Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1991-12-13
1994-01-11
Wambach, Margaret R.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307354, 307358, 307346, 3072964, 3072965, H05K 301, H05K 5153
Patent
active
052784584
ABSTRACT:
One aspect of the present invention includes a circuit for detecting when an input voltage exceeds a predetermined threshold. The circuit for detecting includes an input for receiving the input voltage. Further, the circuit includes a plurality of switching devices, wherein each of the switching devices comprises a first and second terminal for defining a variable conductive path, and a third terminal for receiving a signal to control said variable conductive path. The plurality of switching devices includes three switching devices. The first switching device has a first terminal coupled to the input and a second terminal coupled to a first node. The second switching device has a first terminal coupled to the first node and a second terminal coupled to a second node. Finally, the third switching device has a first terminal coupled to the second node. Each of the first, second and third switching devices are of like conductivity type, and the second node provides a first voltage if the input voltage is below the predetermined threshold and provides a second voltage if the input voltage is above the predetermined threshold.
REFERENCES:
patent: 4812680 (1989-03-01), Kawashima et al.
patent: 4825099 (1989-04-01), Barton
patent: 5030845 (1991-07-01), Love et al.
patent: 5039875 (1991-08-01), Chang
patent: 5074572 (1991-12-01), Poteet et al.
Holland Wayland B.
Howe Gary L.
Schreck John F.
Donaldson Richard L.
Heiting Leo N.
Lindgren Theodore D.
Texas Instruments Incorporated
Wambach Margaret R.
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