Selfrunning cold electricity circuit from Dr.Stiffler

[k4zep]

Hi Stefan,

Not sure exactly how to use this site, bit rusty.  Here is a photo of my first try at this.  I'm attaching a photo, learning here.  15 LED's, show about 27V @ 3 ma in the circuit.  Note red and black lead at top, that is from sig. gen.  Notice only red lead connected.  No ground anywhere in circuit.  It is pretty well what the Good Doctor specified.

Ben

[hartiberlin]

Hi Ben,
many thanks for the pictures.
Looks great and also the new picture from Ron.

Ben, what, if you just use 2 LEDs instead of the 1N914 diodes ?
Does it also work for you as it did for me ?

What, if you just drive the ferrite "transformer" directly without the
choke and cap before it ?
What frequency works best for you ?

Many thanks.

Regards, Stefan.

[hartiberlin]

P.S. Ben,
do you also get a small neon bulb glowing as Ron has got around touching his core coils ?

[amigo]

I havenow got myself a few 74AC14 hex Schmitt trigger ICs that can go up to over 20Mhz
in a simple square wave oscillator and also found an old radio I can rip apart.

I have tried that route but to me the frequency isn't stable enough or it is very hard to adjust - was fluctuating all over the place. I tried using trim resistors and caps in a simple circuit and still not good. Do you have some better circuit you are building this on?

Thanks.

[DrStiffler]

@Ben

Great work. It looks like you have the free ends of the coils plugged into connector strips. You might want to pull them out and let then float. The capacity between then thru the board will kill some of your power. Holding a neon on the secondary while tuning thru the freq. range will show you the HV point.
Normally the more leds you use the better it likes it and allows the voltage to climb across the coil.