Second Stage Joule Thief Circuits

[tysb3]

let's go gadgetMan let's go

http://www.youtube.com/watch?v=fHl_yHuQfnU

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This is what I have from start :

[tysb3]

Now for next step circuit.
I need to find parts (from what I have) (transistors , zinner diod) for most efficiency.
JTs coils + secondaries - on the next.

[tysb3]

Just what comes to my mind: capacitor C2 was dumping feedback pulses power.
Need to check it.

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edited:
lucky, I don't break experiment, just remove C2. Frequency feedback pulse was dropped twice to 0.1Hz (1 pulse in 10 seconds)
Second JT was feeding first JT through C2.
I'll keep it ower night to see how mach will be dropped voltage, to compare with previous nights.

[tysb3]

Hi,  @all,
Just completed my first experiment. What I found: battery voltage much depends on the temperature.

[Mk1]

@tysb3

Nice work ! keep it up .

I am planing a second stage also with my NPN PNP circuit , second stage powered by 2 jt ...

Mark