Device for reading a set of resistive elements featuring interrogation and voltage stabilization circuits
AssigneeThomson-CSF
InventorsJoseph Colineau, Thierry Valet
Life of this patent
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Abstract
In a device for the reading of a set of resistive elements (1.0, . . . , 1.n) in which an interrogation potential (V.sub.0) is applied at each instant to an element while a reference potential (v) is applied to the other elements, a stabilization circuit (CS) operates to keep the reading ports (L.0, . . . , L.n) at the reference potential. The present invention may find particular application to the reading of the elementary magnetoresistive heads of a magnetic reading head.
Claims8
A device for the reading of a set of resistive elements, each comprising an interrogation port that can be connected to an electrical interrogation source and a reading port connected to a voltage detection circuit that enables the resistance of each resistive element to be measured, wherein:
- the interrogation circuit successively applies an interrogation potential to the interrogation port of each resistive element while it applies a reference potential to the other resistive elements;
- and wherein:
- said device comprises at least one voltage stabilization circuit that is connected to the reading ports of the resistive elements and that keeps these ports substantially at the reference potential.
A reading device according to claim I, wherein the reference potential is a zero value potential.
Dependencies are inferred from the claim text.