Second Stage Joule Thief Circuits

[guruji]

@guruji,

I'm trying to build a circuit that will discharge a big battery capacitor to a load when the
capacitor has reached a preset voltage level. The circuit should also feed back some power
from the battcap to the input AA battery.

Alex.

Hi Groundloop first of all sorry about this scheamtic turned sideways try to see it ;anyway by print it. I don't know if this circuit would be of any help to what you've building.
The text says that when the cap is full it is drained to the battery.
Thanks

[Pirate88179]

Alex:

Wow, you are really working hard on that circuit.  Great work man.

I seem to remember a youtube video a while back done by THEDAFTMAN where he came up with a low power switching circuit to swap out the run and charge batteries from his Bedini when they were full.  I think it was pretty efficient but, I know he had more power to work with.  If you think it might help and possibly give you some ideas I can locate it and post a link here.

Keep up your great work on this.  I only wish I knew enough to be of more help.

Bill

[topothemtn]

Welcome back Bill. So good to see you here again. You do such a good job we really would have missed your smiling face.

Dick

[Groundloop]

@guruji,

Thank you for posting that circuit drawing. Yes I have tried that circuit. It works
good for all capacitor voltages above 65 Volt. What I'm trying to do is to switch
2,6 Volt. I'm also trying to make a switch that uses no power when inactive.

Bill,

Good to see you back. :-) I have been working on this circuit two day now and need a rest.
I have some ideas and will be back later on.

Alex.

[gadgetmall]

Thank you Alex . Get some rest . I am Trying to make a better Jt for faster Charging .
Get some rest .
Albert