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Author Topic: Is that a joule thief?  (Read 45739 times)

Offline e2matrix

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Re: Is that a joule thief?
« Reply #15 on: April 23, 2013, 07:01:31 PM »
e2matrix,

I finally got time to download and study the data sheet for your 2SC5778 and you can NOT use that
transistor in the Figure-8 circuit. The reason is that the 2N5778 has an internal diode over the collector
emitter wires. The transistor also have a internal resistor between base and emitter. You need to find
a high voltage power NPN transistor that does not have any internal "extra" components.

GL.


Thanks Groundloop.   I do see that extra stuff now in my datasheet.  This transistor is working now in a battery charger circuit posted by member rfnreynders on Laserhacker.com and on energeticforum.com and seems to be one of the few I've tried works good in that circuit for that 'big spike' desired for desulfating.    I've got a 2SC2555 that looks like it might work for the figure 8 circuit but my datasheet doesn't show any internal configuration -- so I'm assuming it doesn't have any extra 'stuff'.   

Free Energy | searching for free energy and discussing free energy

Re: Is that a joule thief?
« Reply #15 on: April 23, 2013, 07:01:31 PM »

Offline Groundloop

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Re: Is that a joule thief?
« Reply #16 on: April 23, 2013, 09:14:38 PM »

Thanks Groundloop.   I do see that extra stuff now in my datasheet.  This transistor is working now in a battery charger circuit posted by member rfnreynders on Laserhacker.com and on energeticforum.com and seems to be one of the few I've tried works good in that circuit for that 'big spike' desired for desulfating.    I've got a 2SC2555 that looks like it might work for the figure 8 circuit but my datasheet doesn't show any internal configuration -- so I'm assuming it doesn't have any extra 'stuff'.

e2matrix,

I did download the data sheet for the 2SC2555 and the transistor is OK to use in the Figure-8 circuit.

( My JT battery voltage is now [23.04.2013 2100] down to 2,81 Volt. That is a drop of 0,02 Volt in 6 hours. )

GL.

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Offline Groundloop

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Re: Is that a joule thief?
« Reply #17 on: April 24, 2013, 06:48:57 AM »
My JT battery voltage is now [24.04.2013 0645] down to 2,79 Volt. That is a drop of 0,02 Volt in approx. 10 hours.
LED still bright enough to be used as a night light. Oscillator frequency at 465KHz.

GL.

Offline Groundloop

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Re: Is that a joule thief?
« Reply #18 on: April 24, 2013, 04:45:05 PM »
My JT battery voltage is now [24.04.2013 1645] down to 2,77 Volt. That is a drop
of 0,02 Volt in 10 hours. LED still bright enough to be used as a night light.

GL.


Offline e2matrix

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Re: Is that a joule thief?
« Reply #19 on: April 24, 2013, 05:47:09 PM »
Thanks again Groundloop.   Sounds like you've got a finely tuned JT there.   Thumbsup smiley here  (hint hint Stephan)

Free Energy | searching for free energy and discussing free energy

Re: Is that a joule thief?
« Reply #19 on: April 24, 2013, 05:47:09 PM »
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Offline Groundloop

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Re: Is that a joule thief?
« Reply #20 on: April 24, 2013, 06:46:03 PM »
Thanks again Groundloop.   Sounds like you've got a finely tuned JT there.   Thumbsup smiley here  (hint hint Stephan)

e2matrix,

This JT circuit is inspired by Dr. Stiflers work on the Spatial Energy Coherence (SEC) Exciter circuit.
Thanks goes to Dr. Stifler. I have two tuning components in my version of the circuit. The frequency
of the oscillator is set by C1 and L2 at the base of the circuit. And the oscillator frequency is very
constant over a wide range of input voltages.  R1 (1M Ohm) provide the voltage bias to get the
oscillator going. The L2 coil is flat on the circuit board and the L1 coil is mounted vertically. This means
that there is just a small L1 to L2 coupling. The end result is a oscillator that can be run on a wide
range of input voltages with a relative constant light output in the LED. The LED is also mounted
directly over the L1 coil so that the current through the LED is channeled back to the positive rail.
This will give a oscillator that uses very little current from the input. The LED I'm using is a ultra bright
blue 10mm diameter LED. The L1 and L2 coil can be found on the PCB of CFL lamps. All in all a funny
circuit to play with. I highly recommend people to study Dr. Stiflers work on the Spatial Energy Coherence
(SEC) Exciter circuit.

