Joule Thief

[xee2]

@ jeanna

Congratulations. Isn't 100 volts the highest you have gotten?.

I suspect he just has a better 2N2222 than you do. The 2N2222 has a large variation in performance from unit to unit. I recommend 2N2222A which is sorted for better performance and is usually only a penny more. He also used a 0.1 uF cap not a 47 uF cap which may make a difference. Did you adjust the base resistor value for highest voltage?

A 100 volt output is close to lighting a neon. They usually need a little over 100 volts to turn on and then will run with only 90 volts once they are on. Just connect the neon between the two leads of the secondary coil. No rectifier or cap is needed. It works both ways.

[electricme]

@all
Eeeeehaaaar looks like Stefan's got the website up again, Thanks Stefan.

Nice to see us all back, Jeanna, Al and ist, I got your PM's about the access prob.
Yesterday I had troubles accessing it, I thought it was my PC needing a reboot, but after doing this, I still had intermittiant access probs.
This morning early, All I could see was the top bar and a blank secrrn, I could send Jeanna a reply, but after that, it locked up. I couldn't reply to all the others, must still be a grelmin in the works, but at least Stefan got the main forum working.

I'll send this and see if it appears like it normally should.

jim

[jadaro2600]

@ jadaro2600  and jeanna

  I usually consider the negative side of the battery to be ground. The emitter is connected to the negative side of the battery. Since they are both connected to same place, how can there be a difference in voltage between them?

lol, you're right, ...I just thought that the current might be pulsing or some other thing might be going on on that route.

[jadaro2600]

Is it just me or is this circuit a little cross?  Doesn't this waste energy to a larger degree - it's got a path straight through, so to speak.

[xee2]

Doesn't this waste energy

Yes.