DE820342C - Arrangement for displaying measured values on a logarithmic scale of a measuring instrument - Google Patents

Arrangement for displaying measured values on a logarithmic scale of a measuring instrument

Info

Publication number
DE820342C
DE820342C DEP1604A DEP0001604A DE820342C DE 820342 C DE820342 C DE 820342C DE P1604 A DEP1604 A DE P1604A DE P0001604 A DEP0001604 A DE P0001604A DE 820342 C DE820342 C DE 820342C
Authority
DE
Germany
Prior art keywords
arrangement
measured values
measuring instrument
logarithmic scale
displaying measured
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
DEP1604A
Other languages
German (de)
Inventor
Kurt Dipl-Ing Hagenhaus
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens 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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Priority to DEP1604A priority Critical patent/DE820342C/en
Application granted granted Critical
Publication of DE820342C publication Critical patent/DE820342C/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R15/00—Details of measuring arrangements of the types provided for in groups G01R17/00 - G01R29/00, G01R33/00 - G01R33/26 or G01R35/00
    • G01R15/005—Circuits for altering the indicating characteristic, e.g. making it non-linear
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/24—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating logarithmic or exponential functions, e.g. hyperbolic functions

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • General Physics & Mathematics (AREA)
  • Mathematical Physics (AREA)
  • Theoretical Computer Science (AREA)
  • Nonlinear Science (AREA)
  • Software Systems (AREA)
  • Computer Hardware Design (AREA)
  • Measurement Of Current Or Voltage (AREA)

Description

Die Erfindung beschäftigt sich mit der Aufgabe, Meßwerte, welche einem Meßinstrument unter Zwischenschaltung vonRöhrenstufen zugeführt und an einer logarithmischen Skala des Instrumentes abgelesen werden sollen, von den Verstärkungseigenschaften einer hierbei verwendeten Röhrenstufe unabhängig zu machen. Diese Aufgabe wird erfindungsgemäß dadurch gelöst, daß ein Teil der am Ausgang der Röhrenstufe auftretenden Meßwertwechselspannung über amplitudenabhängige, trägheitslos arbeitende Widerstände dem Eingang der Röhrenstufe so zugeführt wird, daß die rückgeführte Spannung der ursprünglichen Spannung entgegenwirkt. The invention is concerned with the task of measuring values, which fed to a measuring instrument with the interposition of tube stages and to a logarithmic scale of the instrument should be read from the gain properties a tube stage used here to make it independent. This object is achieved according to the invention solved in that a part of the measured value alternating voltage occurring at the output of the tube stage via amplitude-dependent, inertia-free resistors to the input of the tube stage is supplied so that the returned voltage counteracts the original voltage.

Durch den erfindungsgemäßen Einsatz der an sich in ihrer Wirkung bekannten Gegenkopplung in Verbindung mit amplitudenabhängigen Widerständen, deren Anwendung zur Erzielung logarithmischer Skalen ebenfalls bekannt ist, ergibt sich vorteilhafterweise nur ein einmalig auftretender Verstärkungsverlust, während die folgezeitige Anwendung von Gegenkopplung und amplitudenabhängigen Widerständen in jedem der entsprechenden Meßkreisteile für sich einen Verstärkungsverlust mit sich bringen würde. Through the use according to the invention, the per se in their effect known negative feedback in connection with amplitude-dependent resistances, whose Application for achieving logarithmic scales is also known, results advantageously only a one-time loss of gain, while the subsequent application of negative feedback and amplitude-dependent resistances in each of the corresponding parts of the measuring circuit itself entails a gain loss would bring.

Zur Erläuterung der Erfindung ist in der Zeichnung in schematischer Weise eine Meßschaltung wiedergegeben. Dem Gitter der gezeigten Röhrenstufe R wird über einen Übertrager die zu messende Wechselspannung t? zugeführt, wobei ein Teil der im Anodenkreis der gezeigten Röhrenstufe auftretenden Meßwertwecllselspannung in Gegenschaltung über amplitudenal,hänbige Widerstände, welche hier aus gegensinnig geschalteten Gleichrichtern G1 und G2 bestehen, trägheitslos dem Gitter der gezeigten Röhre R zugeführt wird. To explain the invention is in the drawing in schematic Way reproduced a measuring circuit. The grid of the tube stage R shown is the alternating voltage t to be measured via a transformer? fed, with a part the measured value alternating voltage occurring in the anode circuit of the tube stage shown in counter-circuit via amplitude, dependent resistances, which here from opposite directions connected rectifiers G1 and G2 exist, inertia the grid of the shown Tube R is fed.

