hamidmoallemi
Full Member level 2
Hi
we are using this circuit for getting a feedback of AC mains to MCU. this is a mass produced circuit.
the problem is that sometimes the opto-coupler CTR decreases so fast in couple of months and makes the circuit malfunction
I have searched and know about CTR degradation with time and its speedup with high temperature but this degradation rate is so unusual
?anyone has experience with this
do you have any comments about the circuit
thanks in advance
we are using this circuit for getting a feedback of AC mains to MCU. this is a mass produced circuit.
the problem is that sometimes the opto-coupler CTR decreases so fast in couple of months and makes the circuit malfunction
I have searched and know about CTR degradation with time and its speedup with high temperature but this degradation rate is so unusual
?anyone has experience with this
do you have any comments about the circuit
thanks in advance