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Overunity Machines Forum



Joule Thief 101

Started by resonanceman, November 22, 2009, 10:18:06 PM

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Magluvin

#1350
April 01, 2016, 09:47:22 PM
Ok, the circuit works with 3 turns.  Had to try it before I put the scope pins in.  But, when I first tried it it didnt work.  Looked at it and had one of the windings connected backward. No biggy.

So Ill put the scope pins in and try to get core resonance.

Mags

Magluvin

#1351
April 01, 2016, 11:05:29 PM
No resonance that I can find so far. Will work on it more tomorrow. Gunna do some mechanical resonance work for a bit here and hit the sack

Mags

TinselKoala

#1352
April 01, 2016, 11:16:13 PM
 :o

(LED is a green superbright, Vf ~ 2.48V (fluke 87-iii))

picowatt

#1353
April 01, 2016, 11:44:33 PM
Quote from: TinselKoala on April 01, 2016, 11:16:13 PM
:o

(LED is a green superbright, Vf ~ 2.48V (fluke 87-iii))

TK,

No fair!  I thought we were just supposed to guess!!

A bit more vertical resolution of the CSR trace might have been handy (more gain or larger CSR).  However, it looks like there is about 4ma flowing just prior to the rising edge.  Correct?

As usual, your right on top of things...

Did your LED light up noticeably?

PW

tinman

#1354
April 01, 2016, 11:54:20 PM
Quote from: TinselKoala on April 01, 2016, 11:16:13 PM
:o

(LED is a green superbright, Vf ~ 2.48V (fluke 87-iii))

TK

Now remove the 1k resistor,and try again.

Brad
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