초록 ▼

A logic selection circuit for selectively matching the transistor logic type of a first interfacing circuit with the transistor logic type of a second interfacing circuit. The logic selection circuit comprises a circuit latching means which latches the level of voltage signal present at the second i

A logic selection circuit for selectively matching the transistor logic type of a first interfacing circuit with the transistor logic type of a second interfacing circuit. The logic selection circuit comprises a circuit latching means which latches the level of voltage signal present at the second interfacing circuit while receiving a signal from the first interfacing circuit. The logic selection circuit further comprises both an NPN transistor and a PNP transistor to ensure that the transistor logic type of the first interfacing circuit and the transistor logic type of the second interfacing circuit may be properly matched. The logic selection circuit disclosed may be utilized in a conventional magnetic proximity sensor which helps to control the movement of a piston within a cylinder.

대표청구항 ▼

[ I claim:] [1.] A logic selection circuit for selectively matching a first transistor logic type of a first interfacing circuit with a second transistor logic type of a second interfacing circuit, thereby allowing said first interfacing circuit and said second interfacing circuit to properly commun

[ I claim:] [1.] A logic selection circuit for selectively matching a first transistor logic type of a first interfacing circuit with a second transistor logic type of a second interfacing circuit, thereby allowing said first interfacing circuit and said second interfacing circuit to properly communicate with each other in an electrical fashion, said logic selection circuit comprising:a control interface line connectable to said first interfacing circuit;a communication interface line connectable to said second interfacing circuit;circuit matching means for selectively matching said first transistor logic type of said first interfacing circuit with said second transistor logic type of said second interfacing circuit; andcircuit latching means for latching a voltage level of a voltage signal present at an input of said circuit matching means when an enable signal is present on said control interface line.