Amplifiers – With semiconductor amplifying device – Including gain control means
Patent
1993-06-09
1994-03-01
Pascal, Robert J.
Amplifiers
With semiconductor amplifying device
Including gain control means
330 86, H03G 300
Patent
active
052911519
ABSTRACT:
The present invention relates to an amplifier for amplifying an input signal. In a sensor amplifier construction according to the present invention, a series arrangement made up of a resistor and a transistor is inserted in a feedback path for an amplifier, and the collector of the transistor is connected to one input of the amplifier and a capacitor is connected between the emitter and the base of the transistor. According to the above-described arrangement, there is provided a sensor amplifier which can eliminate noise with a small-scale construction.
REFERENCES:
patent: 4441080 (1984-04-01), Saari
patent: 4471324 (1984-09-01), Welland
patent: 4656871 (1987-04-01), Czarnocki
FETs in RC Network tune active filter, Delagrange, p. 76 Electronics, Dec. 7th, 1970.
Amikura Takashi
Fujiwara Akihiro
Ohara Toru
Tamekuni Yasuhiro
Canon Kabushiki Kaisha
Dinh Tan
Pascal Robert J.
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