Dynamic magnetic information storage or retrieval – General recording or reproducing – Specifics of the amplifier
Reexamination Certificate
2008-04-15
2008-04-15
Korzuch, William (Department: 2627)
Dynamic magnetic information storage or retrieval
General recording or reproducing
Specifics of the amplifier
C360S046000, C330S085000
Reexamination Certificate
active
11652184
ABSTRACT:
An amplifier system with feedback current cancellation comprises an amplifier, a feedback network, first and second unity-gain buffers, a second resistance, and a current mirror. The amplifier includes an input, an output, and at least one stage. The feedback network includes a first resistance having one end that communicates with the input of the amplifier and an opposite end that communicates with the output of the amplifier. The first and second buffers each include an input and an output. The inputs of the first and second buffers communicate with the output and the input of the amplifier, respectively. The second resistance communicates with the outputs of the first and second buffers. The current mirror provides a current at the input of the amplifier that is proportional to a second current flowing through the second resistance.
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Korzuch William
Marvell International Ltd.
Negrón Daniell L.
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