[Amps] Step Start

[R.Measures]

On Aug 12, 2005, at 9:14 AM, gdaught6 at stanford.edu wrote:

> Hi all,
>
> While we're on the subject of soft/step start circuits, I'd like to
> ask a question that I've had for years, but never asked until now:
>
> Why do most step-start circuits in the primary of the HV transformer
> have tow resistors and relay contacts shorting the resistors in EACH
> (i.e. BOTH) leads of the primary?

So that it will work right on either 120v Or 240v mains.
>
> Doesn't a single resistor and relay do the same job?  It's a single
> current path.

In a 240v only amplifier, yes.
>
> 73,
>
>
>
>
> George T. Daughters, K6GT
>
>
>
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>

Richard L. Measures, AG6K, 805.386.3734.  www.somis.org