Joule Thief

[xee2]

@ nievesoliveras

I do not think your Tesla JT circuit is correct yet. It may work if it is hooked up per diagram I posted.

Congratulations on the CLF. It looks very bright to me. They will not be as bright as when powered from wall since they are not getting as many watts.

[Pirate88179]

Jesus:

Nice work!  I agree with Xee2 that it looks very bright to me.  Also, I noticed you still have your 2 neons in the circuit at the same time.  They take volts and some power to light so maybe you are robbing yourself of this circuit's true output potential. (No pun intended)  Just a thought.  I know they are used in my Bedini circuit to protect the transistor but they only light when I have no out put hooked to the circuit, not when operating it normally.

Bill

[resonanceman]

@all

Now here is 5:33pm.
In the morning I did some experiments with my new flyback configuration and without the tesla coi and I got to light a cfl with the circuit.
The only problem is that it does not light the whole room and that the input voltage was 9volts. I had to turn it off quickly after the photos because the transistor gets almost red hot.

When the right transistor arrive I will try again and with less voltage.

Jesus

Jesus


Just  a thought  about the   Tesla  coil  JT

A Tesla coil has  to be loosly  coupled  so that the secondary  can  run at high  frequency .
I think  your  Tesla coil JT  would run  if you moved the  base  coil   closer .......and maybe tightened  it up a little .
A  JT needs to be tightly coupled   because it is  low  power .


gary

[jeanna]

Very nice jesus,

Lighting the cfl is no mean feat, even with 9 volts.
Does that mean you were not able to get the circuit to run with less?

The heat is a problem, though.
To me, at least, the heat means there is something wrong.

There might be a short somewhere not allowing the transistor to turn off. (as Bill suggests, perhaps it is the neons.)
I wonder if they are bleeding off the back spike that turns the transistor off.
There could be a base resistor adjustment that is needed with the 9 volts.

Does 1.2 volts battery heat up the transistor also?
...Just some thoughts,

Anyway, congratulations on the cfl, with 2 neons!

jeanna

[innovation_station]

i do agree jesus great work ...

about the im no good at teaching ...  i so know this too well ...   

thats why im happy for this site to make it a easer job as a team ...

cuz none of this came easy ..  but i was driven by something i can not explain ......

ist!