Signal comparator circuit

Details Signal comparator circuit Signal comparator circuit

1976-06-07

1978-01-17

Heyman, John S.

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307364, 328147, 358 27, H03K 520

Patent

active

040694321

ABSTRACT:
A plurality of comparators are used to compare first, second, and third input signals against a first and second predetermined signal level threshold. The outputs of the comparators are combined to ascertain the difference in signal amplitude between the first, second, and third input signals with respect to the first and second predetermined signal thresholds. If the amplitude deviation of the first, second, and third signals are within the threshold limits, a control signal adjusts the characteristics of the first and second signal channels to match the amplitude of the first and second signals to the amplitude of the third signal to make the three input signals equal. If the first, second, and third input signal deviation is without the threshold limits, the input signals are assumed correct, and no adjustment is made.

REFERENCES:
patent: 3237025 (1966-02-01), Clapper
patent: 3758867 (1973-09-01), Schulz
patent: 3965388 (1976-06-01), Brisk

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