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 that emits siren sound can be used in a fire alarm. We found it in an old American...
Launched in 2017 the Microchip CL88020 is an LED driver optimized for 120 VAC input applications with an...
This circuit was found in Electronics Handbook, Vol XIII 1993 and consists of a simple direction...