Miscellaneous active electrical nonlinear devices – circuits – and – Gating – Utilizing three or more electrode solid-state device
Reexamination Certificate
2008-09-22
2010-11-30
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Gating
Utilizing three or more electrode solid-state device
C361S093200, C361S093900
Reexamination Certificate
active
07843248
ABSTRACT:
A switch circuit including a first switch, a reference device, a current generating device and a comparator. The first switch has a first resistance and develops a first voltage when a first current is provided through it. The reference device has a second resistance which is a known multiple of the first resistance. The current generating device provides a reference current through the reference device which develops a second voltage having a level indicative of a maximum current level of the first current. The comparator compares the first and second voltages and provides a maximum current indication. An amplifier may be used to force one side of the first switch and the reference device to the same voltage, where the reference device is coupled between an input and an output of the amplifier. The switch circuit may include a calibration mode.
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Levison Roger
Webb Robert W.
Youngblood Douglas L.
Donovan Lincoln
Hernandez William
Intersil America's Inc.
Stanford Gary R.
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