[time-nuts] Noisy varactor diodes

Brooke Clarke brooke at pacific.net
Tue Dec 18 19:55:34 UTC 2012

Hi Corby:

Did you measure the reverse leakage current on the good and noisy diodes?

Have Fun,

Brooke Clarke

cdelect at juno.com wrote:
> I was recently repairing a noisy A3 module for an HP 5065A.
> The phase modulator has 4 varactor diodes in parallel.
> Since I suspected a diode, I removed them one at a time.
> Of course it was the last one! Must be a universal rule there!
> Anyway here is a PIX of the noise with the diode reverse biased at 20
> volts.
> Anybody know where to get an MV840 ???
> Thanks,
> Corby
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