Gadgetmall's Fuji Mod light CFL from 1 AA/AAA for - 12 hrs + - Thread 2

[Goat]

@ All

This is thread 2 of the previous Gadgetmall's Fuji Mod light CFL from 1 AA/AAA for - 12 hrs + - Thread 1 so please post any constructive information on this thread.

Regards,
Paul

[Goat]

@ All

Here's my first attempt, I removed the transformer from a Fuji disposable camera circuit board and started a prototype board with a 10 K ohm 20 turn potentiometer, the 68 pf capacitor is in parallel to the pot.

I also found a handy 3 terminal socket that will hold transistors, only problem with this is the pin assignment once soldered onto the the prototype board.

Regards,
Paul

[Goat]

@ All

First attempt at the barebone Fuji mod circuit and I successfully am lighting a CFL using a  single AA battery!

Edit: I'm going to add the capacitors on a separate duplicate board so that I can use the 3 socket to test different transistors on the original board.

Edit 2: Note, the dot on the transformer was on pin 4 so I reversed the connections to pin 4 to collector and pin 1 to the positive. 

Regards,
Paul

[jadaro2600]

Nice work.  Might I be so kind as to ask for a hand drawn circuit diagram, all the red ink is confusing - besides, the picture looks like something totally different.

I'll redraw the circuit in the DIA program if you decide to ...it's pretty handy for drawing circuits.

[Goat]

Hi jadaro2600

Here's the barebone version of the original drawing.

Regards,
Paul