Level selective a-c monitoring circuit

Details Level selective a-c monitoring circuit Level selective a-c monitoring circuit

1978-05-17

1980-08-12

Zazworsky, John

Electrical transmission or interconnection systems

Personnel safety or limit control features

Interlock

307359, 328147, 328150, H03K 5153

Patent

active

042175062

ABSTRACT:
The present invention provides a circuit for monitoring an a-c input signal to determine if the signal level falls within a selectable level range.

REFERENCES:
patent: 3267375 (1966-08-01), Olsen
patent: 3544983 (1970-12-01), Wallace, Jr. et al.
patent: 3813665 (1974-05-01), Parfomak et al.
B. P. Fenton et al., AC Current Detector Circuit, IBM Technical Disclosure Bulletin, vol. 19, No. 8, Jan. 1977, p. 3227.

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