Hall-effect integrated circuit switch

Details Hall-effect integrated circuit switch Hall-effect integrated circuit switch

1978-04-24

1979-01-09

Heyman, John S.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307310, 330 6, H03K 1700

Patent

active

041340302

ABSTRACT:
An integrated circuit in which the Hall-Effect device and the sensing circuit can be incorporated on a single monolithic chip includes a Hall-Effect generator responsive to a magnetic flux change for generating a Hall-Effect voltage. A differential amplifier and current mirror circuit are coupled to the Hall-Effect device in order to vary or track the threshold voltage of the differential amplifier circuit in accordance with the output voltage from the Hall-Effect device irrespective of current changes in the Hall-Effect device due to temperature variations.

REFERENCES:
patent: 3573495 (1971-04-01), Xylander
patent: 3613021 (1971-10-01), Scheidt
patent: 3816766 (1974-06-01), Anselmo et al.
IBM Tech. Dsclre. Bttn., Hall Tranducer Circuit With Voltage and Current Regulation, by Braun et al., vol. 17, No. 11, 4/1975, p. 3232.

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