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Author Topic: Mysterious Resonant Circuit  (Read 91324 times)

hartiberlin

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Re: Mysterious Resonant Circuit
« Reply #60 on: July 28, 2008, 06:21:25 PM »
Hi EM,
well done.
Just try to get a bigger toroid core and use bigger coils and core.
This way you could probably scale the effect up into the 10 Watts range hopefully.

I hope you will get a selfrunning device.
Many thanks.

Regards, Stefan.

eldarion

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Re: Mysterious Resonant Circuit
« Reply #61 on: July 28, 2008, 08:10:14 PM »
@EMDevices,

Can you please specify the exact part number or identifying markings of the NPN transistor you were using?  The reason I ask is that since you are not operating it as a conventional transistor, the exact characteristics of the transistor are now very important.  For example, the 2N2222A type has negative resistance and zener properties when driven unconventionally...

Thanks!

Eldarion

aleks

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Re: Mysterious Resonant Circuit
« Reply #62 on: July 28, 2008, 08:27:28 PM »
This way you could probably scale the effect up into the 10 Watts range hopefully.

In the worst case scenario one can simply build 10 similar units. Repeatability is most important while scaling up may not work depending on subtle characteristics of components. E.g. transistor may not work as required in another voltage or power range.

Anyway, this setup does look like SM TPU after all discussions on this forum. Just a grossly scaled-down variant. As was mentioned it does look like "Joule thief" as well (note that it needs a simple bifilar winding like the open TPU does).

pauldude000

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Re: Mysterious Resonant Circuit
« Reply #63 on: July 28, 2008, 08:34:02 PM »
EM, I almost choked when I read this initially, and the best my lil ol brain could come up with at the time was "interesting".

I am now wondering if your self frequency governing system isn't the motive principle behind the TPU itself.... (I am deadly serious.)

I am going to have to put my TPU experiments on hold for awhile, and build one of your circuits to test some questions!

If what I consider is correct....... (that possibly SM's driving unit was the actual source of OU, and the TPU itself merely amplified the effect...)... that would explain much.

;D Interesting.

Paul Andrulis

pauldude000

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Re: Mysterious Resonant Circuit
« Reply #64 on: July 28, 2008, 08:38:37 PM »
I have an old spare Compy power supply torn open before me, with some beautiful little toroidal cores sitting there as I speak. Small NPN's of every size shape and description in my parts bin, and breadboards just waiting. Add enough wire to choke a camel.... ;D

I think I am actually getting excited! (kewl)

Paul Andrulis

eldarion

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Re: Mysterious Resonant Circuit
« Reply #65 on: July 28, 2008, 08:50:26 PM »
If what I consider is correct....... (that possibly SM's driving unit was the actual source of OU, and the TPU itself merely amplified the effect...)... that would explain much.

I nearly had the same reaction...and I think you are 100% correct here!  The same thing should apply to the Boyce device.  Use three of these, somehow triggered in sequence around the periphery, and the available power should increase dramatically.  Hmmm...I seem to recall something in one of the SM documents explaining the operation of the TPU very similarly to this!

Eldarion

aleks

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Re: Mysterious Resonant Circuit
« Reply #66 on: July 28, 2008, 08:56:33 PM »
Use three of these, somehow triggered in sequence around the periphery, and the available power should increase dramatically.
Why not just try to connect one into another after rectifier bridge? I wonder what happens on the "output" end of the existing unit if you use two or more batteries with higher overall input voltage.

eldarion

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Re: Mysterious Resonant Circuit
« Reply #67 on: July 28, 2008, 09:04:35 PM »
Why not just try to connect one into another after rectifier bridge? I wonder what happens on the "output" end of the existing unit if you use two or more batteries with higher overall input voltage.

Definitely an option.  I was just trying to tie in the various clues on rotation and gyroscopic action...maybe the FTPU operated the way that you suggest?

aleks

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Re: Mysterious Resonant Circuit
« Reply #68 on: July 28, 2008, 09:12:20 PM »
Definitely an option.  I was just trying to tie in the various clues on rotation and gyroscopic action...maybe the FTPU operated the way that you suggest?
Three or more toroids on a single chassis may create a really "pronounced" gyroscopic effect, especially if relatively high power is running around the cores (not just 1W). Beside that an open TPU may "house" 4 of such stages in those boxes, all connected via lamp wires in a "funky" fasion like openTPU is a big core while it's just an "artistic" way to interconnect parts of the device. And of course, considering geometric relation of these boxes, this may create a "rotating" magnetic field simply because units are "powered" in sequence and the non-rectified output is sinusoidal.

Frederic2k1

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Re: Mysterious Resonant Circuit
« Reply #69 on: July 28, 2008, 09:14:25 PM »
Please, can anybody explain to me, why in EMDevices' circuit the transistor is driven in a non-convential way
?
First when voltage is applied the cap next to transistor loads through 100 Ohm resistor and then when it reached 0,7 Volt the transistor is conducting. For me this is a convential way of using a transistor...

 

eldarion

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Re: Mysterious Resonant Circuit
« Reply #70 on: July 28, 2008, 09:28:11 PM »
He is driving the base of the transistor negative, not positive.  Look at the polarity of the feedback coil--it is reversed from a normal blocking oscillator.

Eldarion

Peterae

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Re: Mysterious Resonant Circuit
« Reply #71 on: July 28, 2008, 09:47:59 PM »
EMdevices good luck with this.

it certainly seems interesting, i have it running but am using a larger ferrite core, so far i have had trouble in getting a high voltage loaded output.
I have just had to pack up for the night having made a discovery, the type of transistor is critical, first i used a ztx653 but the gain was too low so i swapped to a BC548C this got it oscilating and allowed me to play with cap values, but the break through for me was using both transistors in parralel, i still have a long way to go yet, but not tonigh big electrical storm here

It would be real interesting to know the transistor type you are using and also your cap values if you have a cap meter.

Peter

wattsup

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Re: Mysterious Resonant Circuit
« Reply #72 on: July 28, 2008, 10:06:34 PM »
@EM

The miniTPU rides again. Go tonto, go blitzin. lol

I have noticed on many of my tests with other circuits that the load plays an important part in keeping the whole system under compression to then maintain the effect. This touches up on what @armagdn03 was saying about why we are not matching the load to the actual circuit capabilities.

Also, I think the reversed transistor is working because you are actually generating a reverse current on every pulse off which can then pass the transitors diode. Like when we did EC's circuit on the Tesla Project thread showing movement on impluse and movement off impluse creating a reversing current. So you are playing with both the current forward and current backwards. @allcanadian would know much more about this then me.

Good, very good indeed. Keep it up @EM.

innovation_station

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Re: Mysterious Resonant Circuit
« Reply #73 on: July 28, 2008, 10:16:36 PM »
good one whatsup

it does flow both ways  :D

hot and cold.....

ist!

EMdevices

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Re: Mysterious Resonant Circuit
« Reply #74 on: July 29, 2008, 02:54:58 AM »
transistor:    2N4401,     (from Radio Shack, box of 15)
Base Capacitor:   0.01J    (not sure what that means)
Top capacitor for setting resonance:  47J
Capacitor in LC reactive branch, 220J

I guess there is a naming convention for these, I saw it somewhere once.

EM