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Anonymous Poster

capacitance

12/01/2009 8:08 PM

why should a capacitor with a working voltage of 250V not be used on a 230V a.c supply.
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TVP45
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#1

Re: capacitance

12/01/2009 8:54 PM

The working voltage rating is 250 VDC. For ac, a good rule of thumb is to use one-half of that, i.e., 125 VAC. If you go beyond those voltages (in fact if you stay at those voltages for long enough), bye-bye dielectric, hello leakage.

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bhankiii
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#2

Re: capacitance

12/01/2009 9:46 PM

Tell the teacher, "a capacitor with a working voltage of 250V not be used on a 230V a.c supply because 230V is the RMS value, the peak voltage will be ___" and you can fill in that blank yourself.
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stevem
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#3

Re: capacitance

12/01/2009 10:02 PM

Because it will explode.

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anand.mandarapu
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#4

Re: capacitance

12/02/2009 2:39 AM

Nothing like that, you can very well use.
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TVP45
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#6
In reply to #4

Re: capacitance

12/02/2009 6:32 AM

Please send location of your workbench so I can move mine away.

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PWSlack
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United Kingdom - Member - Indeterminate Engineering Fields - Control Engineering - New Member

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Location: In the bothy, 7 chains down the line from Dodman's Lane level crossing, in the nation formerly known as Great Britain. Kettle's on.
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#5

Re: capacitance

12/02/2009 3:02 AM

It's spelled "bang", and pronounced......

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