Effect of Recirculating BEMF to Coil test 3

Details can be found at the Overunity Forum: http://www.overunity.com/index.php?topic=7713

Category:

Science & Technology

Tags:

• Coil
• BEMF

[bartley440]

You have to understand that a coil will store magnetic energy in a AC circuit (pulsing DC). But a coil in a DC acts like a wire or short with little or no resistance. They use diodes as a quenching or blocking circuit in Flyback transformers the same way you're using it. The short the back EMF so it will not damage the driver circuit.

[gotoluc]

Hi bartley440,

I understand. This test demonstrates that much more work can be done with much less energy by using very short pulses if you redirect the collapsing field energy back into the coil.

Luc

[janne808]

Interesting.. makes sense that there's current running thru the coil/diode circuit, otherwise there wouldn't be any magnetic field to support the magnet.

I forgot to write about this idea I had on your last video; is this voltage high enough for the diodes to reverse breakdown avalanche. What sort of diodes are you using exactly?

[gotoluc]

Hi janne808,

the diodes reverse breakdown avalanche is an interesting idea! from all the diodes I had on hand these two MUR420 in parallel worked best.

Luc

[maximumgravity]

Im not sure why this is so hard to understand, nor why the "measurbaters" want to isolate every component to verify what they are actually seeing.

When looking at the scope in video 2, there is a large spike that goes off the scale of the screen. It is way larger then what is going into the mosfet or into the coil. When that large amplitde spike is put back through the circuit, why is it so hard to believe that it will do more work then the small continual one???

[TinselKoala]

Hi Luc

Nice work as usual, and an interesting way to image the current--the magnet lift.

Unfortunately, despite your preliminary conclusions, your circuit does not create any excess energy. It displays pretty clearly how easy it is to make errors in power calculations with pulsed circuits.

Can your oscilloscope integrate waveforms over time? If so, it will be possible to get a more precise idea of the power balance in your circuit.

answers d o t com slash electric-power-measurement

[centraflow]

Well done as usual Luc. As we were talking about before, I think it would be interesting to use a system as we discused putting the bulb mosfet and the resistors in a calorific container and measure the temp: in the straight mode and then in the pulse mode. Take a note of your settings so that you can repeat this without the magnet so as it can be seen if the magnet is having an effect and if so how much etc.

Mike

[gotoluc]

Hi tubemp777,

from all the diodes I had on hand these two MUR420 in parallel worked the best but the main effect can be achieved with most high voltage diodes. It would most likely work with 1N4007 diodes.

Luc