Self Running Micro TPU, with closed loop.

[abassign]

You excuse a small note:
If they are inserted more LEDs it doesn't change a lot. The circuit of EMDevice is regulated in automatic way with the current. Simply the LEDs will be less bright. And as verified in my experiment with 12 LEDs, the time of operation is identical, only that the LEDs are less bright.

[Motorcoach1]

@ Bruce and Manix and Stephen - I have been observing this thread  If possable change the Barium ferrite rod to Barium titanate , these have special properties in the Electrict feild. this coil may inhance the output if the coils due to the natural power of this matreial. Acctualy you can add a charge to the rod or ring and let set over a piord of a week or two to stablize. ounce you do this the rod or ring will nevr lose the charge. I have been studying the Swiss machine with much enthuseasium and this looks promiceing too.    good luck and have fun-  oh by the way i use a small bycycle LED safty flasher to drive my coil and the best part it has 5 settings on a premade board I bought from Wallmart 9.95.

[4Tesla]

@btentzer
Thanks for verifying the trigger coil.  I still don't understand how it works though.  I have attached the modified schematic.  I'm not sure what type of capacitor would work best.  Are you using iron wire for the coils?

@wattsup
Try putting a current limiting resistor in series with your LED and see if that keeps it from blowing up (470 ohms).  Are you pulling the capacitor out of the circuit to charge?  If not, that may be the problem.

@all
Edit: Is the trigger coil recharging the capacitor in the RC circuit?

Thanks,
4Tesla

[acerzw]

<removed>

[Bruce_TPU]

@4Tesla

Thank you very much for posting your schematic.  I have been traveling all day, and I am very tired.  Tomorrow, I will try to hunt down all of what is needed to try it.  Also, please calculate what is needed to bring it down a touch further, to 7.23 Hz and/or 7.3 Hz, and I will get what I need to try that also.  This is very important to me to try your 7.5 and my 7.23 or 7.3 if we have to round it up.

Also, I am using 20 gauge, copper magnet wire on my coils.  I am buying some iron wire, insulated next week and also some nickel wire insulated to wind cores.  Also my other parts arrive next week, and I can't wait! 

@ Wattsup
The phone number to E.P.O in Houston, Texas, where I found the ferrite for $1.99 each is 1-281-286-5510.

It took me several times, winding different ways, at first, before it worked.  Further proof for me that the coil has interaction in the circuit.

I have just kicked mine off, at first with 5 volts off the board and later a 9 volt battery, because I wanted to be portable.  I have not smoked any LED's.  Pay special attention to which wire I said goes where to the transistor.

@ All
A reminder that no one here claims that this is OU.  The goal is to learn, experiment, have fun, and see if it can be pushed that way, and then scaled up.  I am sorry I do not have a working scope at this time.  It is frustrating for me as well.  But, having started our at 4 minutes run time, with no battery or power hookup, and then making several changes and tunings and increasing the load and now having a run time of 29 minutes, 30 seconds, I do see a little progress.  Looking at the LED's, they seem to be the same brightness with two, as with 6, as with 8.  The pulse starts to slow down during about the last 3 to 4 minutes.  And believe me when I say I have watched enough blinking LED's to last a life time.  SM said to study toroids and learn their strange principles.  I am learning a lot.  Especially how important a fast transistor is and what a HUGE difference it makes on this type of circuit.  I now think that is why he wanted us to start with tubes.  I think tubes as transistors is now what he might have meant.  I would like to test a "super fast" transistor.  I would bet money if would give more 'on' time.

@ Liberty
I am going to retry the Darrington.  I will hook it in reverse, like my transistors are reversed from the original circuit.  Talk about strange.  That is why I think it did not work last night.

Holiday Cheers to All,
Bruce