I'm building a xenon flash unit with a power of 50Ws (300V 1000uF capacitor).
I need to trigger it from a microcontroller. For that I use a MOC3041 to opto isolate my µC from the HV circuit and command my thyristor (MCR12DG). This one trigger a HV coil to light up my xenon tube.
The Igt of my MCR12DG is 8mA, so I set a resistance of 1.6K, VTrans is 14v.
It's the first time that I use an SCR, and may be something is missing ?
Is my SCR correctly chosen for my application ?
Here is a correction with a MOC3023 as suggested. The main term is now connected to the SCR in order to turn it off. A 2N3904 is used to trigger the led from the uC and a 500ohm resistor to limit the current through the MOC3023.
But now as I connected my main term to 200v.I use 2 resistor and a capacitor connected to the main term as recommended by the application note AN-3003 for inductive load.
Is this correct ?