Joule Thief

[xee2]

@ jeanna

No, that is all I have done so far.

[gadgetmall]

@xee2
      Good Job. IF you have one TRY a pot in series with your resistor and move the lil cap across the outer legs of the pot  then use the middle leg and one outside leg . I have tried it with just resistors and did not get the effect of less current more light . DID you Notice the increase In power when you put the other cap in parallel to the Battery ?Also it seems to  matter if you wound in series one wire  or two twisted  .. i assume you went with one wire being you have odd windings .
Al

[xee2]

@ gadgetmall

This circuit should have a cap across the battery. That way the cap can charge up slowly at low current between the pulses when the transistor is on. That is why the battery current is low. The cap charges up slowly and then the energy is released quickly when the transistor pulses on. But if the battery can supply the peak current for the pulses, then the cap is not needed. The advantage of the circuit is that it can work from batteries that are not able to supply much current. The AAA battery I am using can supply over 1 amp so the battery cap is not really needed with it, but I put it in because I feel it is a key part of the design.

I think the way I have the base resistor and capacitor connected is best. But, then everyone has their own preferences. Thanks for coming up with the idea of adding the capacitor. It is a great way to reduce the current required from the battery.

[Light]

Guys, it’s not a point, we can get any HV from it, depending of gauge of wire, turns and capacitors, (see attach). Even put bunch of coils on it and get motors, but it just split the voltage.
But real challenge here to get amperage. Probably using another transformer, or spark gap, or breaker. At least that’s what I'm trying to get.

[xee2]

@ Light

I think maybe you are missing the point. Adding the base cap allows the circuit to light LEDs from simple home made batteries,such as a nail and copper wire in a glass of salt water.