Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1984-04-11
1986-08-12
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307200B, 307297, 307491, 307363, 307544, 307591, 361 86, 361 92, G01R 19165
Patent
active
046058664
ABSTRACT:
Current in the drain-source path of a microwave high-power GaAs MESFET is controlled by a regulating circuit including an integrating differential amplifier whose output controls the gate of the MESFET. One input of the differential amplifier is supplied with a fraction of the supply voltage, and the other is supplied with a voltage dependent upon the current to be controlled. During switch-on and switch-off of the supply voltage, the risk of Gunn effect oscillation of the MESFET is avoided by a switching circuit which controls the differential amplifier to maintain substantially zero drain-source current when the supply voltage is below a predetermined level less than its nominal level.
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patent: 4290005 (1981-09-01), Arumugham
patent: 4322634 (1982-03-01), Kaire et al.
patent: 4428020 (1984-01-01), Blanchard, Jr.
patent: 4434378 (1984-02-01), Ballentine, Jr.
patent: 4449067 (1984-05-01), Nishikawa
patent: 4493000 (1985-01-01), Edwards
patent: 4510549 (1985-04-01), Tedesco
Haley R. John
Hudspeth D. R.
Miller Stanley D.
Northern Telecom Limited
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