Oscillator HA7210 (CB22402E)

This circuit is from an old documentation and can be used to generate signals in different frequency bands.

Who is the fast (CB9809E)
This simple TTL circuit indicates which was the first to press one of the four pressure switches. The...
Unijunction transistor sequential timer (CB21400E)
This circuit was found in Motorola documentation from 1968. Transistors can be modern equivalents, just...
Square generator with 2N2646 (CB23919E)
In this circuit, a unijunction transistor controls a multivibrator providing a rectangular signal...