DE4003301A1 - Suppression of electromagnetic interference - using chopper amplifier with integrated intermodulation suppression - Google Patents

Suppression of electromagnetic interference - using chopper amplifier with integrated intermodulation suppression

Info

Publication number
DE4003301A1
DE4003301A1 DE19904003301 DE4003301A DE4003301A1 DE 4003301 A1 DE4003301 A1 DE 4003301A1 DE 19904003301 DE19904003301 DE 19904003301 DE 4003301 A DE4003301 A DE 4003301A DE 4003301 A1 DE4003301 A1 DE 4003301A1
Authority
DE
Germany
Prior art keywords
suppression
integrated
intermodulation
electromagnetic interference
chopper amplifier
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.)
Ceased
Application number
DE19904003301
Other languages
German (de)
Inventor
Karl Dipl Ing Kraft
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.)
Krueger GmbH and Co KG
Original Assignee
Krueger GmbH and Co KG
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 Krueger GmbH and Co KG filed Critical Krueger GmbH and Co KG
Priority to DE19904003301 priority Critical patent/DE4003301A1/en
Publication of DE4003301A1 publication Critical patent/DE4003301A1/en
Ceased legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
    • H03F1/32—Modifications of amplifiers to reduce non-linear distortion
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B15/00—Suppression or limitation of noise or interference

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Power Engineering (AREA)
  • Amplifiers (AREA)

Abstract

A suppression system is used to prevent electromagnetic inference (EMI) from affecting information and communications in industrial control, partic. in relation to the safe operation of crane systems. The process uses chopper amplifiers with an in built integrated intermodulation suppression characteristic. ADVANTAGE - Improved suppression of electromagnetic interference for electronic circuits.

Description

Die Erfindung beschäftigt sich mit der Unterdrückung von EMV-Störun­ gen bei elektrischen Schaltungen, insbesondere von Informations- und Sicherheitsanlagen an Kranen sowie von Industriesteuerungen. - EMV meint dabei die sogenannte elektromagnetische Verträglichkeit.The invention is concerned with the suppression of EMC interference conditions in electrical circuits, in particular information and Safety systems on cranes and industrial controls. - EMC means the so-called electromagnetic compatibility.

Durch den zunehmenden Einsatz von elektrischen Schaltungen in funktions- und sicherheitsrelevanten Bereichen werden die Probleme um die EMV-Einflüsse, die bis zum Totalausfalll führen können, immer dringlicher. Zur weitgehenden Beseitigung von EMV-Einflüssen hat man bisher zumeist abschirmende Maßnahmen an Anlagenteilen sowie Meßleitungen durchgeführt; auch schaltungstechnische Zusatzmaßnahmen sowie besondere Auslegungen des Leiterplattenlayouts sind für diesen Zweck durchgeführt worden. Alles das ist jedoch verhältnismäßig auf­ wendig.Due to the increasing use of electrical circuits in Functional and safety-relevant areas become the problems always about the EMC influences that can lead to total failure more urgent. For the extensive elimination of EMC influences So far, mostly shielding measures on plant parts and Test leads carried out; also additional circuitry measures as well as special designs of the PCB layout are for this Purpose. However, all of this is proportionate to agile.

Der Erfindung liegt die Aufgabe zugrunde, EMV-Störungen einfacher zu beseitigen.The object of the invention is to make EMC interference easier to eliminate.

Hierzu lehrt die Erfindung die Verwendung von Chopperverstärkern in elektrischen Schaltungen, insbesondere von Informations- und Sicherheitsanlagen an Kranen sowie von Industriesteuerungen, zum Zwecke der Unterdrückung von EMV-Störungen.To this end, the invention teaches the use of chopper amplifiers in electrical circuits, especially information and Safety systems on cranes and industrial controls, for Purpose of suppressing EMC interference.

