Chuck Harris wrote:

For a swinging choke to work, the power supply must be choke input. It
is necessary that the choke see the massive AC ripple that comes out of
the rectifier. No ripple, no regulating effect from the reactance.

Okay, wait a second.

You're talking about a configuration where the choke is seeing both AC
and DC on it, and both are required for regulation. The impressed AC
is modulated by the DC, correct? As the DC voltage changes, the inductance
changes, so the reactive part of the impedance changes and the AC voltage
changes. Do I have that right?

I was thinking about a configuration where the choke sees entirely AC,
which would be a different thing altogether, like you see in arc lamp
power supplies. I thought they worked the same way but it's clear they
don't.
--scott

--
"C'est un Nagra. C'est suisse, et tres, tres precis."