On Sep 15, 3:03*pm, Highland Ham wrote:
steve H wrote:
wrote:
On Sep 15, 12:57 pm, Highland Ham wrote:
wrote:

snip This thing seems to be regulated primarily by the input
CURRENT which
would be the same as power and David Smith said in his discription. I
think the answer to using it as a power supply is to turn it into a
VOLTAGE regulated power supply by taking a voltage sample off of the
HV transformer, possible by adding a couple of turns coil to the
transformer, and replacing the input from the current transformer with
this one. Naturally the inpit to IINDO may have to be suitably
modified also.
==========================================
You might consider taking a voltage sample by 'tapping' a low DC voltage
fraction from the HV output ,putting that into an opamp with adjustable
output.

You can see how this is done in an article *in QEX-July.August 1999
,pages 50-55. 'A regulated 2400 V power supply ' by VE6AXW

Frank *GM0CSZ / KN6WH

============================================== Thanks Frank, but I dont have QEX or access

Jimmie

======================================http://www.realhamradio.com/hvreg.pdf

for a schematic.

hth

Steve H

=================================
Indeed ,that's the one. *Tnx Steve for the interesting URL

Frank * GM0CSZ / KN6WH- Hide quoted text -

- Show quoted text -


Is there any more info on the circuit besides the schematic?

This looks like something I could build and I probably already have
most of the parts.


I see it uses SCRs for switching. I guess there is no problem with
latchup. I built a 400Hz inverter one time and it seemed to work for a
while until one day it latched up on me and smoked. I had been using
it to power some selsyn motors. Someone plugged a soldering iron into
the inverter and I think it was a little too much load. I guess that
is what I get for not labeling my outlets.

Jimmie