This receiver was found in a Popular Electronics from the 90's. Its different configuration shows a tuning circuit after the tube that works as an aperiodic amplifier. Observe supply voltages.
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...