Logic selection circuit

Details Logic selection circuit Logic selection circuit

1996-07-22

1998-04-14

Nguyen, Tan T.

Electronic digital logic circuitry

Interface

326 63, 326 75, 326 89, H03K 190175

Patent

active

057397040

ABSTRACT:
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.

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