This is the 100 LED Christmas light with the blinking/flashing controller (with 230V plug).
XEE2 Joule thief circuit (Davro inductor mod) with my modifications:
source: 1x AA battery 1.2 V,
PNP transistor: B857
and no capacitor.
Output voltage (no load) is about 140V (peak-to-peak), current: about 90mA, frequency: about 300 Hz.
More info and updates - check my websites:
http://www.facebook.com/fen.tv (become a fan for updates! :)
Thanks for watching! ;-)