Are Tommey Reed´s pulse motor circuits overunity ?

[Groundloop]

@wattsup,

My drawing is a direct copy from his videos.

@chrisC,

You are correct.

Regards,
Groundloop.

[chrisC]

@wattsup,

My drawing is a direct copy from his videos.

@chrisC,

You are correct.

Regards,
Groundloop.

Thanks Groundloop. And I think Tommey is correct. Here's my understanding from the latest 2 videos.

The battery & PWM draws 116ma and I assume a duty cycle of 50% at 12V. This is an average power of 0.116x12x0.5=0.7W.
The unloaded capacitor voltage spiked at 115V but settled at 24V useful voltage and runs the motor at 68ma (assuming it's all DC) giving a power at 1.63W . That's proof of O.U!

Correct me if I am wrong.

cheers
chrisC

[powercat]

53

Pulse generator, 30% load on bach EMF coil.
http://www.youtube.com/watch?v=GzS7MN_u-54&feature=channel_page

Quote from Tommey
At 30% of pwm pulse at 10khz the output of back EMF is greater then pwm set to a 50% pulse.
At higher amps at 30%, the increase of back emf of current.


cat

[Groundloop]

@chrisC,

Based on the measurement in his videos, yes, you are correct.

I have modified my test circuit with a hexfet (IRF840) instead of a regular transistor (2N3055).
It seems that I can not loop the output directly back to the input because the internal resistance
of the lead acid battery is so low that it is a short circuit for the captured back emf.

So if we want to do a full looped back test circuit then we will need a impedance match at the output
and to the input.

Regards,
Groundloop.

[nievesoliveras]

@all

My question is:

Is he using an in circuit PWM ? Or He is using an outside PWM ?
If the PWM is from the outside then there is not OU.

Jesus