[Lab] what are these motors?

[Darcy Whyte]

Why does it have 4 wires?

On Mon, Aug 1, 2011 at 9:50 PM, Richard Guy Briggs <rgb at tricolour.net>wrote:

> On Sat, Jul 30, 2011 at 01:16:47PM -0400, Darcy Whyte wrote:
> > Anybody know what these motors are?
> >
> > http://mambohead.com/2011/07/120v-timing-motors/
>
> They are 120v 60Hz A/C synchronous motors.  They could be used in
> clocks, washing machine or clothes dryer timing dials, etc.  I have one
> in my Hammond organ that precisely sets the tuning of the instrument.
> It spins the electromechanical tonewheels at the correct frequency to
> generate the tones for musical notes, hence the organ is not tunable and
> everything else has to tune to it.  In fact, Laurens Hammond was
> originally an electric clock inventor and may actually hold the patent
> for the motor itself, if not its use as an electric clock timebase.
>
>        slainte mhath, RGB
>
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