Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1981-12-21
1983-08-16
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307234, H03K 526
Patent
active
043994121
ABSTRACT:
A duty cycle monitor circuit which detects variations in the duty cycle of a monitored pulse by comparing its duty cycle with the pulse width of an external reference signal. A detection circuit detects the duty cycle variation of the monitored pulse after being periodically reset by the external reference signal. A storage circuit is clocked by the reference signal and operates to store the output signals of the detection circuit. Upon detection of a duty cycle failure the monitor can be cleared by external control or detection of a monitored pulse having a valid duty cycle.
REFERENCES:
patent: 3091738 (1963-05-01), Relis et al.
patent: 3735271 (1973-05-01), Leibowitz
patent: 3790881 (1974-02-01), Smith
patent: 3946322 (1976-03-01), Katz
patent: 3970944 (1976-07-01), Huellwegen
Black Robert J.
GTE Automatic Electric Labs Inc.
Hendricks Gregory G.
Heyman John S.
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