Amplifiers – With semiconductor amplifying device – Including push-pull amplifier
Reexamination Certificate
2007-06-12
2007-06-12
Mottola, Steven J. (Department: 2817)
Amplifiers
With semiconductor amplifying device
Including push-pull amplifier
Reexamination Certificate
active
11278944
ABSTRACT:
An amplifying circuit, which generates a compensation current based on a detection result of a leakage current flowing between an AC power source for supplying power and a power converting circuit section, includes a main amplifier having transistors and a correction amplifier connected in parallel to the main amplifier. Capacitors are connected between each base of transistors, forming the main amplifier and the correction amplifier, and a ground line, and between an output terminal of the correction amplifier and the ground line, respectively, and an impedance ratio of these capacitors is adjusted, thereby adjusting an amplification ratio.
REFERENCES:
patent: 3335290 (1967-08-01), Fischman et al.
patent: 3858119 (1974-12-01), Engelhardt
patent: S49-92136 (1974-08-01), None
patent: 03-283805 (1991-12-01), None
patent: 05-219758 (1993-08-01), None
patent: 09-266677 (1997-10-01), None
Mottola Steven J.
Sanken Electric Co. Ltd.
Townsend and Townsend and Crew
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