Amplifiers – Combined with automatic amplifier disabling switch means
Reexamination Certificate
2005-09-27
2005-09-27
Tokar, Michael (Department: 2819)
Amplifiers
Combined with automatic amplifier disabling switch means
C330S010000, C330S251000, C330S20700P
Reexamination Certificate
active
06949973
ABSTRACT:
There is provided a signal amplifier capable of restraining the influence of an EMI caused by a distortion of a waveform of an output signal. The signal amplifier comprises an inverter circuit made up of p-channel and n-channel transistors, reference circuits having a circuit configuration corresponding to the inverter circuit and made up of p-channel and n-channel transistors, a selection circuit for selecting the p-channel and n-channel transistors independently with each other with the same combination as the combination of the selection of the p-channel and n-channel transistors in the inverter circuit and the reference circuits, and a selection control circuit for comparing first driving capacity of the p-channel transistor selected in the first reference circuit with second driving capacity of the n-channel transistor selected in the second reference circuit and controlling the selection circuit so as to achieve a balance between the first driving capacity and the second driving capacity on the basis of the result of comparison.
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patent: 6831508 (2004-12-01), Shima
patent: 2001-223537 (2001-08-01), None
Nguyen Khai M.
Rabin & Berdo P.C.
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