/diy/ - Do It Yourself

How to drive/trigger a thyristor with a logic IC output? Logic IC has its own 5 V supply. Thyristor & load supply is 24 VAC / 50 Hz to stay safe. The thyristor will only conduct during positive AC half-cycle. I'm building a pulse-skip circuit which will trigger the thyristor either on every half-wave or every 2nd, 4th, 8th, "n"th,... half-wave.
Never worked with AC circuits before. Pic related was the closest I could find, but it uses a DC supply for the thyristor + load.