Rob Atkinson wrote:
>
>Well, Watts Unlimited was owned by W9QQ so if you could contact him,
>you might be able to get some information about it.
>
W9QQ died a few years ago. The Watts Unlimited company does not seem to
be active, but the design rights to the HV switcher must still belong to
somebody.
Although a number of these HV switchers were made, and are possibly
still in use [1], the design did have some problems. One was the very
poor output regulation - according to the user documentation, the output
voltage dropped from 3600V @ 100mA to 2600V @ 1.0A. (We can only
speculate why the design did not include active voltage regulation;
there must have been a reason.)
The other major issue was on the 115/230V mains input side, with very
little filtering and a serious confusion between the mains neutral,
'chassis ground' and the green-wire earth.
[1] http://www.gare.co.uk/k5and/8877.htm
--
73 from Ian GM3SEK
http://www.ifwtech.co.uk/g3sek
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