Is this the first selfrunning overunity motor w/o batteries ? Mike?s motor

[hartiberlin]

Hmm,
I also wonder, how this Solid State Relay really functions...

From the PDF File I posted it can be seen that it is a "Zero Volt Turn On"
model type.
That normally means, that the relay only switches on, when
the applied load voltage crosses the zero region.
Normally these are used to switch AC loads like incand. bulbs at the
zero crossing voltage region and then just switch off,
when the AC is going through zero Volts again, cause they are thyristor
controlled...

Hmm, what also puzzles me, the datasheet also says,it has a delay
of about 8.33 milliseconds to turn on and off..
This seems pretty long,also for normal 220 Volts switching operation
as one 50 Hz wave is already only 20 milliseconds long...
Hmm...

Mike should try it with other switches, as this is indeed
really hard to say, what the SS relay is doing in this circuit.

Much easier to replicate would be a reed relay switch,if this would work
to.

Regards, Stefan.

[barbosi]

...
Hmm, what also puzzles me, the datasheet also says,it has a delay
of about 8.33 milliseconds to turn on and off..
This seems pretty long,also for normal 220 Volts switching operation
as one 50 Hz wave is already only 20 milliseconds long...
...

The delay can be compensated from the sync wheel.
I agree also about your comments concerning the relay.
I guess a faster and easyer method is to replace the relay and hall with a reed switch. Not only is cheaper, but also would help to determine if the relay has a contribution to this. Regardless the lifetime of reed contacts, it would be nice if the same motor will still run.

Thanks.

[hartiberlin]

Mike posted the voltage on each coil alone
measured by a scope,
when he disconnected the 3 coils from his unit and
measured the voltage alone on each coil and
just did turn the rotor by hand.

He got at the about same RPM:

4.5v ac main winding( 2nd coil)
2.2v ac trigger winding ( 1st coil)
2.8 v ac third winding  (3rd coil , induction coil at graetz bridge)

[barbosi]

Let's try to resume the facts.
What was introduced in Mike's design?
1. the relay
2. the third coil
3. details about the size of the coils (ohmic)

What we still don't know? (other questions might arise later)
1. Is important to mark in schematic the start of the third coil with respect to the same winding sense?
2. What (hiden) role plays the solid state relay? Can this be replaced with a reed switch? If not, we need to determine what makes all the difference if we use the relay. Can be used another type of solid state relay?
3. What would be an optimum ratio between the windings? The size mathers? How much? (but this point 3 is for tunning, first most important thing is to succesfully replicate the motor by as many as possible).

Any other opinions are more than welcomed.

[barbosi]

By studying the scope trace from coil 3, I would sugest also another modification as shown in the picture. It should bring two more spiks on the down slope. It should charge the capacitor faster.

Why are there 2 spikes anyway? beats me for now... other important things are runing now.