Joule Thief

[nievesoliveras]

@all

I tried to build a joule thief with the tesla coil I built from an iron solder handle and the voltage produced by my joule thief circuit is not enough to make the tesla coil to oscillate.

The circuit configuration is included in case someone has a better circuit or better electronic skills to make it work.

Jesus

[innovation_station]

great work jesus ... 

i just love your battery holder .... 

we can make it sing ....  but we need to fully understand what happins when trist throws the switch ....

lol



ist!

your cap seams quite large ...   i think you need a good spark to get it to fly ...  or a high voltage cap that fills darn fast ...

but then agin when we look at neo zap i have a darn nice spark gap going on low voltage ...   

[xee2]

@ nievesoliveras

I tried to build a joule thief with the tesla coil I built from an iron solder handle and the voltage produced by my joule thief circuit is not enough to make the tesla coil to oscillate.

Do not give up yet. I think your circuit can be improved. You do not have a typical JT circuit.
1. the base coil should be the small number of turns
2. reverse diode and put from collector to emitter

EDIT: like following diagram but without pickup coil and battery capacitor

EDIT 2: try reversing leads on base coil if circuit does not work

[nievesoliveras]

great work jesus ... 

i just love your battery holder .... 

we can make it sing ....  but we need to fully understand what happins when trist throws the switch ....

lol



ist!

your cap seams quite large ...   i think you need a good spark to get it to fly ...  or a high voltage cap that fills darn fast ...

but then agin when we look at neo zap i have a darn nice spark gap going on low voltage ... 

I am waiting for the caps and the transistors that are specifically for high voltage, also the resistors. The resistors are 5w.

I know that your neo zap is the best that there is on this forum, but humbly I tell you that you are not a good teacher. You have no patience to teach.

Thanks for the battery holder praise.

@ nievesoliveras

Do not give up yet. I think your circuit can be improved. You do not have a typical JT circuit.
1. the base coil should be the small number of turns
2. reverse diode and put from collector to emitter

EDIT: like following diagram but without pickup coil and battery capacitor

EDIT 2: try reversing leads on base coil if circuit does not work

My bad! I flipped the transistor horizontaly but let the Led diode on the other side.

I tried switching the wires as you say but it needs a big spark to work.

I will read a pdf I stored about doing a simple high voltage device and see what happen.

Jesus

Edit:

I repaired the schematic as you recommended.
Thanks!

[nievesoliveras]

@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