Hello Charlie,
On Tuesday, July 21, 2015, you wrote:
> Along the same vein as Colin, I have an adjustable 0-4kv, 0-2.5Amp SMPS. It
> has a switch freq of 18 khz.
> Will this allow to change the Ep, and not retune?
> If so, why not use more often? Seems like an efficient way to go. Much
> lighter, and voltage regulation is <1%.
> What am I missing?
> Charlie N6CFH
I would be most interested in seeing photos and a schematic of this,
or a similar high voltage, high current SMPS, either home brew or
commercial. The tight voltage regulation, and not having to put my
back out lifting huge linear supplies is very appealing!
A big thanks to Manfred too, for another fascinating post on SMPS
matters.
I run a big transformer that gives 5kV at well over an Amp off a 25
Amp variac. I mainly run it with the variac switched out, but it's a
very useful beast for general HV supply duty, and regulation, looked
at on a scope with a loosely coupled coil winding, is pretty good even
with the variac giving about 180V AC into it, instead of our UK 240V @
50Hz. It's just so *BIG* though, in a castored cabinet, and would need
dismantling to safely get it down the stairs from my upstairs "shack".
--
Best regards,
Chris mailto:chris@chriswilson.tv
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