This circuit was found in a 1967 US documentation. The circuit applies to modern general purpose transistors. The circuit has no offset. The power supply must be symmetrical.
This circuit can be controlled by an external signal which allows its use as a shield. The circuit...
This circuit aims to take advantage of two old telephone sets in an efficient domestic intercom...
This circuit was obtained in the 1990 Motorola Linear Databook. The circuit uses a 139 series...