Hello,
I am using Bt139 E series sensitive gate triac to directly turn on or off a motor using 89C2051 micro controller (circuit attached. The problem is that when triacs are triggered at medium-phase
angle and drive inductive loads, they generate heavy voltage peaks on the gate, which could damage the micro controller. In my opinion if I put a diode in series with gate resistor will protect the micro controller. Your suggestion is requested to fix this issue.
Note: I can not use optocoupler due to some reason.
I am using Bt139 E series sensitive gate triac to directly turn on or off a motor using 89C2051 micro controller (circuit attached. The problem is that when triacs are triggered at medium-phase
angle and drive inductive loads, they generate heavy voltage peaks on the gate, which could damage the micro controller. In my opinion if I put a diode in series with gate resistor will protect the micro controller. Your suggestion is requested to fix this issue.
Note: I can not use optocoupler due to some reason.