Thanks all for the ideas ... I have a couple of potential solutions.

Tony, KD7TOG

One more idea -- the old mass-produced geiger counters now available
cheaply on eBay have very simple HV supply circuits that use minimal
components, and run from 1.5 to 6 or so volts, depending on the model.
They come with a schematic and parts list. Although the parts are just
about all obsolete, you could find modern substitutes that would work.

Roy Lewallen, W7EL

KD7TOG wrote:
Thanks all for the ideas ... I have a couple of potential solutions.

Tony, KD7TOG

One more idea -- the old mass-produced geiger counters now available
cheaply on eBay have very simple HV supply circuits that use minimal
components, and run from 1.5 to 6 or so volts, depending on the model.
They come with a schematic and parts list. Although the parts are just
about all obsolete, you could find modern substitutes that would work.

Roy Lewallen, W7EL

KD7TOG wrote:
Thanks all for the ideas ... I have a couple of potential solutions.

Tony, KD7TOG

In article et, "KD7TOG"
writes:

Thanks all for the ideas ... I have a couple of potential solutions.

Tony, KD7TOG

This isn't a direct solution but it looked interesting if someone wants
to try it - Harry Lythall's accidental discovery of an LM317 series
voltage regulator as an RF oscillator at low HF.

http://w1.859.telia.com/~u85920178/tx/317-tx.htm

Use a toroidal core and/or a multiplying rectifier and the voltage could
be sizeable.

Len Anderson
retired (from regular hours) electronic engineer person

In article et, "KD7TOG"
writes:

Thanks all for the ideas ... I have a couple of potential solutions.

Tony, KD7TOG

This isn't a direct solution but it looked interesting if someone wants
to try it - Harry Lythall's accidental discovery of an LM317 series
voltage regulator as an RF oscillator at low HF.

http://w1.859.telia.com/~u85920178/tx/317-tx.htm

Use a toroidal core and/or a multiplying rectifier and the voltage could
be sizeable.

Len Anderson
retired (from regular hours) electronic engineer person