[Test-Equipment] Question about series/parallel capacitors

[J. Forster]

Maybe. If the guy used 22 MOhms, it'd probably be OK. After all, the
bridge is not a 1615A or something super precision.

FWIW,

-John

================



> 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
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