Signal generating apparatus and method

Miscellaneous active electrical nonlinear devices – circuits – and – Specific input to output function

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Details

327352, 327355, 327361, 327403, 327407, H03K 1794

Patent

active

058865594

ABSTRACT:
Signal generating apparatus comprises a linear series of Hall-effect switches (44) arranged as a plurality of linear arrays in discrete probes (46a, 46b . . . 46n) which are butted end to end. Each switch is closed when in proximity of an actuating magnet (40) movable along the series of switches. In each array a resistance chain (66) is linked at intervals to the switches. Movement of the magnet along an array thereby gives a progressively changing voltage on an output line (5) from the resistance chain as a cumulative signal indicating the position of the magnet. When the magnet moves from one array to the succeeding array after generating a maximum cumulative signal from said one array, that signal is maintained by a latch connection (56) between the two arrays. A cumulative signal representing the magnet position relative to the complete series of switches can thus be generated. The arrays are powered in parallel so that it is possible to extend substantially the total number of switches or indicating points in the in the apparatus.

REFERENCES:
patent: 3736515 (1973-05-01), Kadron et al.
patent: 3783392 (1974-01-01), Drake et al.
patent: 4589282 (1986-05-01), Dumery
patent: 4627283 (1986-12-01), Nishida
patent: 5546042 (1996-08-01), Tedrow et al.

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