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Overunity Machines Forum



Pierre's 170W in 1600W out Looped Very impressive Build continued & moderated

Started by gotoluc, March 23, 2018, 10:12:45 AM

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listener191

#260
April 04, 2018, 10:18:17 AM
Hi Gmolina,

No sorry you are incorrect..see attached
You can clearly see the stator is laminated steel.
The orange tube is just to pack the airgap to stop the rotor vibrating, which I can confirm it does, unless the air gap is firmly packed.

Regards

L192


listener191

#261
April 05, 2018, 08:52:30 AM
Seems  my reported demise of a L298N after extended running at 4A was premature.

The device had actually entered thermal shutdown and it took some time to recover.

I tested the board the next day and all was well.

This demonstrates they are pretty robust.

Regards

L192

r2fpl

#262
April 05, 2018, 09:28:09 AM
The current flowing through the relay is about 8A or more. The effect may not be below a certain value. It's better to use more robust layouts.

listener191

#263
April 05, 2018, 10:03:53 AM
Quote from: r2fpl on April 05, 2018, 09:28:09 AM
The current flowing through the relay is about 8A or more. The effect may not be below a certain value. It's better to use more robust layouts.

Hi R2fpl,

Yes I totally agree.

I am waiting on one of the BTN7960B boards for evaluation.

It will have a 28V rail limit, so I want to see how much current I can get to pass through two sets of coils before deciding.

Also I think it wont sustain 10A on the heatsink supplied, with out thermal shutdown, so that's  another area of experimentation,

to see how the boards could be bolted on either a large heatsink plate or a thick aluminum angle rail.


Regards

L192

T-1000

#264
April 05, 2018, 10:12:50 AM
Quote from: listener191 on April 05, 2018, 10:03:53 AM
It will have a 28V rail limit, so I want to see how much current I can get to pass through two sets of coils before deciding.

Also I think it wont sustain 10A on the heatsink supplied, with out thermal shutdown, so that's  another area of experimentation,
It depends how far you would like to go on heating coil wires.

In Pierre's setup the input was 110V 1.5A which translates to 165W in total and supercaps was on 20V charge. Which translates to 8.25A consumption in total across all coils minus BEMF recovery.
And for a sake of test how much you can get from artificially created rotating magnetic field it does not need to consume so much power.

Cheers!
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