In the circuit shown, you use the NOT gates of a C-MOS 4069.
![]() Circuit of an astable multivibrator of NOT gates. (Enlarge) |
![]() Circuit diagram of an astable multivibrator of NOT gates. |
If you connect the battery, the LED begins to flash. The oscillation period t is determined by the capacitor C1 and resistor R2. You calculate t with the formula...
t = R1C1 × 2.2
This circuit is often used in test environments because it is simple to set up.
However, there are some disadvantages...
The next circuit prevents these problems...