We found this circuit in an Electronic Design. The main integrated circuit is the 4017. The frequencies are determined by the RC circuits as well as the duration of the generated pulse train.
This circuit is from a 1976 application. The circuit transfers DC signals with total isolation and can be...
This very interesting project was obtained in a 1980 publication. It consists of a device that is...
This modulated transmitter for a light beam communication system was found in the 1991 Electronics...