4ü 1 Arada Zamanlayıcı Bilimsel Deney

Build the circuit as shown, turn the timer handle counterclockwise to normal on position. The timer and flashlight will always be on.

Make the circuit as shown, turn the timer lever clockwise until the time you need (up to 30 minutes), the flashlight turns on, the timer starts the countdown, continues until the end of the set time, and the flashlight turns off.

Build the circuit as shown, the process is the same as above.