Joule thief lighting up 20 ultra bright 10mm LEDS with 1,28Volt and about ...
for 3,4 Volts and 25 mA !!! That's what I call efficient. The ferrite core with the small coil is recycled from an old PC power supply, all I did ...for 3,4 Volts and 25 mA !!! That's what I call efficient. The ferrite core with the small coil is recycled from an old PC power supply, all I did ...
Tidak ada komentar:
Posting Komentar