The circuit is from the 1990 Motorola Linear Databook. The circuit can be implemented with other operational amplifiers. The power supply must be symmetrical.
This circuit was found in the Linear Applications Handbook of the National Semiconductor of 1994....
This circuit has been found in operational documentation of the 1970s. The circuit has a fail-safe...
This simple signal injector was found in a Radio Electronics from July 1959. The transistors are...