Making a Simple Triac Dawn-Dusk Switch

[@jp040759]

They use relays these days due to LED light bulbs. Using a triac on the LED bulbs depending on their internal electronics may not function properly. This saves them some troubles after the sale.

[@healthyudavidtroyer8419]

Would this work to switch on a D.C. Motor? I am wanting to turn the motor to open and close a chicken door.

[@howardandrus8828]

Tom, Does this work dawn to dusk? I dont want dusk a dawn switch. Thanks, HOWARD

[@newburypi]

100 times a second?

[@crazytom]

Each half-cycle results in a zero crossing. +ve to -ve and -ve to +ve

[@FlightSim2703]

Long story 🤔