Mysterious Resonant Circuit

[hartiberlin]

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]

@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]

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]

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.

Interesting.

Paul Andrulis

[pauldude000]

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....

I think I am actually getting excited! (kewl)

Paul Andrulis