Confirming the Delayed Lenz Effect

[gotoluc]

New coil has no effect on rotor speed when shorted.

It also accelerates when used as an air core.

All of the details are in the infobox of the video :

https://www.youtube.com/watch?v=e9X7tqNCZqM


Cheers,

DC.

Hi DC,

great job on the new coil!

Could you do some power measurements using a 1, 10 and or 100 ohm resistor instead of just a short. It would be nice to see the max power output you can get from your new coil (with and without core) while keeping the input current rise to a minimum.

Thanks for your great research and sharing your results.

Luc

[DeepCut]

Hi DC,

great job on the new coil!

Could you do some power measurements using a 1, 10 and or 100 ohm resistor instead of just a short. It would be nice to see the max power output you can get from your new coil (with and without core) while keeping the input current rise to a minimum.

Thanks for your great research and sharing your results.

Luc

Thanks Luc

I will have to wait until my gf goes to bed (10pm UK time) because it's a loud, high-pitched whine.

Jean-Louis was surprised by the aircore result, he was sure the effect was due to viscous remanent magnetisation.

He says he will do some aircore testing soon, i can't wait to see tests done with his superior hardware


Thanks for your encouragement and suggestions,

DC.

[conradelektro]

First spin:

I could do a first test of my set up. Only one Hall sensor and a 2N6111 transistor.

See the attached drive circuit. Just a test of how fast the ring magnet spins:

15 V supply Voltage --> 17 mA average power draw, ~ 0.25 Watt, about 60 Hz (3600 rpm)

18 V supply Voltage -->  22 mA average power draw, ~ 0.4 Watt,  about 80 Hz (4800 rpm)

Now I will proceed to a transistor H-bridge and two Hall sensors (thanks to Gyula it might even work).

I might need a coil with less windings (higher power draw) to reach a really high speed.

Greetings, Conrad

[DeepCut]

OK i couldn't wait so i moved the setup into the kitchen for load-testing.

I put the output through the FWBR.

Measuring the FWBR output using a DMM with no load i get 120 VDC.

Using an analogue ammeter, i tested a 10 Ohm load.

This gave me just over 9mA.

Measuring the voltage gave me zero volts !

Testing the 100 ohm resistor gave me just over 9mA.

Measuring the voltage gave me zero volts !

So i took the ammeter out of the loop to test the voltage straight off the FWBR and got 120 VDC again.

I have triple checked the resistors, the 10 ohm is 9.6 and the 100 ohm is 99.8.

I tried some real loads, three different incandescent light bulbs.

One is 240V, one is 12V and the other 6V.

Again, zero voltage is being measured.

I checked the multimeter against some new batteries and it is spot on.

I'm not well-versed at all in power measurement but i know how to rectify, put a load across the rectifier, measure amps in series and voltage in parallel.


Any help greatly appreciated,

DC.

[Farmhand]

Nice speed! I get the impression that the effect (no drag, speed up) can be produced with any coil as long as the magnet spins fast enough?

(My set up is not finished, many other chores hold me up.)

Greetings, Conrad

Hi Conrad, A coil of many turns is not required, I got acceleration under load and short circuit using
a small coil of 270 turns with 7 mH and only 0.8 Ohms resistance.

I simply used the correct amount of capacitance so that the unloaded coil presented a fairly large Lenz drag
to the motor, then when the load is added or the output shorted the Lenz drag is reduced and so the motor speeds up the rotor.
There may be some resonant kick back to the rotor, but mainly it speeds up because the actual load is reduced by adding the
electrical load or short circuit.

Look at the scope shots.  http://www.youtube.com/watch?v=iFWin-crxQY

By winding many turns the resonant frequency of the coil is reduced into the range of operation of the motor generator, without adding a capacitor, same effect
but my way has less resistance.

If the effect is so unique and unusual, then how come i can do it with the small coil I used and how come i can do the transformer thing as well.

It is a frequency induced restriction of the maximum current and a reduction in Lenz drag when a load is added.

The "prime mover" I used was a universal motor powered by DC from a boost converter, the motor was designed for 240 volts but I used only 20 to 35 volts. 

We can see the effect is obvious with resonant systems. The electrical load reduces the total system loading by altering the parameters of the
circuit. The load on the supply is reduced, that is why the rotor speeds up when it is a generator and why the input reduces with a transformer.

http://www.youtube.com/watch?v=WRzQ_CO9vnw

Here's more with a regular transformer.

Input reduction under load effects ect..  http://www.youtube.com/watch?v=Zxde9qga79c

Same transformer lighting a globe efficiently with full rated voltage. http://www.youtube.com/watch?v=7pzqxQwxVGA

This is a normal effect, i see no reason why it shouldn't happen if the conditions are made to allow it to happen.

Normal generators/transformers are designed to be efficient and power loads when they are added with full voltage and power,
so they don't show the effects of a poorly designed and used generator or transformer.

All reactive power is just applied power not yet used, it doesn't come from anywhere but the supply.

Cheers