Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1989-11-28
1991-09-03
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307318, 307256, 333 81R, H03K 508, H03K 306
Patent
active
050457330
ABSTRACT:
Switches are cascaded for improved off-state attenuation. The first switch of the cascade comprises an L-type attenuator with series branch including a resistor and a shunt branch including a Zener diode. A bias network coupled to the attenuator and to the second switch of the cascade connection controls the diode bias for operation at a specific forward conduction when the second switch is open and for operation at a specific reverse bias condition when the second switch is closed for causing the attenuator to provide the plural functions of (1) enhancing the switch off-state attenuation, (2) providing over-voltage and overcurrent protection for input transients of either polarity and (3) providing a predetermined output DC level when the second switch is on for establishing the DC bias of a subsequent circuit, such as an amplifier, the DC bias so supplied being in a tracking relationship with DC power supplied to the subsequent circuit.
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Coalter Richard G.
Emanuel Peter M.
Miller Stanley D.
Thomson Consumer Electronics Inc.
Tran Toan
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