This may be blasphemy, but you
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could replace the rectifier tube with
a couple of diodes.
You may need a small resistance to
adjust for the lower voltage drop in
73, Dick, W1KSZ
On Sun, Jan 26, 2020 at 4:34 PM Roy Morgan <firstname.lastname@example.org> wrote:
I would strongly suspect a shorted filter cap in that supply.
If you have an external variable B+ supply, bring the voltage up VERY
SLOWLY at the tube cathode while monitoring the current. (Scope power off)
K1LKY Western Mass
On Jan 26, 2020, at 6:10 PM, Steve Hendrix <SteveHx@hxengineering.com>wrote:
started getting extra hot within seconds of power-on, and then started
Okay, it's a "valve" for our limey friends!
... One rectifier tube right next to that monster power transformer
arcing and making a nice arc lamp. ...