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.
This regulator can use BD'136 as the main transistor and as a reference next to a BC548 zener. The...
This circuit was obtained in a 80s RCA documentation. The circuit uses components from that time....
This circuit appears several times on our website and in this section, for various purposes and minor...