This 6-tube two-channel amplifier was found in an American documentation from 1947. The circuit is two-channel with a separation of bass and treble.
We found this circuit in the 1977 RCA Solid State ICs. The circuit consists of a current amplifier with...
This circuit can serve as a basis for a robot that follows a line on the ground. The circuit has...
We found this circuit in the 1995 Encyclopedia of Electronic Circuits. The circuit triggers a...