Back-Popping with Arduino

[ZPDM]

This is pretty much the first thing I wanted to do when I heard about so called "free energy". Well it is not "free", but this is a cool battery charger. I've made the vids and will post in a day or two. Just to summarize, I am capturing the radiant from a coil pulsed with Arduino, back-popping the cap back to source and the source is a three 6V battery common ground set-up providing 6V. Circuit diagram/Arduino code if any interest.

Guess my centrifugal go-cart is back on the back burner.

[Ed_Morbus]

ZPDM
yes have you diagram and Arduino code ?

[ZPDM]

ZPDM
yes have you diagram and Arduino code ?

Ed,

Called my bluff, give me a day or two to try and get the circuit diagram to you. Glad you are interested. In the meantime here is the video documenting the build.

[Ed_Morbus]

Yes i have watching your video

[ZPDM]

Here you are Ed,

Not positive the circuit diagram is right, should be though, am trying to learn "Fritzing"software. The code compiled and is working fine as I write.



Here is the code



Z

[Ed_Morbus]

ZPDM Thank you

[ZPDM]

Been moving backwards on this at warp speed for a day or two. First my Linux machine crashed ... again. At least it wasn't the hard drive this time it just boots up to a black screen, sort of odd, guess you get what you pay for, so I reinstalled linux. When this circuit contraption was working it seemed to have a COP right somehwere around 1, which I imagine is around what you would see if you just pulsed a coil and shot the spike to a different battery. So next I wanted to try and quantify the impact of the back popped spike. So I ran it with a super cap first w/o backpopping then with ... and saw no difference, perhaps it is ghosting. So then I backed up further and found I couldn't get any cap past ten volts just popping out to another battery. So something is messed and I don't know whether the back pop was ghosting or not. I think it "has to be" (i.e. I don't know, maybe) the transistor. There just isn't that much on this side of the opto and I have video showing the cap going to 18V and discharging. I am out of transistors so I need a run to radioschack. So short version, it isn't running right now, I don't know why and I don't know if I was successfully packopping in the first place or not. I'll see if I can't get it sorted out. Also the diagram has a diode pointing the wrong way, but it should be clear from the video you just want blocking diodes on both ends of the coil.

Morbus, you were enthusiastically on to this right from the start so with my current obstacles all I can say at the moment is I really, really look forward to your commentary/video on circuit replication.

[Ed_Morbus]

ZPDM
can you make new schematics ?

[ZPDM]

ZPDM
can you make new schematics ?

Morbus,

Don't understand abot "schematics". Both diodes in blocking orientation as mentioned, Can you clarify further? Just make sure both diodes are pointing to capture the spike, it doesn't work any other way, very easy to see once you get started actually working.

[Ed_Morbus]

Don't understand this

[BobZilla]

ZPDM,
Thanks for posting your work. I have not tried a circuit like this but I have thought about trying it. I wanted to make a suggestion to you however because I have done a lot of work using aurduino for my switching.

Consider using a FET instead of the BJT transistors. You do not need to opto-isolate them because of the nature of the field effect and also as a result they consume VERY little in switching cost. I have tried out many and the ones I like the best are linked below. The gate will switch just from the 5v signal off the aurduino.

link:
http://www.mouser.com/ds/2/196/Infin...-EN-359664.pdf

Here I used them on a cap dumper:
http://www.energyscienceforum.com/sh...ll=1#post20807

And here on another charger I built:
http://www.energyscienceforum.com/sh...ll=1#post15824

Nice work man and if you don't want to bother with it that's fine ;-)

*EDIT*
One thing to mention is that if you use FET's with the aurduino you should put two resistors in the circuit. Put a 10k Ohm from gate to ground, and 150 Ohm from gate to the aurduino signal. The first one acts as a pull down for the off time and the second is not always necessary but in various applications I started using it to protect the aurduino, better to have it than not.

[Gary Hammond]

Hi Paul,

...... Also the diagram has a diode pointing the wrong way, but it should be clear from the video you just want blocking diodes on both ends of the coil.

I thought maybe that's what happened. I couldn't figure out how it would work the way you had it drawn. Thanks for the clarification!

[ZPDM]

ZPDM,
Thanks for posting your work. I have not tried a circuit like this but I have thought about trying it. I wanted to make a suggestion to you however because I have done a lot of work using aurduino for my switching.

Consider using a FET instead of the BJT transistors. You do not need to opto-isolate them because of the nature of the field effect and also as a result they consume VERY little in switching cost. I have tried out many and the ones I like the best are linked below. The gate will switch just from the 5v signal off the aurduino.

link:
http://www.mouser.com/ds/2/196/Infin...-EN-359664.pdf

Here I used them on a cap dumper:
http://www.energyscienceforum.com/sh...ll=1#post20807

And here on another charger I built:
http://www.energyscienceforum.com/sh...ll=1#post15824

Nice work man and if you don't want to bother with it that's fine ;-)

*EDIT*
One thing to mention is that if you use FET's with the aurduino you should put two resistors in the circuit. Put a 10k Ohm from gate to ground, and 150 Ohm from gate to the aurduino signal. The first one acts as a pull down for the off time and the second is not always necessary but in various applications I started using it to protect the aurduino, better to have it than not.

Thx Bobzilla,

That's a neat suggestion re FET and I never thought about the optoisolator like effect built into the FET. Just got back from Radioshack with new transistors so first I want to get the thing working again. This is the sort of thing where a little less switching cost might make some difference. I want to compare it to just dumping the spike to a cap then to a different battery, is it working as well with the back popping, (at this point make sure it is working at all) then also try and look at is the three battery set-up actually improving things or just making things more complicated? As with a cap dump set-up, charging a battery from what I am calling the Tesla switch position, should be a conventional sort of pulse charge and you shouldn't have to "worry" about negative energy effects on the battery, just don't know how it compares yet with a more simple cap dump set-up. After that maybe I will try and build the thing with MOSFETS, I've done stuff with MOSFETS before but found them finicky and was doing paint-by-numbers set-ups, appreciate the gate/ground resistor explanation. Will be sure to check out your videos and thanks for the info.

[ZPDM]

Hi Paul,



I thought maybe that's what happened. I couldn't figure out how it would work the way you had it drawn. Thanks for the clarification!

You're welcome Gary, appreciate your taking a glance at the circuit. And to you and Morbus, I'll have to see if I backed up the fritizing circuit before I reinstalled Linux, I'll try and get a corrected circuit diagram out at some point but for the time being just want to play around with the circuit for a bit. Also before I forget, here is the video I said I would post (in my video) explaining how to use an optocoupler with a transistor. https://www.youtube.com/watch?v=-gkrzPGqjOg

[ZPDM]

Thought these three brief videos might be of interest. It starts off looking at using Arduino to explore the radiant/inductive spike off a discharging cap then morphs along a bit.