
วงจร Pluse Timer

วงจร Pluse Timer
R1 = 1 Meg, Preset Pot R2 = 10K R3,R4 = 1K C1 = 10uF, 16V C2 = 0.01uF T1 = BC547 (Gen Purp NPN) T2 = 2N2222 (Hi Current NPN) D1 = 1N4001 (Gen Purp Si) IC1 = 555 (Lo-Power version) RLA1 = Relay, 9V (amps of your choice)