This circuit, for frequencies up to 100 kHz, was found in American documentation from 1970. The circuit can serve as a reference for projects with modern equivalent components.
Found in American documentation from 1969, this circuit uses logic inverters to obtain sequences of 4...
This circuit was obtained from a technical documentation from Texas Instruments. The TLE2201 is...
This circuit was found in Philips documentation from 1967. The phototransistor is from that time,...