This circuit is from an Electronics World of 1968. The transistors are of the time and the power is supplied with a voltage of 40 V. The circuit is high fidelity.
This primitive solar radio was found in a Gernsback publication from 1960. The transistor is made...
The signal injector illustrated in the figure uses a single integrated circuit and generates...
This Star Trek red alert circuit was found in the July 1990 issue of Radio Electronics magazine. The...