Joule Thief

[TinselKoala]

One thing to bear in mind is that these little neons like ne-2 have very high resistance when "off" and very low resistance when "on". So it is possible to have sufficient voltage, while the neon is non-conducting, to create a plasma in the neon, but it might only last for such a brief time that the flash is invisible to the eye; but because the resistance went to zero for an instant the voltage drops and the neon turns off...

I don't know if this is the explanation, but it's something to consider.

(This is why you don't want to hook a neon up to an unregulated voltage source without a current-limiting resistor. They can fail spectacularly, like a blasting cap, if they are allowed to draw as much current as they want...)

[jeanna]

Thank you both.
It sounds like the flash camera is not my best source either way.

I just completed my next order with allelectronics. It NEVER fails that within 24 hours my next order begins.

Oh well, I did blow a new led so there is enough to do that as well as to light 8  blazing bright and probably 32 some.

Oh the new order includes 3 of those toroids. Maybe we can get them to sing together eh, stprue?

thanks,

jeanna

[xee2]

A touchy circuit...

[stprue]

Wow I just realized that the pic are loading but I have to scroll over to the right. Hmmm strange!

[stprue]

@Jeanna

Is this what you were talking about when winding back down?  This is obviously loose as to see details?  I'm still getting both the inside/outside crossovers!