Apparatus for comparing voltages

Details Apparatus for comparing voltages Apparatus for comparing voltages

1974-12-04

1977-03-29

Heyman, John S.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307235V, 328148, 328150, H03K 5153, H03K 508

Patent

active

040151417

ABSTRACT:
Apparatus for comparing voltages with predetermined upper and lower threshold levels is described. A single differential circuit is connected to a junction point in a first voltage divider, which determines one of the above threshold levels. The differential circuit produces a first output signal level when that threshold value is exceeded. A transistor is connected to a junction point of a second voltage divider, which determines the other threshold level, as to have its conducting state controlled thereby. The transistor is rendered conductive when the other threshold level is exceeded switching the output signal.

REFERENCES:
patent: 3309531 (1967-03-01), Hearn et al.
patent: 3354448 (1967-11-01), Brolin
patent: 3515899 (1970-06-01), May
patent: 3553491 (1971-01-01), Schulz
patent: 3679912 (1972-07-01), Tenenbaum
patent: 3725795 (1973-04-01), Mesenhimer
patent: 3733498 (1973-05-01), Watson
patent: 3789242 (1974-01-01), Cantor
patent: 3806915 (1974-04-01), Higgins et al.

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