Joule Thief

[gadgetmall]

@Jadaro,
Ah yes.
We were typing at the same time when we made our previous posts. I was still typing a bit after you. Our ideas have a lot in common. I love it when this happens.

I am not talking about letting the flyback get to the transistor. This is entirely taken from the secondary and after it passes through the rectifier. (I even stuck it on a separate breadboard.)

This is not where I am going ultimately. I just wanted to see if the pulses could be changed into a good useful waveform and to my delight they can.

I was thinking I needed to study up on the inductors or toroids you have been using, since your approach may be the very thing this needs to finish up and work.

My 7-7-68 from yesterday gives me 85v on one secondary wire, and 22volts on the other. This ought to give me plenty to play with. But not leds. I have no desire to lose any more of them on this. I am looking for some kind of thing that will work on 30 to 60 volts ac. Of course, there is nothing, is there? Why would there be?

Thank you for your input. It has been most helpful.

jeanna

jeanna and others . They are selling strings of leds at big lots and walmart ,kmart and various places that sell patio and outdoor stuff . they are not christmas leds but are now sold as patio lights and next will be halloween light . I saw strings of whites for 8 dollars . I havent blown any yet . AND as a bonus there are several spares in each pack of lights to play with for little Jts
Gadget .

[gyulasun]

@all

Would anyone happen to have a link to the PDF that was posted here. It was about the navy and magnetic amplification I can not seem to find it.

Thank you!

@altrez

Here is a link to the Navy training course and Module 8 includes magnetic amplifiers from PDF page 131.

http://www.tech-systems-labs.com/navy.htm   

rgds, Gyula

[Mk1]

@all

Magnetic Amplifiers U.S. Navy 1951:
http://www.overunity.com/index.php?action=tpmod;dl=item204
You will need DjVu Viewer to open the document inside the zip file.

Magnetic Amplifiers Principles and Applications1960:
http://www.overunity.com/index.php?action=tpmod;dl=item205

I just found it.

Mark

[Mk1]

@ist @all

I am not sure i come to the same conclusion as you do , the reason it light the led in both polarity is because the pickup coil winding goes in both direction , on that design if you have a pickup coil in one way it will only light the led in one way two .I think in one direction it works on induction only . That being said the important thing to see here is that you can get power out without creating a counter wave that kills efficiency, not having a scope , its really hard to confirm , but i tough its important to look at.

http://www.youtube.com/watch?v=Jiodkjo9hpk   ( this is ist video)

Mark

[jeanna]

jeanna and others . They are selling strings of leds at big lots and walmart ,kmart and various places that sell patio and outdoor stuff . they are not christmas leds but are now sold as patio lights and next will be halloween light . I saw strings of whites for 8 dollars . I havent blown any yet . AND as a bonus there are several spares in each pack of lights to play with for little Jts
Gadget .

Good.
I don't have a big lots near here but there is a walmart.

I tried out the 65 cent each bright white leds from allelectronics. These are older and not as bright as the new ones, but still plenty bright especially when 5 are put together in parallel and put into a used-to-be frosted edison bulb.

Thanks for the tip,

jeanna