Re: Problems with t935a HV supply


Ozan
 

On Wed, Jun 9, 2021 at 02:50 PM, Ham Radio wrote:


The HV diodes are shot for sure. One has a forward voltage drop of 11.2 volts
and the other one is 11.8 volts. New ones on order. Internally, the diode
stack in the one measuring 11.2 volts is bad.

Not sure what a good 10KV 10ma diode should measure.
I don't know the expected typical Vf for this diode (SEF100?) either but here is some brief data for it:
https://datasheet.datasheetarchive.com/originals/distributors/Datasheets-X2/DSA870000-167.pdf

Unfortunately it only shows max Vf (min current at Vf).
Ozan

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