3v OU Flashlight

[Farmhand]

These might be a fraction big for the pot in the picture, but I like the battery in the pot idea so I might try to make one to trick my brother  Those button cells hold a fair bit of charge don't they ? These don't seem to hold over 3.5 volts for long but are rechargeable, I think they need a good charging a few times, I had to use a three pack of AAA's and a resistor to charge them up a couple of cycles and they are improving, in the meters they get fully discharged if the meter is taken out of the wall.

..

[alejandroguille]

These might be a fraction big for the pot in the picture, but I like the battery in the pot idea so I might try to make one to trick my brother  Those button cells hold a fair bit of charge don't they ? These don't seem to hold over 3.5 volts for long but are rechargeable, I think they need a good charging a few times, I had to use a three pack of AAA's and a resistor to charge them up a couple of cycles and they are improving, in the meters they get fully discharged if the meter is taken out of the wall.

..

Should be investigated when (exact date) appeared AKULA with their circuits.
Something important is trying to cover.

[havuhung]

These might be a fraction big for the pot in the picture, but I like the battery in the pot idea so I might try to make one to trick my brother  Those button cells hold a fair bit of charge don't they ? These don't seem to hold over 3.5 volts for long but are rechargeable, I think they need a good charging a few times, I had to use a three pack of AAA's and a resistor to charge them up a couple of cycles and they are improving, in the meters they get fully discharged if the meter is taken out of the wall.

..

Hi Farmhand,
There are more choices Battery: Rechargeable 3.6 Volt Lithium Coin Cell Button Battery LIR2450 For Audio Equipment (Voltage: 3.6V Capacity: 120mAh  Dimension: 24.5*5.0mm  Weight: 5.0 gram)

[Farmhand]

Well I made up a JT and it runs from a AAA battery, it's a great LED driver, I've only got 2 x 5 mm LED's on it, it's running at about 135 kHz with about a 2 uS discharge time into the two LED's. Don't know how much power it's using, must be a bit because the LED's are bright. I'll try more tomorrow.

Below is the Collector to ground wave form and the base to ground wave form. I'll try more load or to use less input. I should use it powered by a AAA to charge the two 20 mAh batteries in series with the LED's or something.

Oh, I used a MPSA06 transistor and 200 kOhms on the trigger winding with a small capacitor I think 100 pF, arranged as in the recent drawings, kind of.

[gyulasun]

Attention to details clearly isn't your forte.
3 coils (20 turns each, 24G), 2ch driver (IDDX609 + IRF640), no capacitors connected to the coils. Each coil has a negligible resistance.
The third coil (red channel) is the load coil. The resistor in the picture is 5.1 om.

Outside the resonance the circuit exceeds the set current limit of 1.5A. However, @12v 14 mA output is 560V p-p in core resonance.

Hi Avalon,

Have you loaded the output coil with say a 10 kOhm or any suitable resistor? I would like to know what voltage level remains from the 560Vpp voltage and presently I have no means to repeat such test.  In your video the load was the 10x probe input impedance (maybe 10 MOhm//15 pF), right?  (the 5.1 Ohm resistor was floating in the air)

Thanks,  Gyula