GB1422680A - Current measuring circuit and method - Google Patents

Current measuring circuit and method

Info

Publication number
GB1422680A
GB1422680A GB5523573A GB5523573A GB1422680A GB 1422680 A GB1422680 A GB 1422680A GB 5523573 A GB5523573 A GB 5523573A GB 5523573 A GB5523573 A GB 5523573A GB 1422680 A GB1422680 A GB 1422680A
Authority
GB
United Kingdom
Prior art keywords
switch
amplifier
spectrometer
meter
integrator
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.)
Expired
Application number
GB5523573A
Other languages
English (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.)
Varian Medical Systems Inc
Original Assignee
Varian Associates Inc
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 Varian Associates Inc filed Critical Varian Associates Inc
Publication of GB1422680A publication Critical patent/GB1422680A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/0023—Measuring currents or voltages from sources with high internal resistance by means of measuring circuits with high input impedance, e.g. OP-amplifiers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J49/00—Particle spectrometers or separator tubes
    • H01J49/02—Details
    • H01J49/022—Circuit arrangements, e.g. for generating deviation currents or voltages ; Components associated with high voltage supply

Landscapes

  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Electron Tubes For Measurement (AREA)
GB5523573A 1972-11-29 1973-11-28 Current measuring circuit and method Expired GB1422680A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US00310471A US3832642A (en) 1972-11-29 1972-11-29 Current measuring circuit and method

Publications (1)

Publication Number Publication Date
GB1422680A true GB1422680A (en) 1976-01-28

Family

ID=23202664

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5523573A Expired GB1422680A (en) 1972-11-29 1973-11-28 Current measuring circuit and method

Country Status (4)

Country Link
US (1) US3832642A (enExample)
DE (1) DE2358818A1 (enExample)
FR (1) FR2208188A1 (enExample)
GB (1) GB1422680A (enExample)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3935532A (en) * 1974-12-16 1976-01-27 Xerox Corporation Automatic zeroing electrometer
US4751455A (en) * 1985-12-04 1988-06-14 Analog Devices, Inc. Low frequency noise measurement system using sliding pole for fast settling
US5572118A (en) * 1995-06-29 1996-11-05 Mks Instruments, Inc. Charge rate electrometer including means for substantially eliminating leakage currents
US5712480A (en) * 1995-11-16 1998-01-27 Leco Corporation Time-of-flight data acquisition system
US7501621B2 (en) * 2006-07-12 2009-03-10 Leco Corporation Data acquisition system for a spectrometer using an adaptive threshold
CN102347198B (zh) * 2010-08-04 2014-05-21 江苏天瑞仪器股份有限公司 质谱仪中灯丝发射电流稳定控制电路
CN111443268A (zh) * 2020-05-20 2020-07-24 南京工程学院 一种基于超高频电磁波的电力系统污闪检测电路
CN121164706B (zh) * 2025-11-21 2026-02-27 成都睿宝电子科技有限公司 一种用于四极杆质谱仪的电流测量电路及装置

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3131349A (en) * 1954-02-23 1964-04-28 Applied Physics Corp Spectrophotometer pulse amplitude ratio measuring means with feedback amplifier for noise and drift compensation
US3321628A (en) * 1964-09-18 1967-05-23 James E Webb Baseline stabilization system for ionization detector
US3390302A (en) * 1965-10-23 1968-06-25 Hewlett Packard Co Display stabilizer

Also Published As

Publication number Publication date
DE2358818A1 (de) 1974-05-30
FR2208188A1 (enExample) 1974-06-21
US3832642A (en) 1974-08-27

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLE Entries relating assignments, transmissions, licences in the register of patents
PCNP Patent ceased through non-payment of renewal fee