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Pulsed Electromagnetic Motor by G.M. -- Prototype 2Presently-working device by G.M. is a variation of Ed Gray's patent 3,890,458. G.M.'s version (variant) uses a combination of permanent magnets and electromagnets.
From: [G.M.]
Sent: Sunday, May 30, 2004 2:45 PM
Subject: Photos of present prototype PM/PEM,MG
Dear Sterling,
Here are the photos of the present
prototype under construction. PM/PEM,M-G The low voltage power switching
using infrared laser is now under construction and run in testing has been
performed.
Perfecting the laser switching will take
time, but it is worth the effort, no drag or parts to wear out . Mechanical
commutation was employed in the first prototype PEM.
-- GM
* * * * Motor Working Nicely
Dear Sterling,
The motor is firing nicely and
runs. At present I am employing mechanical pulsing to adjust timing of the
attraction and repulsion phases. The circuit testing will consist of four
different circuits, two low voltage and two high voltage. The laser switch,
consisting of a laser and a photo-detector provide the on-off switching for
pulsing the electromagnets.
Continuous run-in testing
will take place this week. The circuit consist of a pnp bipolar medium power
transistor connected to a npn high current power transistor, in a darlington
pair configuration. The laser switch provides the base current to pnp
transistor. The laser and photo-detector are operating and performing nicely
in testing. The transistor circuit will replace
an old pulsed dc circuit I have been using for testing purposes. I will
make the schematics of the circuits available when they are properly tested.
The high voltage circuits
are dangerous, similar to the Efficient Power Supply Suitable for Inductive
Loads. That is where continued experimentation with avalanche takes
place. Gray circuit prototype # 1 employed avalanche.
I prefer low voltage
circuits because of safety and the potential for mass marketing, although less
powerful.
After continuous run in testing I
plan to have the results inspected by a licensed electrical engineer and have
him stamp the test results to avoid any confusion or misrepresentation. This
will be part of the Preliminary Report scheduled for July.
After you receive the 'Technical
Discussion' by R. Hackenberger I will send the working drawings for the motor.
Perhaps your mechanical engineer can review the drawings and build a
prototype. It is not expensive, under $500.
[...]
GM
See also
Page posted by Sterling
D. Allan, May 30, 2004 |
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