[volt-nuts] Valhalla 2734A

[Will]

I don't remember the details but the voltage step up had some design
flaw too. Bill seems to have a 2734A on hand, so maybe he can tell us
more. I am pretty sure I have one in my garage but I couldn't locate
it. I saved it when it was trashed at work just a year after the
purchase because of the previously mentioned stability problems.


2012/8/19, Robert Atkinson <robert8rpi at yahoo.co.uk>:
> Hi
>
> Sounds like the Valhalla is a candidate for a LM399 or LTZ1000 transplant if
> you can get one at the right price. As others have shown an ovened "plain"
> zener can work, but only if you test, burn-in and test again to find the
> good ones and adjust the current for the individual diode. Sounds like
> Valhall went for the statistical approach.
>
> Robert G8RPI.
>