This receiver is from a 1924 Gernsback publication. The receiver has good efficiency when powered by the indicated voltages. Listening is through a high-impedance phone.
This circuit turns on a lamp when the night comes and turn it off in the morning. The circuit...
This circuit was obtained from an American publication of the 80's. The integrated circuit is of the...
In the figure we have a traditional flip-flop configuration implemented with two operational...