This is a two-input audio switching circuit. The operational can be of any type and more entries can be added. The power supply must be symmetrical.
Mouser has a huge list of sensors for the most diverse applications such as automation, IoT,...
This low-noise, low-drift amplifier was found in a 90's EDN. It can be implemented with modern...
This converter for the 150 MHz band was found in an American documentation. Transistors are...