This receiver uses old transistors that are equivalent to BC548 and BC558. The photo diode is of any type. The receiver can be used on a highly sensitive audio link.
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...