Hi!
I'm currently trying to repair some broken smoke-detectors.
They have 2 circuitboards inside, one detection board and one voltage and signal regulating board.
They operate at a 12V input, but by a mistake the where connected to 24V
The detection board needs a 9V input from the regulating board, and works when hooked up to my powersupply.
On the regulating board i found a zener diode that was broken, but i don't know it's clamping voltage.
Is there another way to find a suitable replacement zener?
I'm not an experienced reverse-engineerer as you probably can tell...
The 12V supply gos straight trough the diode to power the regulating board.
It was soldered over CR1
I'm currently trying to repair some broken smoke-detectors.
They have 2 circuitboards inside, one detection board and one voltage and signal regulating board.
They operate at a 12V input, but by a mistake the where connected to 24V
The detection board needs a 9V input from the regulating board, and works when hooked up to my powersupply.
On the regulating board i found a zener diode that was broken, but i don't know it's clamping voltage.
Is there another way to find a suitable replacement zener?
I'm not an experienced reverse-engineerer as you probably can tell...
The 12V supply gos straight trough the diode to power the regulating board.
It was soldered over CR1