Found in a 1968 Electronic Design, this circuit makes use of an unusual ultrasonic delay line today.
This circuit was found in a 1980s American documentation. The circuit is based on integrated CMOS 4001...
The sensor component used in this project is not common today as it is an 80's design. The circuit...
This circuit was found in the 1969 RCA thyristor manual. The circuit has a limiter (clipping) with two 12...