This sophisticated transmitter was found in the June 1993 issue of Electronics Now magazine. The transmitter consists of a dedicated integrated circuit of the time.
We found this circuit in a 1966 US documentation. It simulates a variable capacitor that can vary...
This Hughes circuit is from 1968. Equivalent modern components can be used. The input impedance is...
This conventional 3-terminal regulator circuit was found in an Electronics Now from the 90's. The...