Gordon,
     Most capacitors will show this trait to a certain extent. Just like=20
all diodes emit light but usually at infrared frequencies and at very=20
low levels of light for the amount of current that is passing through=20
them. But there are capacitors that are designed to enhance this=20
capability. Most capacitors are designed to limit this as much as=20
possible. And there are diodes that are designed to act as capacitors=20
and you can change the capacitance value by changing the reverse bias=20
voltage. The diodes that do this are called varicaps.
Thanks,
rich!

On 6/27/2014 8:42 AM, Gordon Williams wrote:
> This area is way beyond me, but there was a discussion on eevblog
> recently  on how capacitor capacitance changed considerably with DC bias
> voltage.   I don't recall if this was capacitor type specific.
>
> Gordon Williams
>
>
>
> On 14-06-27 01:48 AM, Sean Breheny wrote:
>> Thanks for the response, Bob. Interesting idea but it isn't the case her=
e.
>> I know because I have a tracking generator connected to the spectrum
>> analyzer and swept the DC block to see its response. The Inmet is just f=
lat
>>

--=20
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