GB303460A - Improved method of and apparatus for rendering an alternating current differential wattmeter independent of frequency when employed as a resistance meter - Google Patents

Improved method of and apparatus for rendering an alternating current differential wattmeter independent of frequency when employed as a resistance meter

Info

Publication number
GB303460A
GB303460A GB2606327A GB2606327A GB303460A GB 303460 A GB303460 A GB 303460A GB 2606327 A GB2606327 A GB 2606327A GB 2606327 A GB2606327 A GB 2606327A GB 303460 A GB303460 A GB 303460A
Authority
GB
United Kingdom
Prior art keywords
rendering
employed
independent
frequency
alternating current
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
GB2606327A
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.)
IG Farbenindustrie AG
Original Assignee
IG Farbenindustrie AG
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 IG Farbenindustrie AG filed Critical IG Farbenindustrie AG
Priority to GB2606327A priority Critical patent/GB303460A/en
Publication of GB303460A publication Critical patent/GB303460A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R11/00—Electromechanical arrangements for measuring time integral of electric power or current, e.g. of consumption
    • G01R11/36—Induction meters, e.g. Ferraris meters

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)

Abstract

303,460. Johnson, J. Y., (I. G. Farbenindustrie Akt.-Ges.). Oct. 3, 1927. Resistances, measuring.-An alternating-current instrument for measuring resistance comresistance g may be connected two differentially wound moving coils c, d, in series with which are connected the resistances e, f to be compared. A shunt prises a field winding b and as shown. In order to obviate frequency errors the moving-coil circuit is supplied with a current which has the same frequency dependence as the effective component of the current flowing through the moving coils c, d due to transformer action from the field winding b, for example by connecting a condenser h in series with the circuit containing the two moving coils c, d in parallel.
GB2606327A 1927-10-03 1927-10-03 Improved method of and apparatus for rendering an alternating current differential wattmeter independent of frequency when employed as a resistance meter Expired GB303460A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB2606327A GB303460A (en) 1927-10-03 1927-10-03 Improved method of and apparatus for rendering an alternating current differential wattmeter independent of frequency when employed as a resistance meter

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB2606327A GB303460A (en) 1927-10-03 1927-10-03 Improved method of and apparatus for rendering an alternating current differential wattmeter independent of frequency when employed as a resistance meter

Publications (1)

Publication Number Publication Date
GB303460A true GB303460A (en) 1929-01-03

Family

ID=10237776

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2606327A Expired GB303460A (en) 1927-10-03 1927-10-03 Improved method of and apparatus for rendering an alternating current differential wattmeter independent of frequency when employed as a resistance meter

Country Status (1)

Country Link
GB (1) GB303460A (en)

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