FR2258640A1 - Negative ion flux measuring device - has electronic valve connected through amplifier to digital voltmeter - Google Patents

Negative ion flux measuring device - has electronic valve connected through amplifier to digital voltmeter

Info

Publication number
FR2258640A1
FR2258640A1 FR7401801A FR7401801A FR2258640A1 FR 2258640 A1 FR2258640 A1 FR 2258640A1 FR 7401801 A FR7401801 A FR 7401801A FR 7401801 A FR7401801 A FR 7401801A FR 2258640 A1 FR2258640 A1 FR 2258640A1
Authority
FR
France
Prior art keywords
amplifier
digital voltmeter
measuring device
negative ion
valve connected
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
FR7401801A
Other languages
French (fr)
Other versions
FR2258640B1 (en
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BAER GUY FR
Original Assignee
BAER GUY FR
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BAER GUY FR filed Critical BAER GUY FR
Priority to FR7401801A priority Critical patent/FR2258640A1/en
Publication of FR2258640A1 publication Critical patent/FR2258640A1/en
Application granted granted Critical
Publication of FR2258640B1 publication Critical patent/FR2258640B1/fr
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01T—MEASUREMENT OF NUCLEAR OR X-RADIATION
    • G01T1/00—Measuring X-radiation, gamma radiation, corpuscular radiation, or cosmic radiation
    • G01T1/16—Measuring radiation intensity
    • G01T1/185—Measuring radiation intensity with ionisation chamber arrangements

Landscapes

  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • High Energy & Nuclear Physics (AREA)
  • Molecular Biology (AREA)
  • Spectroscopy & Molecular Physics (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)

Abstract

The grid of a valve in a measuring circuit is connected through a selector (51) to suitable matching resistors for sources of negative ions (N). The valve cathode is biased at -60 volts while the screen is supplied with +60 volts through a potentiometer (P1) which is used to null the output. The anode is isolated from potentials and is connected through a potentiometer (P2) to an integrated circuit pre-amplifier (CI) whose output is connected to a power amplifier comprising four transistors (T1, 2, 3, 4). The output is converted to a voltage by a resistor (R4) in series with a capacitor (C4) for application to a digital voltmeter (VN).
FR7401801A 1974-01-18 1974-01-18 Negative ion flux measuring device - has electronic valve connected through amplifier to digital voltmeter Granted FR2258640A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7401801A FR2258640A1 (en) 1974-01-18 1974-01-18 Negative ion flux measuring device - has electronic valve connected through amplifier to digital voltmeter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7401801A FR2258640A1 (en) 1974-01-18 1974-01-18 Negative ion flux measuring device - has electronic valve connected through amplifier to digital voltmeter

Publications (2)

Publication Number Publication Date
FR2258640A1 true FR2258640A1 (en) 1975-08-18
FR2258640B1 FR2258640B1 (en) 1978-01-06

Family

ID=9133687

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7401801A Granted FR2258640A1 (en) 1974-01-18 1974-01-18 Negative ion flux measuring device - has electronic valve connected through amplifier to digital voltmeter

Country Status (1)

Country Link
FR (1) FR2258640A1 (en)

Also Published As

Publication number Publication date
FR2258640B1 (en) 1978-01-06

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Legal Events

Date Code Title Description
ST Notification of lapse