FLIP-FLOP

R1 = R4 = 1 K
R2 = R3 = 100K
R2 = R3 = 100K
C1 = C2 = 10µF/16V
C1 = C2 = 10μF/16V
Q1 = Q2 = đèn C828 Q1 = Q2 = C828
Lamp Two LEDs