Joule Thief

[Mk1]

@All that have made a single jt

Take wound a extra wire 2 (if you got 2 times 7 turn = smaller 28 turns)time the number of turns take a smaller gauge wire single strand and connect led to it.

But for better voltage , make a diode bridge i never got less that 14 volts , the reason for the bridge diode is to not sent flow back in the toroid it limits efficiency but without it you can still get more led working.

@pirate

page 82 , Timmy you should like those video to.

[Pirate88179]

@ MK1:

I watched the 1st video of the ones you posted links to. Is a diode bridge the same as I think of a bridge rectifier? (4 diodes)  This makes a lot of sense to me because in the video, he showed the wave form of ac and then after using the rectifier to make dc it now used the power both above and below the base line.  I can't remember if it was Wilby or Xee2 that told me to cut the diode on my Fuji Aa board so I can use the power on both sides.  Now, I understand what they meant.

I am not sure about the first part of your post about adding the extra wire though.  I counted the windings on my standard JT circuits and they have 20 windings bifilar. (10 of each).  One or two of them may have one more or less winding.  This was with 22 ga. stranded wire.  So, what are you saying to do with the smaller ga. wire?  Thanks.

Bill

[Mk1]

@pirate

Ok i want you to ad some more wire try fitting twice the total amount of wire so 40 turns, then use those wire to power more leds there will be as much power in those that in the circuit. even 30 time more.

The last movie on transistor is real nice.

[Pirate88179]

MK1:

OK, I think I get it now.  I take existing toroid JT and as I have 20 windings bifilar, (10 each) I should squeeze in another 10 windings of a smaller gauge and attach those wires to another led....right?  It would be almost like a secondary, but not really.  My guess is that this will light a bunch more LEDs from the same battery and JT circuit.  If this is correct, I will give it a try when I can.  Thanks.

Bill                     PS  Finished the Carlin video.  Classic stuff to be sure.  Again, most young folks won't remember but he was the first comedian on the first show of SNL.  I was in high school at the time.

[Mk1]

@pirate

You are getting warmer more that 10 but 40 turns, I am making 30 volts in a single toroid , and told every one , no body did,
The toroid is transmitting the magnetic pulse to any wire even those not connected to circuit more turns more output, i call it the pickup coil.
You have to do it.

Now you understand finer gauge, and get to next level.