Trinegistor working!!!!!!!!!!!!!

[Prive]

Yes yes an 3 times yes!!!!!!!!!!!!!!!!

I recieved some 2n2222 and after some months i give it a try again.

Yes it works right but how Zvex says 12V

Thanks Moosapotamus!!!!!!!!!!!!!!!!!!!!!!!!!!!

Saludos, Marcelo.

[zachary vex]

negistors can be fussy down around 9 volts.  they might work, but often have trouble.  i use a negistor in my nano head as the basis for a VCO/regulator in the high-voltage switching supply, and the input voltage is 12VDC for that one.

[moosapotamus]

Right on, Marcelo!
Very glad to hear you got some good stuff going on. Curious, did you make it with any changes to this circuit... http://www.moosapotamus.com/tri-negistor/TriNegSchematic.gif? I know that folks have gotten mixed results using the negistor as a sound/noise generator, particularly with putting three of them in series as in the tri-negistor. Good on you, man!!!

Cheers!
~ Charlie

[Prive]

The schem is the same, but i use 100 ohms against 100K and i think i'll change the pots to 10 or 20K cause only works in the lower R settings.
I made some changes in the caps value and i try one of your ideas, i use a momentary switch in series with a .01 cap from the second stage emitter to the first stage base, some kind of feedback, interesante!!!!!!
Completly another animal with 9V, maybe i'll use a switch between 9 and 12.

Saludos, Marcelo.

[moosapotamus]

Completly another animal with 9V, maybe i'll use a switch between 9 and 12.

Cool, that's interesting. A sag pot to adjust the voltage might be worth a try, too.

~ Charlie

[Paul Perry (Frostwave)]

It should be possible to make a trinegistor style noisebox using 555s, since they are both relaxation oscillators.

[troubledtom]

It should be possible to make a trinegistor style noisebox using 555s, since they are both relaxation oscillators.

mooseman did it w/o the 555, i own it, he gave it to me. i luv it!!!!!
        peace,
            - tom

[moosapotamus]

hey tt... you rock!
I am totally going to build that infinitephase. It's only, like, one of a dozen or so different projecets I've got going on at the same time right now, but it's right up there near the top! :wink:
Hope all is going well on your end.
~ Charlie