This amplifier is from Motorola's 1990 Linear Databook. The circuit can be used with operating amplifiers with the same characteristics and the power supply must be symmetrical.
The idea of this simple circuit is to use a tape recorder to key a transmitter in code emission....
November 10, 2015 - Mouser Electronics, Inc. is now offering the RN4677 dual-mode...
This circuit was found in na old latin american magazine. The circuit uses two germanium...