Selfrunning cold electricity circuit from Dr.Stiffler

[PaulLowrance]

No problem! I changed it. I don't know how the forum is here, so you might have to refresh your browser cache.

Paul

[PaulLowrance]

@Paul
Quote:
"Here's the circuit. Please let me know if there's an error! There might be an error with C2 since that part is a bit iffy in your drawing."

Yes there is an error on the emitter of Q1 to C2, here is the corrected diagram.

Thanks, nice catch! It's now updated. BTW you forgot to add the blue square to make it a connection. 

Paul

[gyulasun]

Hi Folks,

I understand this corrected circuit already covers the circuit Dr Stiffler built and I wonder how the negative pole of the 18V supply voltage gets to the emitter of the Q1 transistor? 
In some of Dr Stiffler's earlier than this SEC versions, the negative polarity line of the supply voltage went directly to the emitter (via a choke coil) with a piece of wire and this seems to be missing here.  I do not mean this is needed here, maybe that is how Dr Stiffler built it indeed, but I find it unusual.

Thanks for any explanation in advance.

rgds, Gyula

[slayer007]

Hi Folks,

I understand this corrected circuit already covers the circuit Dr Stiffler built and I wonder how the negative pole of the 18V supply voltage gets to the emitter of the Q1 transistor? 
In some of Dr Stiffler's earlier than this SEC versions, the negative polarity line of the supply voltage went directly to the emitter (via a choke coil) with a piece of wire and this seems to be missing here.  I do not mean this is needed here, maybe that is how Dr Stiffler built it indeed, but I find it unusual.

Thanks for any explanation in advance.

rgds, Gyula

It's still there it's just going through the big cap first.
This way the cap will charge just from the Sec running.

And the AV plugs help to top it off.

[slayer007]

Sorry there was an error in the C2 cap polarity.

Also C2 was moved to the other side of the filter.

Transistor= MPSA06
F1= Ferrite beads 65 ohm @ 100 MHz
C1= .01 cap.
C2= 4400 uf cap.
C3= 470 pf cap.
R1= 1 Meg. resistor
L1= 2-20 uh variable inductor with ferrite rod for tunning.
L2= 22 uh coil
D1= 1N4148 diode
D2= 1N5399 diode