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 figure shows how to couple two TTL circuits using an optical coupler to obtain isolation. The...
We found this circuit in an English publication from 1963. The circuit uses germanium transistors of the...
This two-port configuration of the 4001 was found in the April 1988 issue of Radio Electronics magazine....