Reasonably priced back then but the stability was horrible. Based on
LM399 series zeners as far as I remember (but that was a long time
ago).
2012/8/18, David C. Partridge <david.partridge@perdrix.co.uk>:
> Does anyone know anything about this? Any manuals to be found (I failed)
> :(
>
> Thanks
> David Partridge
>
>
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