Circuitry for industrial logic systems

Details Circuitry for industrial logic systems Circuitry for industrial logic systems

1976-04-19

1977-12-27

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307200A, 307203, 307252B, 307270, 361100, 361101, H03K 1760, H03K 1908, H02H 300

Patent

active

040656837

ABSTRACT:
An industrial solid state logic system having a device for translating low level input signals into high level output signals, the components of the device being arranged so that an output switching unit responds only to current flowing from a source when fed from a logic gate which is adapted to sink current although it has the capability to source current. A light emitting diode is connected in a circuit of the device to indicate the electrical condition of an output switching component of the device.

REFERENCES:
patent: 3513332 (1970-05-01), Snyder
patent: 3643115 (1972-02-01), Kiffmeyer
patent: 3665219 (1972-05-01), Teske
patent: 3751684 (1973-08-01), Struger
Jenkins, "Interface Circuits Drive High-Level Switches from Low-Level Inputs", Electronic Engineering (pub); 5/1971, pp. 45-49.
Heiserman, "Light-Emitting Diodes", Electronics World (pub); 1/1968; pp. 36-37, 66-67.
Armstrong, "TTL Interfacing with GRL 111 and GRL 101", Electronic Applications (pub.); vol. 30, No. 4; 1970; pp. 145-154.

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