This PLL with operational amplifiers was found in 1969 documentation. The configuration can be adapted to use modern components. The circuit has a gain of 15 V / V and can operate with 10 kHz signals.
This circuit uses an unusual electromechanical component: a mechanical blade resonator. The...
This traditional TTL counter module was found in Internet documentation. The power supply must be 5V...
In the presented circuit it is possible to vary the frequency of the rectangular signal produced. This...