Joule Thief

[captainpecan]

@all

Time has been really short for me, working two jobs and all in these though times, so when I get some free time to check back in, everything has moved 50 pages already, lol...  So sorry if I missed the answer to this, but has anyone posted any results of work joining a Tesla Switch concept, with the Joule Thief yet?  I'm interested in working with these two to make the Joule Thief even more efficient, but I am not seeing any info of others trying this yet?  I'm obviously not the first one to think about this, does someone have any info available I can follow?  Many thanks in advance!

[electricme]

@all,
I tried to do a post here and seem to have lost it, so I will try again.

This is hasens1 circuit I am following
This afternoon, I blew the UB green LED which was between the 2N3055 Collector and the Emitter.

Last night, it was looking a very nice pritty light blue colour, very soft, then now I just happened to look down to see it fade to a green tiny point, then it was extinguished, never to light again. boohoo.

Next time I will put a 1k resistor between the LED and the transister, but I will also put a switch in here so I can turn it on or off, just to keep an eye on the transistor.

I discovered something else, the LED was cutting back the HV output of the toroid.
Before the LED blew, the output was         319volts
After the LED blew, the output went up to 435volts
A difference of 116volts.

This turns out to be only "half" the output which is avaliable. see photo below
More surprises to follow soon with pics

jim

[Pirate88179]

Jim:

435 volts?  Wow!  I really have to make one of these.  Don't want to touch that one with the fingers.

Bill

[gadgetmall]

@All
Hi Guys . I have been very busy and sorry have not posted in a while . i am still on page 551
@Hazen1
     Man you have got to be kidding ! Here is my replication of your 3 - 7- 150 and i only got  2 volts    .. there must be a direction of turns that is missing . . I am Ticked because that was a pain to wind . tell me the directions of turns for 3 and 7 and 150 . mine are all cw .. I am using your exact parts and wire ,

GADGET

[hazens1]

@Hazen1
     Man you have got to be kidding ! Here is my replication of your 3 - 7- 150 and i only got  2 volts    .. there must be a direction of turns that is missing . . I am Ticked because that was a pain to wind . tell me the directions of turns for 3 and 7 and 150 . mine are all cw .. I am using your exact parts and wire ,

GADGET

CW, CCW, should not matter. I can flip my coil over and it goes from CW to CCW.

I wind mine over the top through the hole, under then back over the top CCW usually. This could also be explained the opposite way... Wind under then through the hole over the top then back under CW.

The winding direction is a complete circle starting with the base, then the collector, then the pickup until I hit the base then I go back with the pickup until I hit the collector again and I'm done.

What Transistor with what resistor are you using?

I am hooking up the base and collector coil wires that are in between the base and collector coil to the posistive. The base (Green) goes to the resistor then the base of the tranny. The collector (Red) goes straight to the collector of the tranny.

Also, did you check with the ends of the coils not twisted. Sometimes I end up with a short where they are twisted and it messes it up.

Hope this helps.