Re: Need help to ID this transistor
It may be basically an Armstrong oscillator, like used in Joule thieves and Tesla coils etc.
I'm suggesting a partial schematic, rough scribblings. I don't know what the case connects to, or the two shorted pins- do they go to GND or case. Totally blind as far as even the pinout of this mystery transistor.
Try measure inductance between the two pins, that will tell you if it's merely a transformer winding we are seeing.
The only other reasons for a short there are melted pcb inner-layer, or a shorted speed-up driver.
It may be basically an Armstrong oscillator, like used in Joule thieves and Tesla coils etc.
I'm suggesting a partial schematic, rough scribblings. I don't know what the case connects to, or the two shorted pins- do they go to GND or case. Totally blind as far as even the pinout of this mystery transistor.
Try measure inductance between the two pins, that will tell you if it's merely a transformer winding we are seeing.
The only other reasons for a short there are melted pcb inner-layer, or a shorted speed-up driver.
Comment