|[AMRadio] Breaker Info|
rickbras at airmail.net
Mon Dec 4 11:51:11 EST 2006
Maybe the center is for filament voltage only and when you go to the
bottom you have filament and B+...?
Jack Schmidling wrote:
> I need some help understanding the main power switch on my powersupply.
> I posted a pic to http://schmidling.com/breaker.jpg
> In the on position, the top and the bottom terminals are connected.
> This makes sense as this is one side of the AC line.
> I can not figure out what the center terminal is supposed to do.
> The only clue is the one of those black wires goes to a small
> transformer for the pilot light. The other lead goes to the bottom
> terminal. So center and bottom must be 110V but seems like it is on
> all the time.
> The device is a 15A Heinamann breaker but I can not read the part number.
> Any help?
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