This circuit was obtained from an 80's Radio Electronics. The circuit decodes “scrambled” or sinusoidal encoded signals by providing an audio signal at the output.
This touch switch appears elsewhere on this site from various documentation. This is from an 80's...
This solar powered circuit was found in a 1991 documentation. The transistor is a general purpose...
April 2017 - Microchip's new 4-port KSZ8864 switches for VoIP, Games, Automotive Ethernet,...