Electricity: power supply or regulation systems – External or operator controlled – Using an impedance as the final control device
Reexamination Certificate
2005-04-19
2005-04-19
Laxton, Gary L. (Department: 2838)
Electricity: power supply or regulation systems
External or operator controlled
Using an impedance as the final control device
C323S297000, C323S298000, C323S369000, C341S145000, C341S154000
Reexamination Certificate
active
06882136
ABSTRACT:
An impedance network, which includes at least one end terminal, a wiper terminal, a center impedance element, and a first plurality of impedance elements. The wiper terminal provides a tap position at a selected impedance value of the impedance network, selectable at a specified increment value. The first plurality of impedance elements is configured to reduce resistance variation during switching from one tap position to another tap position. The first plurality of impedance element is connected in series in a mirrored configuration about the center impedance element.
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Duan Zhan
Engh Lawrence D.
Nazarian Hagop A.
Tang William
Tsai Chao-Ming
Blakely , Sokoloff, Taylor & Zafman LLP
Laxton Gary L.
Winbond Electronics Corporation
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