Joule Thief

[innovation_station]

a friend passed me this link just incase someone cares.....


http://api.ning.com/files/ebDSQQpw7fKImqre8XK2nb7Om0uhoBOmnd79lSxK9Gajeeojcc3ULdw*DXTR3tw6ZD3MIFghAYscWho9RBkXTgTMtpGZBrZx/clifhigh22march2009.mp3

it was wild to say the least ...   ARE OUR THOUGHTS REALLY AND TRUELY OUR OWN .... OR ARE WE JUST BORROWING THEM   LOL

hence me posting it ..

ist!

so it gets more wilder yet .... 

so i took a few readings .... im haveing a hard time to match up the wires ...    but i find out lol  does it matter !?!?!?!?!

lol

i can read as high as 3.5vac ac at 4 ma / wire ...+/-  and now this means .... well btw no diodes ..

lol

MY OUTPUT APEARS TO BE 10.7KHZ   so the cheepie meter says ... it seams to build up ......   hummmmm

[hazens1]

I made a coil out of the other 1inch toroid from Goldmine http://www.goldmine-elec-products.com/prodinfo.asp?number=G6683 to compare to the High Perm toroid. Wasn't able to fit the 10-10-80 configuration on it since the High Perm has a larger inner diameter, so I had to manage with a 7-7-70 (Base-Collector-Pickup). Will have some pictures up when I get a chance. I tuned the pot (0-10k ohm 15 turn pot) for max voltage from the pickup coil and ended up with about 500 ohm resistance. This gave me 250 rectified volts with a draw of 125ma with no load from a single rechargeable AA at about 1.35 volts. I can charge a 200 volt 22uf cap for less than 1 second and get a massive spark shorting out the capacitor after charging. I can light all my LEDs (about 20) from the pickup coil using a 10k ohm resistor dropping the draw down to 20ma for the first LED and dropping about 0.5ma for each LED added in parallel. With the 10k ohm, I get 75 volts rectified with 20ma no load draw. Since I have 5 of these, I'll start trying different configs with them. The performance and efficiency seems to be a little bit better than the High Perm but pretty close to the same values. With a resistor range of about 300-1000 ohm, both toroids sing an audible sound. Max draw on both toroids was about 350-400 ma at about 300 ohm resistance into the Base. I can drop the draw down to less than 1 ma using a 0.1uf cap in parallel to the 10k ohm resistor. LEDs are not very bright at this draw, but still put out decent light. Hope all this info helps.

[xee2]

@ hazens1

Well done. Thanks for providing so much information. Is this what your 1 ma circuit looks like?

[hazens1]

@ hazens1

Well done. Thanks for providing so much information. Is this what your 1 ma circuit looks like?

Well done! That's exactly what I have minus the 10uf on the battery, but that can only improve the efficiency. Are you using an application to make diagrams or cut and pasting them?

[xee2]

@ hazens1

The 10 uF cap will not make much difference at 1 ma battery drain, but it will help when you are draining large currents from the battery with a capacitor across the base resistor. The cap across the base resistor should also reduce the battery drain when getting 200 volts out. My diagrams are cut and paste using Serif DrawPlus. Please keep posting your results.