[Amps] Step Start

[gdaught6@stanford.edu]

OK, the consensus response to my question:

> > Why do step-start circuits in the primary of the HV transformer
> > have two resistors and relay contacts shorting the resistors in EACH
> > (i.e. BOTH) leads of the primary?

seems to be...

> So that it will work right on either 120v Or 240v mains.

As Rich and others have pointed out.  But the two-resistor scheme has 
overflowed into the 240V only power supplies, probably due simply to 
"copying what worked fine last time."

If one has a split primary or a dual primary transformer, then the 
two-resistor version is the way to go.  If it's a single primary, one 
is certainly adequate.

73,

George T. Daughters, K6GT