Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Patent
1993-03-18
1995-03-14
Sikes, William L.
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
327538, 327 63, 327 65, H03K 501, H03K 5153, H03K 17687
Patent
active
053979354
ABSTRACT:
A bias current supplying circuit having: a differential amplifier for amplifying a difference between potentials at first and second nodes and outputting the amplified difference voltage from a third node, the first node being connected to an output terminal of a bias voltage source for outputting a bias voltage, and the second node being connected to an output terminal from which a bias current is supplied to an external circuit; a negative feedback loop circuit for changing the potential at the second node in accordance with the potential at the third node of the differential amplifier; and a potential dropping circuit connected to the second node for dropping the potential at the second node in response to an external input of a control signal and intercepting a supply of the bias current to the external circuit.
REFERENCES:
patent: 4642482 (1987-02-01), Kasperkovitz et al.
patent: 4972103 (1990-11-01), Barbu
patent: 5189318 (1993-02-01), Tanaka
Abraham Fetsum
Kabushiki Kaisha Toshiba
Sikes William L.
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