GB1360495A - Method and apparatus for measuring small electric currents - Google Patents

Method and apparatus for measuring small electric currents

Info

Publication number
GB1360495A
GB1360495A GB3087071A GB3087071A GB1360495A GB 1360495 A GB1360495 A GB 1360495A GB 3087071 A GB3087071 A GB 3087071A GB 3087071 A GB3087071 A GB 3087071A GB 1360495 A GB1360495 A GB 1360495A
Authority
GB
United Kingdom
Prior art keywords
cathode
current
grid
tube
potential
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
GB3087071A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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 Philips Electronic and Associated Industries Ltd filed Critical Philips Electronic and Associated Industries Ltd
Publication of GB1360495A publication Critical patent/GB1360495A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01J—ELECTRIC DISCHARGE TUBES OR DISCHARGE LAMPS
    • H01J43/00—Secondary-emission tubes; Electron-multiplier tubes
    • H01J43/04—Electron multipliers
    • H01J43/30—Circuit arrangements not adapted to a particular application of the tube and not otherwise provided for
    • 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
    • H01J37/00—Discharge tubes with provision for introducing objects or material to be exposed to the discharge, e.g. for the purpose of examination or processing thereof
    • H01J37/02—Details
    • H01J37/04—Arrangements of electrodes and associated parts for generating or controlling the discharge, e.g. electron-optical arrangement or ion-optical arrangement
    • H01J37/05—Electron or ion-optical arrangements for separating electrons or ions according to their energy or mass

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Electron Tubes For Measurement (AREA)
  • Artificial Filaments (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Measurement Of Current Or Voltage (AREA)
GB3087071A 1970-07-04 1971-07-01 Method and apparatus for measuring small electric currents Expired GB1360495A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL7009931A NL7009931A (enrdf_load_stackoverflow) 1970-07-04 1970-07-04

Publications (1)

Publication Number Publication Date
GB1360495A true GB1360495A (en) 1974-07-17

Family

ID=19810507

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3087071A Expired GB1360495A (en) 1970-07-04 1971-07-01 Method and apparatus for measuring small electric currents

Country Status (5)

Country Link
JP (1) JPS472042A (enrdf_load_stackoverflow)
DE (1) DE2129304A1 (enrdf_load_stackoverflow)
FR (1) FR2097186A1 (enrdf_load_stackoverflow)
GB (1) GB1360495A (enrdf_load_stackoverflow)
NL (1) NL7009931A (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118243989A (zh) * 2024-05-24 2024-06-25 中广核贝谷科技有限公司 一种光电倍增管的电流测量电路及方法

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5436691B2 (enrdf_load_stackoverflow) * 1974-05-13 1979-11-10
JPS528113A (en) * 1975-07-03 1977-01-21 Toyobo Co Ltd Process for high-speed spinning
JPS5562209A (en) * 1978-10-30 1980-05-10 Toray Ind Inc Melt spinning of ultra-fine fiber

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN118243989A (zh) * 2024-05-24 2024-06-25 中广核贝谷科技有限公司 一种光电倍增管的电流测量电路及方法

Also Published As

Publication number Publication date
NL7009931A (enrdf_load_stackoverflow) 1972-01-06
FR2097186A1 (enrdf_load_stackoverflow) 1972-03-03
JPS472042A (enrdf_load_stackoverflow) 1972-02-01
DE2129304A1 (de) 1972-01-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PLNP Patent lapsed through nonpayment of renewal fees