GB1004226A - Very high resistance measuring device - Google Patents

Very high resistance measuring device

Info

Publication number
GB1004226A
GB1004226A GB4265763A GB4265763A GB1004226A GB 1004226 A GB1004226 A GB 1004226A GB 4265763 A GB4265763 A GB 4265763A GB 4265763 A GB4265763 A GB 4265763A GB 1004226 A GB1004226 A GB 1004226A
Authority
GB
United Kingdom
Prior art keywords
voltage
source
amplifier
capacitor
integrating
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
GB4265763A
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.)
Tesla AS
Original Assignee
Tesla AS
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 Tesla AS filed Critical Tesla AS
Publication of GB1004226A publication Critical patent/GB1004226A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
    • G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
    • G01R27/025—Measuring very high resistances, e.g. isolation resistances, i.e. megohm-meters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measurement Of Resistance Or Impedance (AREA)

Abstract

1,004,226. Measuring resistance. TESLA NARODNI PODNIK. Oct. 29,1963 [Nov. 5, 1962; Sept.17, 1963], No. 42657/63. Heading G1U. An arrangement for measuring a very high resistance R1 includes a voltage source 1 which establishes a current flowing through R1, this current being balanced by an opposite polarity current derived from a source of steadily increasing voltage through a capacitor C1. This source of steadily increasing voltage consists of an integrating amplifier 4 having an integrating resistor R2 and an integrating capacitor C2, supplied from a D.C. voltage source 2. This voltage is adjusted until a steady null condition is derived, as shown on the indicator 3A supplied from the difference amplifier 3, at which condition the relation is satisfied. The output from the difference amplifier 3 may be used to alter the voltage of the source 2 automatically (Fig. 3 not shown) and an amplifier may be included between the D.C. amplifier 4 and the capacitor C1 (Fig. 4 not shown). Such an arrangement minimises the effect of the leakage resistance of the capacitor C1.
GB4265763A 1962-11-05 1963-10-29 Very high resistance measuring device Expired GB1004226A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CS623162 1962-11-05
CS512363 1963-09-17

Publications (1)

Publication Number Publication Date
GB1004226A true GB1004226A (en) 1965-09-15

Family

ID=25746113

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4265763A Expired GB1004226A (en) 1962-11-05 1963-10-29 Very high resistance measuring device

Country Status (2)

Country Link
CH (1) CH410174A (en)
GB (1) GB1004226A (en)

Also Published As

Publication number Publication date
CH410174A (en) 1966-03-31

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