Injection Current Switch Logic
Original Publication Date: 1981-Nov-01
Included in the Prior Art Database: 2005-Feb-12
The logic circuit, based on a current switch, receives its power via PN transistors, the emitters and bases of which are connected in parallel. The current sinks are formed by NPN transistors controlled by an additional PNP transistor T8 of the power supply circuit. The reference voltage Vref of the current switch equals the base voltage of the PNP transistors of the power supply circuit.