I need help for the design of on-air light interface. The DB15 connector output of console arc10 is 12 V, 200 mA (max). The load is on-air light bulb, 230 V AC. I'm considering the interface circuit between arc10 console output and the load to be the optocoupler with a triac.
Is it ok to just use a resistor voltage divider to convert the DB15 connector output 12 V DC 200 mA to a 5 V DC optocoupler input without any issue? What about the drawn current of the optocoupler input? What value of resistor to satisfy the optocoupler input drawn current.