Joule Thief

[WilbyInebriated]

@jeanna

I just got the same problem you had lighting the led of the pickup coil and the jt at the same time , i fixed it by changing the led polarity Always make temporary check of the led before soldering that will help you greatly in understanding what goes on in this circuit.Leds are like diodes like in the video the juice only pas one way,it may light even if not connected in the properly if voltage is ac(in this case the led working is not a indication that its connected right).

true true, i have a couple jt's that will light the led(s) to the same brightness no matter which direction the polarity is.

[Mk1]

@all

When making test with magnet remember they are not the same on each side.
And yes it can stop the toroid from working since his it to strong for the pulse of the joule thief to pulse the toroid.The joule uses the magnetic
to transmit the energy to other coil ,but if the pulse is stopped it will not transmit because the pulse is to weak, and its also the reason transformer only works on ac voltage.The real question is where is the voltage going,that's the fun stuff.

[amigo]

Re: Magnets effect on toroids.

Has anyone tried holding magnets arranged in opposition or attraction either side of the toroid ?

Regards...

Hey Cap-Z-ro,

I did that months ago back when the first JT mania started. IIRC, on a toroid coil core, one magnetic polarity will almost (or totally?) extinguish and the other slightly enhance the LED light output. Although I wouldn't say it's anything to write home about, but then again I did not spent sufficient time with magnets and JT. I discovered Dr. Stiffler's circuit which could drive far many more LEDs at the slight expense of the PSU...

[Mk1]

@all And amigo

Good point amigo , since it take some voltage to get the core to transmit and also magnetize the core , if we take care of the magnetizing part with a magnet we should save on that part on energy , maybe be just pulsing with one wire more volts less current. just a tough .Crazy but maybe not.

[Cap-Z-ro]

Thanks amigo...your results are interesting.

I suspected magnets could possibly enhance the output.

This puts me in mind of the huge spark 'Ist' produced when he used the corner of the magnets.

Could such an alignment also cause a huge increase in the output of the 'j/t' ?

Regards...