Joule Thief

[Mk1]

@all

Green toroid 4 jt turn 21 turn pick coil one way 75 volts.

[innovation_station]

@all

Green toroid 4 jt turn 21 turn pick coil one way 75 volts.

no kidding ..... lol

i have a green unit laying right all ready to go ... 

ill whip her up ... 

thanks MK1!!

ist!

@MK1

have you wound a bifillar secondary ... ??   with this setup ??   might we get the same effects as jim ?

[Mk1]

@ist

I was testing the toroid, with 22 gauge, on the jt side 6 turns 65 volts ,jt 4 turns 76.3v, That only on way , meaning 21 turns only on one side going one way.

Now i know what i needed , it doesn't need much on the jt side , so more space for pickup coils . It will have 4 coil, 2 bifillar if you will.

Mark

I really need to get more of those green toroid.

This is going to be a new circuit , transistor , and feedback . a run around!

With negative feed back , i can bring down form 75 volts to 14 volts,  , wait there is a part missing.

Edit  if i go back down i get 40 turns and 105 volts.enough to light my neon.

[electricme]

@at the rockin IST, lol

Ist, your question about the diode arrangement, yes you twigged it, go to top of the class.
I have 1 LED connected across the coil output, now get this, after the LEDs is a set of 1N4004 diodes, Anode Kathode on one leg, Kathode  Aanode on other leg, the 2nd LED is connected opersate polarity to the front diode.

I was having alll sorts of problems with LED brightness all over this torid so I removed all LEDs after the 1N4004 diodes.
Then I series connected all secondaries in chain fashion, (series connection).
Then I removed the 2 turn coils I had.

At present, I'm seeing if I can use the output to charge up 2 Nicad 1.5v batteries in series. I will leave then overnite and see what gives in da morning.

Tomorrow morning I will go outside, and get a small "NiCad cell" 1.2volt and see if I can charge this with the JT.
I was reading that the JT is very good of recovering acid batteries, we shall see if this is so, (another JT to make up for this one)..


Now if I use a flip flop, or a multi vibrator, hmmm, I should be able to pulse DC into these cells.

Another thing I must do is to reconnect all secondaries in parallel, this will give me mili or amps.

Ist, my 2n2222 transister is getting warm to hot, depends on how much resistance I choose for the base leg. lol I had better make up a tripple darlington using a 2n2222, BD139 (or BD140) and 2x 2n3055 in parallel, yep lets put a bit of grunt in this thing.


I will post a pritty photo tomorrow and circuit, I'm tired, time for bed-i-byes, retire, a snooze, 40 winks, a sleep. ha ha

jim

[nievesoliveras]

@all

Hi!

@electricme

Keep shinning General!

Jesus