170 watts in - 1600 watts out - looped - Very impressive build and video

[listener191]

As you would not want to use Pulse Width Moduation on the Arduino pulse outputs, to maintain overlapping pulses, I would suggest using a switch mode power supply with a variable voltage and current limit.

This would also allow you to eliminate the large current limit resistor, as the switch mode power supply would limit the current to its maximum automatically, avoiding waste of energy in the resistor.

The switch mode power supply could be a 115VAC input chassis unit, or bench supply unit, or to reduce cost, use a low voltage winding on the rotor, rectify and smooth, then one of the switch mode power supply boards that are on the market that take say a 50V DC input and have an output controllable over 0-50V up to 5A  250W.

https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5574900467&campid=5338252492&mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2F332472222974%3FrmvSB%3Dtrue



L192

[konehead]

Hi L192 and everyone
Those switched mode power supplies look good very cheap too....I am not familiar with them actually so can only say they look really good sorry.....
You know, Pierre says right there plain as day he wants us to help him improve it, and  he wants us to try doing it too ourselves....this is very rare for an inventor/builder who has constructed a LOOPING device with over a thousand watts leftover to say something like this!

So lets help all we can, in return we will learn ourselves the principle and method as we study just how it does work....understanding why it works is secondary to fact that it does, but it would be very good to understand fully too of course...

And I think anyone who can explain "for sure" to Pierre logically and plainly how it works to him, he would be most grateful fir this,  as he says he wants to understand it!!  (I don't know how myself so cannot explain but can only say it is like a cat chasing its own tail and never catching it but I don't know really)....

Anyways here are suggestions:
1) to clean up the AC, just put all power created into DC caps and run pure sinewave invertor (very simple already suggested before by quite a few on his youtube channel)
2) 1 to 1 transformer on the output (Gary Porters suggestion) and the core material of it will clean up the AC stuff....Gary just suggested this on part4 youtube video
3) AC filters and caps on the choppy spikey AC created ( could get very tricky and complicated)

So that is  suggestions on the AC clean up plan...

For switching, obviously get rid of the mechanical relays, they will not last too long anyways, so  I would suggest using solid state mosfet relays, as you can simply fire them one at a time, with overlapping time periods too, whenever you want to do it with a signal from 3 to 36V dc at the gates/triggers....probably they can hook directly to arduino without the transistors between, but not sure about this...
when you work with mosfets there is always that problem of the gate "sharing" the ground/source like N channel types for example and you cannot easily string them together with overlapping ON times but with solid state relays there is no problem like this....maybe Pierre used those blue  relays because of the overlapping periods he just revealed to us....and to do it mosfet-switching would of been a huge headache....but with the solid state mosfet relays no problem you can hook them up just like the blue relays also the backemf/recoil can be taken out of them just the same as if regular mosfets so there is my measly two cents on switching improvements.  Downside is those SS relays are going to cost maybe 5 bucks apiece getting them cheap in quantity and they are fairly bulky too....some of them are slow switchers but not all of them.... ones rated for 60VDC should switch pretty quick....

[listener191]

Pierre's relay H bridge doesn't have the lower set of diodes
If the lower switches are turned off completely the coil energy will not be recovered, as there will be no current path.

L192

[listener191]

See attached.

Each board is a dual H bridge.

2A per bridge up to 35VDC (46VDC if you remove or replace the VCC cap).

5V logic drive directly from arduino.

Over temperature protected.

Supports current limiting.

Outputs can be paralleled for 3.5A max.

35 USD  for 20 pcs.

L192

[gyulasun]

Dear L192,

Would mind editing this post of yours and replace the ebay link with this shorter link which goes to the same ebay offer:

https://rover.ebay.com/rover/1/711-53200-19255-0/1?ff3=4&toolid=11800&pub=5574900467&campid=5338252492&mpre=https%3A%2F%2Fwww.ebay.com%2Fitm%2F332472222974%3FrmvSB%3Dtrue

I ask this because sometimes the too long links cause the same problem the attached pictures do when their horizontal pixel number is > 900 or so. 

Thanks.

As you would not want to use Pulse Width Moduation on the Arduino pulse outputs, to maintain overlapping pulses, I would suggest using a switch mode power supply with a variable voltage and current limit.

This would also allow you to eliminate the large current limit resistor, as the switch mode power supply would limit the current to its maximum automatically, avoiding waste of energy in the resistor.

The switch mode power supply could be a 115VAC input chassis unit, or bench supply unit, or to reduce cost, use a low voltage winding on the rotor, rectify and smooth, then one of the switch mode power supply boards that are on the market that take say a 50V DC input and have an output controllable over 0-50V up to 5A  250W.

-----

L192