Level detector

Details Level detector Level detector

1986-08-27

1988-08-09

Shoop, Jr., William M.

Electricity: motive power systems

Motor-reversing

Field circuit control

318318, 318341, 318314, 318254, 73295, 73304R, 324161, 324165, 307116, G05B 1940

Patent

active

047630540

ABSTRACT:
A level detector includes first and second comparators each having two inputs and an output wherein the first comparator receives an input signal and a first reference signal at the two inputs thereof and develops a first comparison signal when the input signal level is greater than the first reference signal level and wherein the second comparator receives the input signal and a second reference signal at the two inputs thereof and develops a second comparison signal when the input signal is less than the second reference signal level. A flip-flop includes first and second inputs coupled to the outputs of the first and second comparators, respectively. The flip-flop develops a high state signal when the first comparator develops the first output signal and develops a low state signal when the second comparator develops the second output signal.

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