Controller circuit for Hilden Brandt motor needed..

[dingbat]

I tried putting freewheel diodes on the motor while I was there.  It doesn't work.  It gets rid of the spikes, but it causes the motor to quit functioning.  The current through the diodes apparently causes a magnetic field in the coils that is quite detrimental to the operation of the motor.  Killing the spikes across the points kills the motor.  The motor slowed down rapidly when I put the diodes in the circuit.

db

[hartiberlin]

Okay, dingbat,
but how much was it slowing it down ?

Then the only other option is
to use real good points from
graphite and copper and have just in parallel with each coil
at least a 60 Watts fluorescent tube
to suppress the spark and get ridof the high voltage.
Then the voltage is clamped to the about 300 to 400 Volts
where the fl tube fires.
Then it would be best to use a few 12 Volts lead acid batteries
in series to drive the motor as these are recharged
via the sparking that is left at the points.
(->Newman effect)

@JackH,
if you use the circuit make sure that the positive supply Voltage is
applied at the top and the negative pole at the bottom.
( So the diodes only conduct during the BackEMF)


Regards, Stefan.

[JackH]

Hello dingbat,

I just remembered that you tryed the diodes over the coils.  We tryed so many things that day that I forgot about that one.  Thanks dingbat, for any help you can give on this motor.

Thanks again.


Hello Stefan,

I'll go ahead an try it again Stefan. once I get the diodes and the light bulb.  I'll just try it on one coil and see what happins.

Later,,,,,,JackH

[utilitarian]

Based on what I have read from Jack's description of his motor, what makes the motor run, and indeed the whole novelty of this thing, is the ability of the device to "turn off" a permanent magnet.  This is the groundbreaking part.  Can anyone verify that this is what's happening?

[JackH]

Hello utilitarian,

It not only turns the permanet magnet ON/OFF, but it amplifies the permanent magnet by 4 times to the rotor.

Later,,,,,,JackH