Amplifiers – Signal feedback – Amplifier in signal feedback path
Patent
1996-03-14
1998-07-14
Mullins, James B.
Amplifiers
Signal feedback
Amplifier in signal feedback path
330105, 318678, H03F 134
Patent
active
057810680
ABSTRACT:
A transadmittance amplifier provides an output current that is proportional to an input voltage level. The output current drives a coil of an electric motor (the load) through a sense resistor, the voltage drop across the sense resistor providing an indication of the amount of current flowing through the coil. The indication provided by the sense resistor is applied across the differential input terminals of a feedback amplifier, which responds by outputting a feedback signal proportional to the output current. In one embodiment, the maximum output current is increased by providing a pair of complementary drive amplifiers.
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Mullins James B.
Nikon Corporation
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