contributor
Posts: 198
Metallized Polyester Film Capacitors
«
on:
February 19, 2011, 12:07:27 am »
The capacitor has a DC rating, but neither end is marked +/-
http://www.vishay.com/docs/42091/v430p.pdf
Works either way ??
A .47micro-F is being used in parallel with a 400V 40A diode in a 125VDC circuit.
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mikeselectricstuff
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Re: Metallized Polyester Film Capacitors
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Reply #1 on:
February 19, 2011, 12:44:08 am »
These caps are non-polarised, so can be used any way round.
Only caps that use 'special' dielectrics to achieve high capacitances are polarity sensitive - e.g. electrolytic, tantalum, aluminium polymer.
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SG-1
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Posts: 198
Re: Metallized Polyester Film Capacitors
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Reply #2 on:
February 19, 2011, 01:55:29 am »
Well now, that just takes all the potential for excitement out of this circuit !
Thank you very much.
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Zero999
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Re: Metallized Polyester Film Capacitors
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Reply #3 on:
February 19, 2011, 09:50:38 am »
Yes they're non-polarised and note how much larger they are than electrolytics of the same value and voltage rating.
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