Second Stage Joule Thief Circuits

[sirmikey1]

The JT evolves...

"Where's the Beef?" 
http://www.youtube.com/watch?v=aISkVvi5iI8

Thanks,
M

[Tassie Mike]

Hi Ladies and Gents!

Just a thought about circuits, Please draw your own with ruler and good clean high contrast medium, sign it, scan it and then use a jpg to post.

So many difficulties with various computer drawings that will lead to mistakes that cost replicators time energy frustration and sometimes the feeling that they have been conned.

Cheers, don't stop innovating, specially you Jeanna!

Cheers all
Mike

[NerzhDishual]

Hi JT people,

Sorry, I have not read the zillions pages of the JT threads.
So, this could be off topic...

I have modified the Gadgetmall's 1.5 volt JT heater circuit:
http://www.overunity.com/index.php?topic=8334.0
Thanks Gadgetmall.

I can light 4 bright leds (or even more) and charge another AA batt.
I mean: the voltage of this (almost dead) second batt is increasing...
ex: 11.5 Volts to about 13 volts.
The voltage of the input batt is decreasing...
ex: 12.7 volts to about 12.5.

I will try to swap the batts and to self charge the input bat.

-------------------------------------------------------
Else:
How to measure the AL of a toroidal coil ?
Just wind few turns (N= 15 to 20).
Use an LCR meter to measure the inductance (L) of this coil.
Use this formulae L(nano Henries) = N*N * AL.
You will get a correct approximation of AL.

Very Best

[mscoffman]

...
I can light 4 bright leds (or even more) and charge another AA batt.
I mean: the voltage of this (almost dead) second batt is increasing...
ex: 11.5 Volts to about 13 volts.
The voltage of the input batt is decreasing...
ex: 12.7 volts to about 12.5.
...

@Nerzh,

By this quote do you mean: (A) "I use the exact same circuit for 12Volt
batteries"  or (B) "I placed the decimal point wrong; ie 11.5 = 1.15Vdc on
1.5volt battery"?

A) would be very hard on the Leds, IMHO.

[NerzhDishual]

Oops ! Yes, you are right. Sorry.
I meant 1.xxx volts the decimal point was misplaced.
Sorry again.

Very Best.