[Test-Equipment] Question about series/parallel capacitors

[Mike Manes]

Yeah, that's an application where the bleeders would mollux things up.
And if the dead cap is part of a reference network, I'd think you'd
want tolerances way better than 5%/
73 de Mike W5VSI

On 5/13/2011 20:15, Barry wrote:
>> If the capacitors were perfect (zero leakage), the two are equal.
>>
>> With real capacitors, option A with a bleeder string to equalize the
>> capacitor voltages would be preferable.
>>
>> Why don't you buy a single cap to do the job and save a bunch of
>> trouble.
>> -John
>>
>
> This is an attempt to replace a "standard capacitor" in a General Radio Model 1617A capacitance bridge.  The original capacitor shorted.  I found some 0.5uF, 0.5% caps that are rated at 250V so I figured making an array out of nine of them would get me 0.5uF at 750V at 0.5% (or hopefully better).
>
> I think adding bleeder resistors would upset the balance in this application, right?
>
> I have my sights set on a true GR standard capacitor (a 1409-X); however, I think at best it's only rated at 500V and this bridge can develop 600V of bias so I'm not sure I can use that as a replacement.  I do plan to use it to check the accuracy of my home-made standard.
>
> Thanks!
> Barry - N4BUQ
>
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-- 
Mike Manes    mrmanes at gmail.com     Tel: 303-979-4899
"Things should be made as simple as possible, but not more so."
A. Einstein