I am speechless over here.
I do no know for sure what I have found, but my 3v flashlight V2.0 went crazy.

The power supply is at 2.59V, but I now have over 1 kV on the secondary! (540V in the picture)
It is, obviously, a resonance, but at this stage I am inclined to think it is a magnetostrictive resonance excited by an external (primary) magnetic field.

Anyway, at 230V ~ RMS it looks like I have enough power to light up a relatively big CFL light bulb while having the circuit self-sustain.

~A

Quote from: avalon on May 09, 2014, 01:53:00 PM
I am speechless over here.
I do no know for sure what I have found, but my 3v flashlight V2.0 went crazy.

The power supply is at 2.59V, but I now have over 1 kV on the secondary! (540V in the picture)
It is, obviously, a resonance, but at this stage I am inclined to think it is a magnetostrictive resonance excited by an external (primary) magnetic field.

Anyway, at 230V ~ RMS it looks like I have enough power to light up a relatively big CFL light bulb while having the circuit self-sustain.

~A

Dear Avalon.

What the Guys over at SETI would have called, the WOW signal !! 

Keep up the great work.

Cheers Grum.

Quote from: avalon on May 09, 2014, 01:53:00 PM
I am speechless over here.
I do no know for sure what I have found, but my 3v flashlight V2.0 went crazy.

The power supply is at 2.59V, but I now have over 1 kV on the secondary! (540V in the picture)
It is, obviously, a resonance, but at this stage I am inclined to think it is a magnetostrictive resonance excited by an external (primary) magnetic field.

Anyway, at 230V ~ RMS it looks like I have enough power to light up a relatively big CFL light bulb while having the circuit self-sustain.

~A

перебор.....

bust

Quote from: avalon on May 09, 2014, 01:53:00 PM
I am speechless over here.
I do no know for sure what I have found, but my 3v flashlight V2.0 went crazy.

The power supply is at 2.59V, but I now have over 1 kV on the secondary! (540V in the picture)
It is, obviously, a resonance, but at this stage I am inclined to think it is a magnetostrictive resonance excited by an external (primary) magnetic field.

Anyway, at 230V ~ RMS it looks like I have enough power to light up a relatively big CFL light bulb while having the circuit self-sustain.

~A

Before you lose your voice it is important to note input current and voltage as well as output current and voltage even if into a load resistor, which I prefer. As an example, a 1 or 2 Watt carbon slug resistor of the proper value on your secondary will tell quickly if you have real power.

It is easy to get high voltage especially from a tank circuit or self capacitance of the output coil if unloaded. How is your secondary connected or is it floating? Best to supply the schematic you are currently using in your test and the probing points with a note.

CFL's are a bad choice for a load unless you have previously characterized it's light output. They can be lit with very low current high voltage, high frequency if you don't warm the filaments.

With the resistor, heating will tell the whole story and they are easy to characterize. The best is a low power incandescent 7 Watts or less, they are available up to 220 Volts. The relative brightness of such a lamp is an indicator of real power plus you can characterize it by temperature which is easy to measure with today's DMM's. Just glue the thermocouple to the bulb envelope and characterize it ahead of time by creating a chart of input power vs. temperature. Same for a resistor.

If you can get your circuit to sustain disconnected from the power supply for a very long time (hours or days), you have achieved it load or no load, as the chips and switching losses themselves are a load albeit small.

Quote from: semenihin-77 on May 09, 2014, 02:10:52 PM
перебор.....
bust

I know, right?
Anyway, I am re-building the circuit again. At some stage the voltage increased even further and the coil started 'dancing' around the table. Then (with a big spark) both LEDs, MC34063, and a couple of capacitors gone up in smoke.
BTW, the power supply is limiting the current to 100 mA max so all that power didn't come from the PSU.

~A