On Jan 9, 3:03*pm, Brian Lawson wrote:
On Sat, 09 Jan 2010 10:04:25 -0500, Spehro Pefhany
On Fri, 08 Jan 2010 23:45:09 -0600, the renowned Don Foreman

... hysteretic switching *current regulator ...220 uH inductor
...MCP6022 opamp, *MOSFET, Schottky diode, sense
resistor and voltage reference.

... a flyback converter using a UC3843 (clone), with the usual TL431 2..5V
reference/optoisolator feedback, so changing the resistor ratio on the
TL431 would allow the voltage to be lowered to something like 3.5V. ...
Spehro Pefhany

Hey you two,

I know there's lots of OT stuff here on RCM, but it's ALMOST ALWAYS in
ENGLISH !!! *
So how about sticking with the common language in this thread!?!?!?

Heh heh heh.

Brian Lawson,
Bothwell, Ontario.

I mentioned earlier working for both MEs and EEs. They don't
understand each others' secret language and aren't always too happy
that I do.

jsw