In this oscillator circuit using 3 TTL inverters we have all the conditions for the frequency calculation. Power must be supplied with 5 V. The circuit is from an American TTL documentation.
This circuit was published in an English magazine from 1980. The magazine no longer exists, but...
This circuit, from the ON Semiconductor Thyristor Manual, controls both the speed and direction of...
Other settings like this can be found on this website. This makes use of old operational...