Self Running Micro TPU, with closed loop.

[plengo]

@Groundloop,
super dumb question: If I have a pulsating device that is delivering about 40ma for 1/2 hour and it goes down to 39.5ma in the next 1/2 then 39ma in the next and so forth, how long will it deliver 150ma?

I have this new thing now that is delivering that from a 9v battery. I want to know how long it should run until all the power is gone. I really appreciate your knowledge.

[edit: I forgot to give the most important: 20hz frequency at 10/90 duty-cycle. Reason in on the video http://www.youtube.com/watch?v=nii18Imr-A8]

Fausto.

[hartiberlin]

Hi Fausto,
you don?t see the High Voltage spikes, cause they are "sucked in"by the battery capacitance.

If you would redraw your circuit like a normal circuit diagram with the coils at the collector
of the PNP  transistor you would see it better.
The small spikes are still visible with your scope shots, but if you would
reconfigure your circuit you would blow your transistors with the spikes...
Maybe you did already blew your MOSFET with it and this is why only
this "destroyed" MOSFET from your 1st circuit works with it and not many more ??

[plengo]

@hartiberlin
very interesting hartiberlin. I managed to blow 3 mosfets. The ones that are running are the ones that I did not scrow up. So that explains why I got the mosfets and in 2 seconds they stopped working and I was wondering how is it possible with dead batteries with about 3v or less.

Thanks for the info.

Fausto.

[hakware]

Okay, I'm Pretty bummed out. After a long day putting out some fires at work I came home to check on my little units battery voltage and see how it was coming along. Yes the voltage on my unit was still holding out but the LED's are almost so dim that you cant see them. So,  basically the batteries will hold a nice voltage but the current eventually gives out and does not perform any regenerative charging of the battery.

Was about the only thing I thought I had going today, now its not working out very well (sniffle)

[hartiberlin]

Hi All,
if you would introduce a spark gap into the circuit
and use one electrode from gaphite material and
another dissimular metal electrode like copper
you could generate additional charges, that come into
your circuit and be able to charge up your batteries.

This would be the "external" source by using electron clustering
at the spark gap and direct conversion of carbon(conductive graphite)
to generate new electrons as charge carriers and produce external
energy, that comes into your circuit and will charge up your batteries.

Of course this spark gap has to be tuned for maximum
performance,but as in my Newman machine research you will
seeback spike currents, which will charge up your batteries,
if you have the right arc burning at the spark gap excited via
a high voltage BackEMF pulse making the spark jump.

Regards, Stefan.
P.S: I see, that Fausto is already doing something like this
with his burning relay contacts.
but if you will use better contact materials, like copper-graphite
the effect will bemore dramatic and a real charge up.