GL.
« Last Edit: April 24, 2013, 09:09:26 PM by Groundloop »

Offline Groundloop

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Re: Is that a joule thief?
« Reply #21 on: April 25, 2013, 06:22:13 AM »
My JT battery voltage is now [25.04.2013 0620] down to 2,66 Volt. That is a drop
of 0,11 Volt in almost 14 hours. LED is no longer bright enough to be used as a night light.
Seems that the batteries is now close to almost no charge left. Will keep the circuit running
until LED goes fully dim to see how low voltage this circuit can run on. Oscillator frequency
is now at 467KHz.

GL.

Free Energy | searching for free energy and discussing free energy

Re: Is that a joule thief?
« Reply #21 on: April 25, 2013, 06:22:13 AM »
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Offline Groundloop

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Re: Is that a joule thief?
« Reply #22 on: April 25, 2013, 03:46:02 PM »
My JT battery voltage is now [25.04.2013 1545] down to 2,61 Volt. That is a drop
of 0,05 Volt in approx. 9 hours. LED is very dim now, barley any light, but still visible.
Oscillator frequency is now 471KHz. Amazing stable during the various input voltages.

GL.

Offline Groundloop

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Re: Is that a joule thief?
« Reply #23 on: April 26, 2013, 07:12:03 AM »
My JT battery voltage is now [26.04.2013 0645] down to 2,55 Volt. That is a drop
of 0,06 Volt in 15 hours. LED light is still visible, but very dim. Oscillator at 474KHz.

GL.

Offline TinselKoala

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Re: Is that a joule thief?
« Reply #24 on: April 26, 2013, 01:20:22 PM »
Hi GL very nice work as usual.....

I love your spectrum analyzer display. What instrument is that from?  My lab is sorely lacking in that regard; I have been trying to obtain a spectrum analyzer plugin for my HP180a for some time now but just can't afford it.

I'm a little scared of your copyright notice.... May I please have permission to copy that schematic image of your Oscillator to my hard drive, for my personal use only?    ;)

When it's finally too dim to see, I wonder what would happen if you warmed the batteries gently.....

Cheers, keep up the good work...
--TK

Free Energy | searching for free energy and discussing free energy

Re: Is that a joule thief?
« Reply #24 on: April 26, 2013, 01:20:22 PM »
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Offline Groundloop

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Re: Is that a joule thief?
« Reply #25 on: April 26, 2013, 02:00:19 PM »
Hi GL very nice work as usual.....

I love your spectrum analyzer display. What instrument is that from?  My lab is sorely lacking in that regard; I have been trying to obtain a spectrum analyzer plugin for my HP180a for some time now but just can't afford it.

I'm a little scared of your copyright notice.... May I please have permission to copy that schematic image of your Oscillator to my hard drive, for my personal use only?    ;)

When it's finally too dim to see, I wonder what would happen if you warmed the batteries gently.....

Cheers, keep up the good work...
--TK

TK,

Yes, you can copy my circuit drawing to your hard drive. :-)

The spectrum analyzer is from my Icom PCR-1000 receiver.
(Icom has also made a new model called PCR2500).
The program I use is freeware and is called Talk PCR.
See here: http://www.m0kgk.co.uk/pcr1000.php

I will try to warm the battery when the LED goes out. :-)

GL.


Offline Groundloop

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Re: Is that a joule thief?
« Reply #26 on: April 26, 2013, 03:45:02 PM »
My JT battery voltage is now [26.04.2013 1545] down to 2,51 Volt. That is a drop
of 0,04 Volt in 9 hours. LED light is still visible, but very low.

GL.


Offline Groundloop

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Re: Is that a joule thief?
« Reply #27 on: April 26, 2013, 09:49:10 PM »
My JT battery voltage is now [26.04.2013 2145] at 2,51 Volt. That is a drop
of 0,00 Volt in 6 hours. LED light is still visible, but very very low. The oscillator is
still running happily at 477KHz. Question now is, will the oscillator keep running
on the "battery self charge effect" now that each cell in the batteries is depleted
down to  0,2092 Volt? Time will tell........................

GL.

Offline forest

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Re: Is that a joule thief?
« Reply #28 on: April 26, 2013, 10:29:14 PM »
Try how long does it run from a farad capacitor or smaller....  :D

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Offline Groundloop

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Re: Is that a joule thief?
« Reply #29 on: April 26, 2013, 11:01:16 PM »
Try how long does it run from a farad capacitor or smaller....  :D

forest,

Yes, I will try that also. But first I want to see how long the oscillator will keep
running on the two depleted batteries. It might take some weeks, it may take
longer. I think this is an important test because I have never been able to
fully drain a battery to zero volt by shorting the battery.

GL.

Free Energy | searching for free energy and discussing free energy

Re: Is that a joule thief?
« Reply #29 on: April 26, 2013, 11:01:16 PM »

 

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