Second Stage Joule Thief Circuits

[Groundloop]

@All,

Attached is a zipped file containing the newest software for the feed back circuit.

The new software has reduced the feed back circuit current usage.

Groundloop.

[mscoffman]

@All,

The new software has reduced the feed back circuit current usage.

Groundloop.

Groundloop;

Sort of as advertising...What is your opinion; "Is the JT showing overunity?"
Have you tried a normal electrolytic cap. in place of the Bcap. Does the
Bcap draw out more overunity energy from the JT then it would without it?
Does a non-rechargable (carbon/zinc) AA battery work Ok with your circuit?
Finally, can a large normal electrolytic cap. work in place of the battery?
(with inclusion of push-to-start switch before the battery).

I'm asking these questions since you presumably had some time to see
the JT in action. Thank you.

:S:MarkSCoffman

[Groundloop]

@mscoffman,

It was not until recently that I got the feed back circuit to run OK.

So the testing has just started. I have also worked on getting down the
current usage to the feed back circuit. Right now it is 7mA from the input
and that is WAY to high. My goal was less than 1mA usage. The PIC16F88
is a Nano Watt device, so I'm working on a new software that uses sleep
to get the power usage down. Unfortunately the pic mcu requires an external
clock crystal of 32KHz to be able to enter a low power sleep mode. So I'm
planning to try that out by soldering the xtal on the underside of the pcb.

I have tried a normal (16000uF 25V) electrolytic cap on the output
and the process was under unity.

I have not tried a normal not rechargeable battery on the circuit.
I have not tried a normal electrolytic capacitor on the input to the circuit.

Now to you question:
"Does the Bcap draw out more overunity energy from the JT then it would without it?"

That is what I want to find out, but first the current usage of the feed back circuit MUST be
tuned down to approx. 1mA or less draw from the input battery.

Groundloop.

[mscoffman]

@mscoffman,

It was not until recently that I got the feed back circuit to run OK.

So the testing has just started. I have also worked on getting down the
current usage to the feed back circuit. Right now it is 7mA from the input
and that is WAY to high. My goal was less than 1mA usage. The PIC16F88
is a Nano Watt device, so I'm working on a new software that uses sleep
to get the power usage down. Unfortunately the pic mcu requires an external
clock crystal of 32KHz to be able to enter a low power sleep mode. So I'm
planning to try that out by soldering the xtal on the underside of the pcb.


Groundloop.

Thank you again for your comments. Sounds like my thinking is getting slightly ahead
of the situation here; Sorry. Yes, I was considering a dual clock solution for
the microcontroller so it could coast at very low power until it found a specific
condition then speed up to 20Mhz or whatever to resolve it.  Definitely
power factoring. Your work has been excellent so far. Please keep some
of these questions in mind for future comment, if you will.

:S:MarkSCoffman

[kooler]

hello
no high voltage section in this forum.. man what gives..??
this isn't a joule theif .. but it was once the second stage to my jt..

the first video is a bulb lite.. nothing kool.. but it is bright enough

http://www.youtube.com/watch?v=HoLDlTv5YGw

and the second video is just high voltage fun..
but be warned that it is high voltage and could kill.. trust me!!!!!!

http://www.youtube.com/watch?v=n04977vS6b4

stay safe and have fun

robbie