Varactor device

Details Varactor device Varactor device

2008-05-27

2008-05-27

Richards, N. Drew (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Specific identifiable device, circuit, or system

Utilizing two electrode solid-state device

Reexamination Certificate

active

07378901

ABSTRACT:
A varactor device includes a capacitance circuit having a capacitor set and a first transistor connected across the capacitor set; a first variable resistor; and a second transistor coupled to the first transistor and connected in series to the first variable resistor for feeding an output signal generated by applying voltage to the capacitance circuit back to the first transistor, thereby controlling a gain of the first transistor by tuning the first variable resistor.

REFERENCES:
patent: 5875126 (1999-02-01), Minch et al.
Linsley, Trevor, Basic Electrical Installation Work, Elsevier Publishing Company, 2005 edition, ISBN 0750666242, p. 59.

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