Using Triacs to Switch 24 VAC Sprinkler Solenoids
Posted in Learning Electronics, OpenSprinkler, Sprinkler Projects on Jan 9th, 2026
Introduction More than a decade ago, I published a blog post titled Understanding 24 VAC Sprinkler Valves. In that post, I took a close look at the sprinkler solenoid’s inrush vs. holding currents under 24 VAC, performed theoretical analysis and actual measurements, and explained the difference in the solenoid’s electrical behavior under AC vs. DC. […]
