Electricity: power supply or regulation systems – Remote sensing
Patent
1975-04-30
1977-08-09
Pellinen, A. D.
Electricity: power supply or regulation systems
Remote sensing
324 46, H01L 4308
Patent
active
040413713
ABSTRACT:
In an arrangement for generating electrical signals by means of two magnetic field-dependent resistors (i.e., field plates) each comprised of a semiconductor compound and each arranged on a ferromagnetic extension fastened on the same pole of a permanent magnet, a particularly configured control element comprised of magnetically soft material is provided for varying the resistance values of the resistors through flux displacement. More particularly, the control element is shaped in the form of a spiral and is arranged on a nonmagnetic rotatable control cam in such a manner that, when the control cam rotates, a part of the spiral control element permeated by the flux of the magnet shifts from the one field plate to the other field plate. Such rotation thus changes the resistance values of the plates, thereby providing a change of the output signal of the arrangement.
REFERENCES:
patent: 3112464 (1963-11-01), Ratajski et al.
patent: 3152261 (1964-10-01), Carlstein
patent: 3681669 (1972-08-01), Ayers
patent: 3934160 (1976-01-01), Borcke
Knox et al., "Reference Position Sensor", IBM TDB, vol. 5, No. 12, May 1963, p. 41.
Pellinen A. D.
Siemens Aktiengesellschaft
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