Miscellaneous active electrical nonlinear devices – circuits – and – Specific identifiable device – circuit – or system – With specific source of supply or bias voltage
Reexamination Certificate
2007-08-24
2009-10-27
Donovan, Lincoln (Department: 2816)
Miscellaneous active electrical nonlinear devices, circuits, and
Specific identifiable device, circuit, or system
With specific source of supply or bias voltage
C323S313000
Reexamination Certificate
active
07609106
ABSTRACT:
A constant current circuit includes a first current mirror composed of a first transistor formed on a first current path and a second transistor formed on a second current path, a second current mirror composed of a third transistor formed on the first current path and a fourth transistor formed on the second current path, a first diode formed on the first current path, a second diode formed on the second current path, a resistor formed on the second current path, a variable resistance element connected with the first current path and with the second current path, and a feedback unit to control a resistance value of the variable resistance element based on a current flowing through the second current path.
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Donovan Lincoln
Jager Ryan C
McGinn IP Law Group PLLC
NEC Electronics Corporation
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