Re: how to turn a universal motor into a generator
- From: default <default@xxxxxxxxxxxxx>
- Date: Thu, 10 Jan 2008 17:02:17 -0500
On Thu, 10 Jan 2008 16:36:07 -0500, default <default@xxxxxxxxxxxxx>
wrote:
The universal motor has a winding in the stator to produce the
magnetic field the rotor-armature needs to turn - and to generate
electricity.
That doesn't make a lot of sense. Sorry.
What I meant was that when you unplug it and just try to use it as a
generator the stator has no power and produces no magnetic field so
generates no voltage. That's where you are.
In truth it does produce tiny amounts of electricity but don't expect
much. Series wound motors can turn tens of thousands of RPM, your
electric drill can turn hundreds of RPM.
Disconnect the field from the armature. Apply DC to the field. Take
power off the brushes (armature) and you have a generator from a
vacuum cleaner motor.
Some (especially very large ones - think old fashioned elevator
motors) will actually self destruct due to over revolutions and
centrifugal force - keep that in mind when playing around with series
motors that have no load and are being used as motors - doesn't apply
to generators.
--
.
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