Joule Thief

[Mk1]

@all

http://www.discovercircuits.com/DJ-Circuits/gatextl.htm

description VERY LOW POWER GATED CRYSTAL OSCILLATOR
The circuit gates the output of a continuously operating 32KHz crystal oscillator to the input of a C-MOS buffer when clock pulses are needed. The technique gets around the problem of a slow starting crystal oscillator by keeping the oscillator going and switching on a transistor power stage only as needed. The method keeps the standby power consumption to a very low 1uA when used with a 3v supply.

Freq set by the crystal ...

[jeanna]

@ jeanna

Does the neon or tube light when put across the capacitors with the diodes in series?

Your JT may need adjusting to work into the capacitors.

I will check this out soon. I was out today and just returned.
I will let you know.
Thanks, bbs.

@Kooler.
I am glad to hear you get your scr's from allelectronics. I must have the right kind then. I bought the only 2 types they had so...

@Crowclaw, My guess is that what I am looking for is the largest cap I can find that will fill and release enough charge quickly enough to keep the light on without a strobe.

I am limited right now with caps of low voltage (except for the 105 and 581 and a couple found in the cfl circuits) so, my first quest is to light it at all, then after that, I will continue to work to  light it until it lights so frequently my eyes cannot see the blinks.

====
btw folks, those LoA 20-leds bulbs are awesome.
I think everybody should get 4 or 5.
They come in different white colors and bulb shape and the  UNMODIFIED bulbs can get really really bright when there is enough spiky voltage. They can take about 700v maybe more, I have had them at 1k volts and they are OK --- do not do that unless they are unmodified.

OK 3PM time for lunch then to get those caps n diodes going.

jeanna

[jeanna]

Hello friends, I would succeed, a small but thick Ferit teroid working on a very simple scheme: a transistor, resistor, Ferit teroid. Reastat I did not connect, it does not work.

Thank you for the fact that you exist on this earth!

Great job, zhak1

If you have 500volts the rheostat will seem to  not work. You need about 1kv to see the lights become dim with the rheostat.

About how many passes current in this scheme? is dangerous?

I have never been hurt by the secondary ends, when there is no diode on the secondary.
Sometimes there is a little sting from them, but not so much as a mosquito bite.

'll Show how to increase the brightness of the lamp?

Increase the number of turns on the toroid, or decrease the resistance at the base of the transistor.

Our government is destroying all information in Russian on the internet about alternative!

Yours too?

jeanna

[jadaro2600]

The one nation that could stand to use a little free energy for heat: it's no surprise that they want to control it.

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Has anyone used a trigger coil on their regular JTC OTHER than the ones discussed on the NPN PNP JTC thread?

[jeanna]

Like jonnydavro and the sec?
Yes, but my hand wound toroids performed better.

jeanna