Joule Thief

[Pirate88179]

Jim:

Those look like the meters Jacques Cousteau used under water, ha ha.  In the early pages of our topic, several fellows spent a lot of time tracing transfo pins.  I ran across this while reading for some other information.  They may have all been Fuji transfos but maybe there was a Kodak in there as well?

Bill

[Pardon]

hello all

Jim i don't think you are correctly thinking about the coils. if your meter is connected to the correct pin you can ohm almost a short and the other pin will test to something like 300 ohms. another way will ohm out both coils at the same time. i hope you get what i am saying. i will try and upload a circuit. it is the camera circuit but modified for the Joule ringer.

Dennis

[Pardon]

Hello all
I have repaired the above msg with the correct AAA xfmr. the circuit works real good with a lights of America unmodified 1 watt led light. I could not find my drawing of the xfmr and the coil configuration but 2 of the coils are on opposite sides of the xfmr. I hope this helps with your projects. also i do not know any information on the windings / turns.

also if you look into the AA version the trany's can be the same and sometimes are the same on both versions AA/ AAA

Dennis

[electricme]

Pardon:

Thanks for the above post, all I know if there is a resistance presented to the meter it will show up as a reading which it did do, I'm not saying anyone is wrong, just keeping an open mind as well, besides I am still new at measuring these tiny transformers, it would be great if we had access to the manufacturer design sheets, lol but I don't think that will happen.

Thanks Dennis for the imput and the crt.

jim

[Pirate88179]

Jim:

Surely those specs are out there somewhere on the net.  Did you try to Google those part numbers?  That does not always work but, I have had good luck in doing that.  What I mean is, someone designed those transfos, and then had to sell them to someone else so, the specs are somewhere I would think.  Possibly under another name or part number though.  Research is not easy, ha ha.

Bill