This frequency divider by 10 uses discrete components only. Modern equivalent components can be used as the circuit is from an 80's documentation. Nearby frequencies can be used.
This 8 W amplifier with germanium transistors was found in a Japanese documentation from 1967. The...
The Motorola MOC501O optocoupler has a complete amplifier inside the sensor, enabling the...
This circuit appears in several points of our site, including used in practical projects. The...