Reed switches, Hall sensors, trigger coils... discuss

[TinselKoala]

Those are great and handy circuits. I've never been able to get them to "self start" when power is applied, it always seems to take a pretty good spin. I also don't know if the power-take-off can work with those circuits. Can you siphon off the spike from the coil and charge a capacitor to higher voltage than the supply?

I guess I should build another one and try. I can't find my proper magnets, though, I'll have to make some kind of special rotor out of separate magnets.

[conradelektro]

Those are great and handy circuits. I've never been able to get them to "self start" when power is applied, it always seems to take a pretty good spin. I also don't know if the power-take-off can work with those circuits. Can you siphon off the spike from the coil and charge a capacitor to higher voltage than the supply?

The circuits I showed do not self start, one has to give the rotor a spin by hand.

I was mostly interested in building a very low power pulse motor and this made the spike very weak. To do something interesting with the spike you need a good solid current running through the drive coil first (1 Ampere or more).

The attached Hall Sensor circuit produced interesting spikes. The drive coils had 260 Ohm DC resistance. But with coils having e.g. 50 Ohm DC resistance the spike would be even more interestingly strong.

I observed that harvesting the spike reduces the speed of the rotor.

Greetings, Conrad

[synchro1]

Quote from Conradelectro:

"The best idea concerning trigger coils came from TinselKoala who uses an OpAmp to increase the sensitivity of a trigger coil".

Milehigh originated the idea for the OpAmp circuit, not Tinselkoala!

The Tesla series bifilar power coil projects a "Magnetic Scalar" wave at high speeds that propels the magnet spinner with additional velocity. Try to power your reed switch spinner with a series wrapped bifilar solenoid, and compare the speed to input ratio over the single wire coil.

[TinselKoala]

Quote from Conradelectro:

"The best idea concerning trigger coils came from TinselKoala who uses an OpAmp to increase the sensitivity of a trigger coil".

Milehigh originated the idea for the OpAmp circuit, not Tinselkoala!

That's right, that's why it is called the MHOP: Mile High Op-Amp driver.

He had the idea, I just did all the work. Credit where credit is due!

The Tesla series bifilar power coil projects a "Magnetic Scalar" wave at high speeds that propels the magnet spinner with additional velocity. Try to power your reed switch spinner with a series wrapped bifilar solenoid, and compare the speed to input ratio over the single wire coil.

That's a crock of cheese. Even if there is a difference in speed that does not require a "magnetic scalar wave", whatever that is.

[synchro1]

@TK,


       You're the Liederkranz! The "Vortex": This wave has the magnetic poles trailing one another at 180 degrees, and resembles a smoke ring that's shrinks and expands as it travels. However, the series bifilar solenoid generates a transverse wave along with the longitudinal, with the magnetic poles at 90 degrees! The series bifilar spiral toroid that I created reduces the transverse wave and projects an even more powerful longitudinal EG wave. Professor Meyl has determined there are two varieties of "Scalar Waves": The electric and the magnetic.