On 2017-04-05, Gunner wrote:
On Tue, 4 Apr 2017 21:18:40 -0400, "Michael A. Terrell"
wrote:

Larry Jaques wrote:
On 4 Apr 2017 02:12:18 GMT, "DoN. Nichols"
wrote:

120VAC*.707=84.84V Average, unfilterd DC

Is that the constant for a gas rectifier tube, or a selenium stack?

Actually, it is the result of a pure rectifier -- no voltage
drop, so any real rectifier would have more drop. All of these are
larger drops than typical silicon rectifiers of today -- at least until
you get to seriously high voltages, which would have a number of silicon
junctions in series (at about 0.7V each) with resistors in parallel to
keep the reverse voltage evenly divided.

But in essence, any half-wave rectifier would produce voltages
safe for the motor. Stay clear of full-wave bridges, however, or
filter capacitors. :-)

Enjoy,
DoN.

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