Browse Prior Art Database

Input Transient Protection for Switch And Cable Assembly

IP.com Disclosure Number: IPCOM000061919D
Original Publication Date: 1986-Aug-01
Included in the Prior Art Database: 2005-Mar-09
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Kraus, RA: AUTHOR [+3]

Abstract

Described is a suppression device for use with an analogue or digital data acquisition system which is exposed to severe electrical transients. The device limits the magnitude of these electrical transients which can cause destruction of hardware and distortion of digital data.

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Input Transient Protection for Switch And Cable Assembly

Described is a suppression device for use with an analogue or digital data acquisition system which is exposed to severe electrical transients. The device limits the magnitude of these electrical transients which can cause destruction of hardware and distortion of digital data.

The suppression device disclosed herein is configured as a discrete module inserted between the input signal end of a cable and the external test interface. It prevents electrical damage to analogue or digital data acquisition systems due to extreme over voltage or electrical transients.

Referring to the drawing the suppression device 1 is shown positioned between test interface 3 and the input signal end test cable 2 which is connected to test equipment 4. Electrical noise injected into the test interface is conducted into the suppression device via one of three individual circuits A, B, an Within the suppression device, a metal oxide varistor (MOV) is connected from each incoming circuit to ground. If the incoming electrical transient exceeds the breakdown potential of the MOV, it will turn it on, thereby clamping the circuit voltage to a safe value and protecting the circuit.

Disclosed anonymously.

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