Consider the circuit shown. You recognize surely two monoflops. The OUT output of the first monoflop is connected through the capacitor C4 with the TRIGGER input of the second monoflop.
![]() Circuit diagram signal delay with two NE555. |
If you press the pushbutton switch S1, LED1 and LED2 displays the result of the first monoflop. LED3 and LED4 repeat the behaviour with a delay of 5 seconds.
During the switching time of the first monoflop, the OUT output of the IC1 is HIGH. When it falls after 5 sec. to LOW, this is the signal for the second monoflop.
![]() Circuit signal delay with two NE555. (Enlarge) |
But now to astable multivibrators...