Joule Thief -- Which transistor should I use?

[cnh1995]

Hi everyone..I'm trying to build a Joule Thief circuit operating on a 1.5V cell. Which transistor should I use? I have BC547 but I'm not sure it will work...Suggestions are welcome..

 

[davenn]

google is a wonderful thing

http://www.bing.com/images/search?q...+circuits&qpvt=joule+thief+circuits&FORM=IGRE

there's a whole mass of joule thief circuits with the components used
take your pic and try some out

Dave