Über einen im anderen Zweig des Anodenkreises liegenden übertrager wird die Meßwertwechselspannung nach Gleichrichtung dem Meßinstrument zugeführt. Via a transformer located in the other branch of the anode circuit the measured value alternating voltage is fed to the measuring instrument after rectification.

PATENTANSPRCHE: I. Anordnung zur Anzeigte von Meßwerten auf einer logarithmischen Skala eines Meßinstrumentes, welchem diese Meßwerte unter Zwischenschaltung einer Röhrenstufe zugeführt werden, dadurch gekennzeichnet, daß ein Teil der am Ausgang der Röhrenstufe auftretenden Meßwertwechselspannung über amplitudenabhängige trägheitslos arbeitsende Widerstände dem Eingang der Röhrenstufe so zugeführt wird, daß die rückgeführte Spannung der ursprüngl ichen Spannung entgegenwirkt. PATENT CLAIMS: I. Arrangement for displaying measured values on a logarithmic scale of a measuring instrument to which these measured values are interposed are fed to a tube stage, characterized in that a part of the am Output of the tube stage occurring measured value alternating voltage via amplitude-dependent inertia-free resistors are fed to the input of the tube stage in such a way that that the returned tension counteracts the original tension.

Claims (1)

2. Anordnung zur Anzeige von Meßwerten auf einer logarithmischen Skala nach Anspruch I, dadurch gekennzeichnet, daß die Widerstände aus gegensinnig geschalteten Gleichrichtern bestehen. 2. Arrangement for displaying measured values on a logarithmic Scale according to claim I, characterized in that the resistances are made in opposite directions switched rectifiers exist.
DEP1604A 1949-01-26 1949-01-26 Arrangement for displaying measured values on a logarithmic scale of a measuring instrument Expired DE820342C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEP1604A DE820342C (en) 1949-01-26 1949-01-26 Arrangement for displaying measured values on a logarithmic scale of a measuring instrument

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEP1604A DE820342C (en) 1949-01-26 1949-01-26 Arrangement for displaying measured values on a logarithmic scale of a measuring instrument

Publications (1)

Publication Number Publication Date
DE820342C true DE820342C (en) 1951-11-08

Family

ID=7357357

Family Applications (1)

Application Number Title Priority Date Filing Date
DEP1604A Expired DE820342C (en) 1949-01-26 1949-01-26 Arrangement for displaying measured values on a logarithmic scale of a measuring instrument

Country Status (1)

Country Link
DE (1) DE820342C (en)

Similar Documents

Publication Publication Date Title
DE820342C (en) Arrangement for displaying measured values on a logarithmic scale of a measuring instrument
DE1183136B (en) Control stage for automatic gain control
DE1289872B (en) Frequency variable triangle voltage generator
DE658954C (en) Arrangement for the one-time setting of a desired current translation ratio for measuring current transformers
DE2723609A1 (en) INPUT CIRCUIT FOR A MEASURING AMPLIFIER
DE919354C (en) Circuit arrangement for reducing non-linear distortion of multi-stage grid-modulated transmitters
DE964779C (en) DC amplifier with electron tubes
DE636338C (en) Device for measuring the impedance of consumers
DE959282C (en) Phase sensitive AC magnetic amplifier
DE640804C (en) Temperature-independent measuring circuit with direct current measuring device and dry rectifier, in which the alternating current circuit and direct current circuit only partially coincide
DE1120590B (en) Device for displaying rms values of alternating voltages
DE879269C (en) Device for current, voltage and power measurement with alternating current with direct current instruments
DE745865C (en) Tube voltmeter with compensation of the anode current of the input tubes with the help of a second electron tube
DE739758C (en) Display device for a beacon receiver working according to the multi-tone method
DE819553C (en) Oscillographic device
EP0158197A2 (en) Demodulator
DE904702C (en) Arrangement for volume measurement
DE2131335C3 (en) Electrical circuit arrangement for determining the phase position of an alternating current signal
AT251699B (en) Measuring device for determining the phase position of two electrical quantities of the same frequency
DE1591857C (en) Circuit arrangement for comparing the phase of two signals
DE720386C (en) Switching arrangement for the optional reproduction of sound recordings in half-wave writing and normal single-point writing
DE873564C (en) DC amplifier with bridge circuit of the output stage operated with pentodes
DE442462C (en) Compensation circuit for radio goniometer
DE1162475B (en) Active power measuring device
DE1166929B (en) Circuit arrangement for summing currents for measuring purposes