GB2214644B - Voltmeters - Google Patents

Voltmeters

Info

Publication number
GB2214644B
GB2214644B GB8800869A GB8800869A GB2214644B GB 2214644 B GB2214644 B GB 2214644B GB 8800869 A GB8800869 A GB 8800869A GB 8800869 A GB8800869 A GB 8800869A GB 2214644 B GB2214644 B GB 2214644B
Authority
GB
United Kingdom
Prior art keywords
voltmeters
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 - Fee Related
Application number
GB8800869A
Other versions
GB2214644A (en
GB8800869D0 (en
Inventor
Sueur Eric John Le
Krzysztof Jerzy Less
Martin Roscoe Sellars
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.)
Xerox Corp
Original Assignee
Xerox Corp
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 Xerox Corp filed Critical Xerox Corp
Priority to GB8800869A priority Critical patent/GB2214644B/en
Publication of GB8800869D0 publication Critical patent/GB8800869D0/en
Publication of GB2214644A publication Critical patent/GB2214644A/en
Application granted granted Critical
Publication of GB2214644B publication Critical patent/GB2214644B/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
    • G01R29/24—Arrangements for measuring quantities of charge
    • 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
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R5/00—Instruments for converting a single current or a single voltage into a mechanical displacement
    • G01R5/28—Electrostatic instruments

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Developing For Electrophotography (AREA)
GB8800869A 1988-01-15 1988-01-15 Voltmeters Expired - Fee Related GB2214644B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB8800869A GB2214644B (en) 1988-01-15 1988-01-15 Voltmeters

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB8800869A GB2214644B (en) 1988-01-15 1988-01-15 Voltmeters

Publications (3)

Publication Number Publication Date
GB8800869D0 GB8800869D0 (en) 1988-02-17
GB2214644A GB2214644A (en) 1989-09-06
GB2214644B true GB2214644B (en) 1991-11-27

Family

ID=10630008

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8800869A Expired - Fee Related GB2214644B (en) 1988-01-15 1988-01-15 Voltmeters

Country Status (1)

Country Link
GB (1) GB2214644B (en)

Also Published As

Publication number Publication date
GB2214644A (en) 1989-09-06
GB8800869D0 (en) 1988-02-17

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Legal Events

Date Code Title Description
PCNP Patent ceased through non-payment of renewal fee
728C Application made for restoration (sect. 28/1977)
728A Order made restoring the patent (sect. 28/1977)
PCNP Patent ceased through non-payment of renewal fee

Effective date: 19970115