Solid state magnetic microswitch

Details Solid state magnetic microswitch Solid state magnetic microswitch

1984-12-14

1987-09-01

Goldberg, E. A.

Electrical resistors

Resistance value responsive to a condition

Magnetic field or compass

335207, H05B 4300, H01H 900

Patent

active

046911855

ABSTRACT:
Fluid flow indicator is provided in which a fluid pressure to position transducer moves a permanent magnet from a no-flow position to a flow position in response to fluid pressure. The change in the position in the permanent magnet changes the intensity and polarity of the magnetic field that the permanent magnet places upon a Hall effect semiconductor; so that a switching function results as a function of fluid pressure differential causing no-flow and flow conditions. The change in magnitude and polarity of the magnetic field between first and second distances from one surface of the permanent magnet is increased by providing an opening through the permanent magnet and by providing a magnetic device near the opposite surface of the magnet.

REFERENCES:
patent: 3680026 (1972-07-01), Masuda et al.

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