Quote:
Originally Posted by Bazz4CQJ
When Skywave said that 'HV' Zeners were poor, I was thinking that 'HV' implied 20V or more.
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To me, 'H.V.' for a Zener diode is
much higher than 20 v.
I was thinking of my earlier attempts (ISTR last year) to produce a d.c.voltage calibrator. For that I used Zener diodes of 56 v. and even higher: they were rated at something akin to at least 1-watt. That rating was necessary because of the design I was trying to develop. So they got rather warm - and consequently the Vz drifted to such an extent that the resultant regulation was simply inadequate for the intended need.
However, I am now working on a different approach towards the same end. It's currently an active thread in
Circuits & Components.
Al.