[R-390] Selenium Rectifier

[Tim Shoppa]

Barry asks:
> Anyone know how much current K101A and K101B pull?

The two windings in parallel are about 100 ohms.

They're fed with pulsating 25.6*1.4 = 35VDC peak DC (minus
selenium rectifier losses) which would mean maybe 200mA current
if driven by pure DC.  But I suspect inductive impedance means that
actual current draw is much much less when fed with pulsating DC,
my gut feeling just looking at the selenium rectifier and size
of the relay coils that it's like 40 or 50mA.

Yeah, I know, you asked for a real measurement, not a gut feeling :-).

If you can wait until this weekend I can put a resistor in series
with the selenium bridge and see what the actual current draw is
(my blue striper had a smashed-up selenium bridge I gotta replace
too!)

Tim.