Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1982-04-22
1984-05-01
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
3072383, 340362, 340363, 365228, H03K 1722, H03K 1730, H03K 17687
Patent
active
044463812
ABSTRACT:
A circuit and technique provided as part of an integrated circuit for assuring that the circuit's many bistable elements are properly initialized into their desired state when the power is turned on to the circuit. An initialization signal is developed for forcing the bistable element to their pre-determined states as the voltage of the power source is brought up from zero to its full value. This is accomplished by using another bistable element to monitor the rise in the supply voltage and turn off the initialization signal only after the supply voltage has risen well above the threshold voltage of the various bistable elements on the circuit. Hysteresis is provided in order to prevent the initialization signal from turning on if the supply voltage temporarily dips below that at which the monitor element turns off the initiation signal.
REFERENCES:
patent: 4099068 (1978-07-01), Kobayashi et al.
patent: 4140930 (1979-02-01), Tanaka
patent: 4232236 (1980-11-01), Yomogida et al.
patent: 4366560 (1982-12-01), McDermott et al.
patent: 4386281 (1983-05-01), Terry
Heyman John S.
Zilog Inc.
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