Pulse motor build off time.

[MarkE]

I think that the simplicity is ingenious.  The reason that the capacitor charges above the battery voltage is that the capacitor is charged by the flyback action of the coil.  First current builds up in the coil when the battery is connected across it, and then when you interrupt the negative side of the coil that voltage "flys back" untill the diode conducts and the current flows into the capacitor.  The capacitor voltage charges up each time that happens.  The voltage goes down as you drain charge out of the capacitor.

[shylo]

Thanks Mark, that makes sense,
If I had more generating coils, I could up the speed of the pulses to the battery,?
That should help right?
artv

[MarkE]

Thanks Mark, that makes sense,
If I had more generating coils, I could up the speed of the pulses to the battery,?
That should help right?
artv

If you go to more than two coils then you will have more average torque that will accelerate the wheel and your switches will turn on and off faster.  You will also be dumping more power into your capacitor because of the additional coils and the faster operation.  At some point you will need to be mindful of the power dissipation in whatever you are using to discharge the capacitors as well as how high the capacitors charge.

[ramset]

here we have another entry ready for prime time


https://www.youtube.com/watch?v=tgX5cz1SMiw


enjoy


@Toad
keep a flipper to the ground [sending a PM]
[not sure if toads has ears.... ]


thx
Chet

[shylo]

Hi Mark, you say I will have to be mindful of the power disapation for what I'm using to dump the caps.
The first switch I show is what dumps the caps ,it is just controlled by a passing magnet that cuts off the drive coils and engages the caps for discharge.
How can there be any power drain here?
Thanks for your time.
artv