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2 370 880

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IPC

H03F3/70(2006-01-01)

H03F3/45(2006-01-01)

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Application

2008131368/09, 2008-07-31

(24)

Start date

2008-07-31

(22)

Actual filing date

2008-07-31

(45)

Published

2009-10-20

(72)

Inventor

Radchik Igor' IosifovichTarakanov Vjacheslav MikhajlovichSkvortsov Oleg BorisovichMorev Vjacheslav IvanovichKorolev Sergej AlekseevichGuzeev Andrej NikolaevichTikhomirov Vjacheslav NikolaevichUstinov Roman AlekseevichJanchich Vladimir VladimirovichIvanov Aleksandr Anatol'EvichSmirnov Sergej IvanovichLevin Nikolaj Ivanovich

(73)

Holder

Obshchestvo S Ogranichennoj Otvetstvennost'Ju

DIFFERENTIAL CHARGE AMPLIFIER FOR PIEZOELECTRIC DETECTOR (VERSIONS) Russian patent published in 2009 - IPC H03F3/70 H03F3/45

Abstract RU 2370880 C1

FIELD: electric engineering.

SUBSTANCE: application: to accord high-resistance inlet of piezoelectric detector and measurement equipment. Differential charge amplifier comprises the first and second operational amplifiers, limiting unit, the first and second inlets of which are inlets of differential charge amplifier, the first and second resistors, four feedback resistors, four feedback capacitors, five additional resistors and three additional capacitors, auxiliary resistor and auxiliary capacitor. Moreover, product of capacitance value of the third feedback capacitor by value the third feedback resistor resistance, value of the fourth feedback capacitor capacitance by value of the first feedback resistor resistance, value of the first additional capacitor capacitance by value of the first additional resistor resistance, value of the second additional capacitor capacitance by value of the second additional resistor resistance, value of auxiliary capacitor capacitance by value of auxiliary resistor resistance is more than value of reverse lower working border frequency of differential charge amplifier.

EFFECT: expansion of dynamic range of measured vibration speeds and higher validity of functioning at quite low level of internal noise.

20 cl, 12 dwg

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RU 2 370 880 C1

Authors

Radchik Igor' Iosifovich

Tarakanov Vjacheslav Mikhajlovich

Skvortsov Oleg Borisovich

Morev Vjacheslav Ivanovich

Korolev Sergej Alekseevich

Guzeev Andrej Nikolaevich

Tikhomirov Vjacheslav Nikolaevich

Ustinov Roman Alekseevich

Janchich Vladimir Vladimirovich

Ivanov Aleksandr Anatol'Evich

Smirnov Sergej Ivanovich

Levin Nikolaj Ivanovich

Dates

2009-10-20—Published

2008-07-31—Filed