[sdiy] OT- Battery powered HV supply?

[harrybissell]

If you don't need mains isolation... I'd use one of those little "Flatpack"
transformers of any size... with the primary windings connected as
autotransformer

(so 120V in = 240V out) then rectify that.   If you don't care about ripple you
could filter with a film cap, giving a long, safe operating life

H^) harry

Toby Paddock wrote:

> Sorry for yet another off-topic question, but this is where the good answers
> are.
>
> I finished a little blinky neon bulb project and I found the current draw is
> lower than I expected. 20uA at 300V. So now I'm wondering about a low current
> battery powered supply.
>
> Any favorite extremely low current supplies? I don't care about requlation or
> ripple. Would be nice if I could hang this up without wires and have it run
> for a year. I guess I could use 34 9V batteries.
>
> Thanks,
> Toby