Die Erfindung geht hierbei von der überraschenden Erkenntnis aus, daß Chopperverstärker, die bisher nur zur Verringerung von Drifter­ scheinungen eingesetzt worden sind, im Gegensatz zu bipolaren, CMOS- oder FET-Operationsverstärkern oder dergleichen EMV-Einflüsse unterdrücken, und zwar offensichtlich aufgrund der in Chopperver­ stärkern integrierten Intermodulationsunterdrückung. Insoweit ist eine bevorzugte Ausführungsform der Erfindung dadurch gekennzeichnet, daß die Chopperverstärker anstatt bipolarer, CMOS- und/oder FET- Operationsverstärker bzw. mit integrierter Intermodulationsunter­ drückung eingesetzt werden.The invention is based on the surprising finding, that chopper amplifiers that were previously only used to reduce drifters phenomena have been used, in contrast to bipolar,  CMOS or FET operational amplifiers or similar EMC influences suppress, apparently due to that in Chopperver stronger integrated intermodulation suppression. To that extent is one preferred embodiment of the invention, that the chopper amplifiers instead of bipolar, CMOS and / or FET Operational amplifier or with integrated intermodulation sub pressure can be used.

Die durch die Erfindung erreichten Vorteile sind jedenfalls darin zu sehen, daß EMV-Einflüsse mit äußerst geringem Schaltungsaufwand, d. h. ohne besondere Zusatzmaßnahmen unterdrückt bzw. beseitigt werden können.The advantages achieved by the invention are in any case therein see that EMC influences with extremely little circuitry, d. H. suppressed or eliminated without special additional measures can be.

Claims (3)

1. Verwendung von Chopperverstärkern in elektrischen Schaltungen, insbesondere von Informations- und Sicherheitsanlagen an Kranen sowie von Industriesteuerungen, zum Zwecke der Unterdrückung von EMV- Störungen.1. Use of chopper amplifiers in electrical circuits, especially of information and safety systems on cranes as well of industrial controls, for the purpose of suppressing EMC Disorders. 2. Verwendung nach Anspruch 1, wobei die Chopperverstärker anstatt bipolarer, CMOS- und/oder FET-Operationsverstärker eingesetzt wer­ den.2. Use according to claim 1, wherein the chopper amplifier instead bipolar, CMOS and / or FET operational amplifiers the. 3. Verwendung nach Anspruch 1 oder 2, wobei die Chopperverstärker mit integrierter Intermodulationsunterdrückung eingesetzt werden.3. Use according to claim 1 or 2, wherein the chopper amplifier with integrated intermodulation suppression.
DE19904003301 1990-02-03 1990-02-03 Suppression of electromagnetic interference - using chopper amplifier with integrated intermodulation suppression Ceased DE4003301A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE19904003301 DE4003301A1 (en) 1990-02-03 1990-02-03 Suppression of electromagnetic interference - using chopper amplifier with integrated intermodulation suppression

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19904003301 DE4003301A1 (en) 1990-02-03 1990-02-03 Suppression of electromagnetic interference - using chopper amplifier with integrated intermodulation suppression

Publications (1)

Publication Number Publication Date
DE4003301A1 true DE4003301A1 (en) 1991-08-08

Family

ID=6399424

Family Applications (1)

Application Number Title Priority Date Filing Date
DE19904003301 Ceased DE4003301A1 (en) 1990-02-03 1990-02-03 Suppression of electromagnetic interference - using chopper amplifier with integrated intermodulation suppression

Country Status (1)

Country Link
DE (1) DE4003301A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008064262A2 (en) * 2006-11-21 2008-05-29 Qualcomm Incorporated Improved frequency changer circuits
US8059758B2 (en) 2006-02-10 2011-11-15 Qualcomm, Incorporated Conversion of multiple analog signals in an analog to digital converter

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4075572A (en) * 1977-01-06 1978-02-21 American Optical Corporation Isolation amplifier having improved fidelity

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4075572A (en) * 1977-01-06 1978-02-21 American Optical Corporation Isolation amplifier having improved fidelity

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
Datenbuch der Fa. Analog Devices, 1984, Vol.II, Isolation Amplifiers, S.4-23 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8059758B2 (en) 2006-02-10 2011-11-15 Qualcomm, Incorporated Conversion of multiple analog signals in an analog to digital converter
WO2008064262A2 (en) * 2006-11-21 2008-05-29 Qualcomm Incorporated Improved frequency changer circuits
WO2008064262A3 (en) * 2006-11-21 2008-12-18 Qualcomm Inc Improved frequency changer circuits
US8099072B2 (en) 2006-11-21 2012-01-17 Qualcomm Incorporated Frequency changer circuits

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Legal Events

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OP8 Request for examination as to paragraph 44 patent law
8131 Rejection