Evaluation of characteristics of an HV electrometric amplifier with low input current

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F11%3APU93762" target="_blank" >RIV/00216305:26220/11:PU93762 - isvavai.cz</a>

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Evaluation of characteristics of an HV electrometric amplifier with low input current

Popis výsledku v původním jazyce

In certain special applications, for example in various fields of chemistry, it is necessary to measure voltage in the order of hundreds of volts from a high-impedance source. Standard electrometric operational amplifiers cannot be used as their input range is limited to the maximum of ten volts. Furthermore, it is impossible to increase the input range by a voltage divider in situations when the required input resistance is, for example, 10^14 Ohm. A common resistive divider in the input of an operational amplifier typically shows the maximum input resistance of 10^12 Ohm. A special circuit arrangement can be used in which the amplifier supply voltage is dynamically shifted with the input voltage. This configuration saves the high input resistance ofthe applied electrometric amplifier and extends the input voltage range to the desired value. In our configuration, the extended range is +-300 V. The proposed design of an HV electrometric amplifier utilizes a high-voltage differential a

Název v anglickém jazyce

Evaluation of characteristics of an HV electrometric amplifier with low input current

Popis výsledku anglicky

In certain special applications, for example in various fields of chemistry, it is necessary to measure voltage in the order of hundreds of volts from a high-impedance source. Standard electrometric operational amplifiers cannot be used as their input range is limited to the maximum of ten volts. Furthermore, it is impossible to increase the input range by a voltage divider in situations when the required input resistance is, for example, 10^14 Ohm. A common resistive divider in the input of an operational amplifier typically shows the maximum input resistance of 10^12 Ohm. A special circuit arrangement can be used in which the amplifier supply voltage is dynamically shifted with the input voltage. This configuration saves the high input resistance ofthe applied electrometric amplifier and extends the input voltage range to the desired value. In our configuration, the extended range is +-300 V. The proposed design of an HV electrometric amplifier utilizes a high-voltage differential a

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

JA - Elektronika a optoelektronika, elektrotechnika

OECD FORD obor

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Projekt

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Návaznosti

Z - Vyzkumny zamer (s odkazem do CEZ)<br>S - Specificky vyzkum na vysokych skolach

Rok uplatnění

2011

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Progress In Electromagnetics

ISSN

1559-9450

e-ISSN

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Svazek periodika

2011

Číslo periodika v rámci svazku

2011

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

5

Strana od-do

995-999

Kód UT WoS článku

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EID výsledku v databázi Scopus

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