We found this frequency meter circuit in a 1974 documentation. The circuit is powered by 12 V and has 8 digits. Changes can be made using a prescaler to reach higher frequencies.
This circuit is used to output communications receivers that use low-impedance headphones or...
Based on NXP 74HC logic, this circuit can be adapted for various uses. The circuit can also be...
We find this circuit in an old technical documentation. The circuit can be drawn up with other...