Joule Thief

[gadgetmall]

Groundloop Nice Boxed energy Device . this one is going in a little box too. I got it to trigger with a ground tap on the positive input wire to something that is plugged in to the mains . it stays lit down to .5 volts running the bulb with the same brightness . THis particular 220 volt LED bulb is rather dim on the regular mains . As i bought it from China and thought it would be a nice light but it is a 220vac . This circuit lights it up brighter that the mains .
I forgot to mention that this Bulb will light also with just one wire however it it not High Voltage . Weird but it does work with the opposite secondary disconnected from the PIGTAIL  ..
When i get some more 2n3o55's one day  and a different transformer i will give it another shot but i am happy with the very low power this takes, as low as .5 volts with  the same brightness, I almost got it with the tiny homemade core . It will be a matter of winding one wind at a time to get this circuit at a 0volt input to run those transistors from the cap. . i am trying a few 2 foot magnesium and carbon rods today to see if it works . .
I think you can use ANY NPN transistor even scrap ones from some old electronic boards . I want to try some germanium transistors i have so i cut a few more pieces of PC hook up board to try different ones.
the last one i put it on an AA battery almost depleted .6v and it triggers with a touch and gets really  bright if i attach the pos  wire clip to ground or any object that is plugged in .Although is still is not exact but it will flash for a few seconds on the cap only . Close ..

[ALVARO_CS]

hello all
Groundloop: I replicated the lasersaber crossover circuit as per the schematic you posted before.(except the solar)
Used a 650K resistor (could not find a 1M)
Transformer from an old Siemens cell phone charger (in AC 230V - out DC 4.5 V- 0.6A)laminated.
Lights a chinese led lamp (30 leds) 230V - 2W from a Li-Ion batt. 3.7 V

Planing to feed it with four rechargeable 1.2V.
and will continue experimenting, fascinating circuit (also thanks to Gadget, glad you are back here)

Thanks
cheers
Alvaro

[Groundloop]

Groundloop Nice Boxed energy Device . this one is going in a little box too. I got it to trigger with a ground tap on the positive input wire to something that is plugged in to the mains . it stays lit down to .5 volts running the bulb with the same brightness . THis particular 220 volt LED bulb is rather dim on the regular mains . As i bought it from China and thought it would be a nice light but it is a 220vac . This circuit lights it up brighter that the mains .
I forgot to mention that this Bulb will light also with just one wire however it it not High Voltage . Weird but it does work with the opposite secondary disconnected from the PIGTAIL  ..
When i get some more 2n3o55's one day  and a different transformer i will give it another shot but i am happy with the very low power this takes, as low as .5 volts with  the same brightness, I almost got it with the tiny homemade core . It will be a matter of winding one wind at a time to get this circuit at a 0volt input to run those transistors from the cap. . i am trying a few 2 foot magnesium and carbon rods today to see if it works . .
I think you can use ANY NPN transistor even scrap ones from some old electronic boards . I want to try some germanium transistors i have so i cut a few more pieces of PC hook up board to try different ones.
the last one i put it on an AA battery almost depleted .6v and it triggers with a touch and gets really  bright if i attach the pos  wire clip to ground or any object that is plugged in .Although is still is not exact but it will flash for a few seconds on the cap only . Close ..

Gadget,

Nice little circuit you have there. I think it is important to wait for LaserSaber to provide more information about his
transformer so that we can find out what is powering his circuit when he used the roof as an antenna and the ground
connection. As I understand it, he disconnected the main cable from his house to his lab area and still manage to light
his circuit. But anyway, this circuit of his is great for battery powered light.

GL.

[Groundloop]

hello all
Groundloop: I replicated the lasersaber crossover circuit as per the schematic you posted before.(except the solar)
Used a 650K resistor (could not find a 1M)
Transformer from an old Siemens cell phone charger (in AC 230V - out DC 4.5 V- 0.6A)laminated.
Lights a chinese led lamp (30 leds) 230V - 2W from a Li-Ion batt. 3.7 V

Planing to feed it with four rechargeable 1.2V.
and will continue experimenting, fascinating circuit (also thanks to Gadget, glad you are back here)

Thanks
cheers
Alvaro

Alvaro,

I have found that I can adjust the light in the LED bulb (and thus the current usage of the circuit) by varying the resistor value.
If we use a very high (around 5M Ohm) resistor value then the circuit will use very little power and we could then use just
a small transistor for the switching. But the real interesting part is how LaserSaber was able to light his circuit with just an
antenna and ground while he had his lab disconnected from the mains. Not enough information available yet to find out.

GL.

[Groundloop]

Hi,

Today I did test the Joule Ringer CrossOver circuit on a Metglas AMCC-32 core.
The circuit runs well, but I still need the high Ohm (5 mega Ohm) resistor for the circuit to self start.
At 9 Volt input the circuit uses 0,16 Ampere to light the 3 Watt LED lamp to a OK brightness. (Not full.)

GL.