DK236581A - COUPLING NAME WITH ELECTROMAGNETIC OR ELECTROMECHANICAL CONVERSIONS - Google Patents

COUPLING NAME WITH ELECTROMAGNETIC OR ELECTROMECHANICAL CONVERSIONS

Info

Publication number
DK236581A
DK236581A DK236581A DK236581A DK236581A DK 236581 A DK236581 A DK 236581A DK 236581 A DK236581 A DK 236581A DK 236581 A DK236581 A DK 236581A DK 236581 A DK236581 A DK 236581A
Authority
DK
Denmark
Prior art keywords
impedance
feedback
amplifier
magnitude
input
Prior art date
Application number
DK236581A
Other languages
Danish (da)
Other versions
DK156796B (en
DK156796C (en
Inventor
W Baudisch
Original Assignee
Licentia Gmbh
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 Licentia Gmbh filed Critical Licentia Gmbh
Publication of DK236581A publication Critical patent/DK236581A/en
Publication of DK156796B publication Critical patent/DK156796B/en
Application granted granted Critical
Publication of DK156796C publication Critical patent/DK156796C/en

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R3/00—Circuits for transducers, loudspeakers or microphones
    • H04R3/04—Circuits for transducers, loudspeakers or microphones for correcting frequency response
    • H04R3/08—Circuits for transducers, loudspeakers or microphones for correcting frequency response of electromagnetic transducers
    • 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
    • H03F1/38—Positive-feedback circuit arrangements without negative feedback
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/04—Frequency selective two-port networks
    • H03H11/12—Frequency selective two-port networks using amplifiers with feedback
    • H03H11/126—Frequency selective two-port networks using amplifiers with feedback using a single operational amplifier
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H11/00—Networks using active elements
    • H03H11/02—Multiple-port networks
    • H03H11/28—Impedance matching networks
    • H03H11/30—Automatic matching of source impedance to load impedance

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Power Engineering (AREA)
  • Electromagnetism (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Amplifiers (AREA)
  • Table Devices Or Equipment (AREA)
  • Diaphragms For Electromechanical Transducers (AREA)
  • Networks Using Active Elements (AREA)

Abstract

1. Circuit arrangement a) with amplifier, behind which is connected the input side impedance of a transformer corresponding to two equivalent impedances (Z1, Z2), which are connected in series each with the other and of which the second (Z2) behaves non-linearly in operation, wherein a measuring impedance is provided in series with the impedance and in a feedback circuit for the formation of a magnitude which depends on the current through the measuring impedance and which is superimposed by means of a feedback in the feedback circuit on a variable input magnitude of the circuit arrangement, characterised thereby, that the superimposition takes place regeneratively and the measuring impedance is provided in the form of an image impedance (Z3) as image of at least one component of the first equivalent impedance (Z1) in such a manner that the relationship A' = (Z1 + Z3)/A . Z3 is at least approximately fulfilled within an amplitude range and a frequency range by the first equivalent impedance (Z1), the image impedance (Z3), the transfer factor A (ratio of output magnitude (U3; i3) to input magnitude (U2; i2) of the transfer path, which is connected in front of the impedance within the feedback circuit as well as the transfer factor A' (ratio of output magnitude (U6; i6) to input magnitude (U5; i5) of the feedback (3, 3') emanating from the image impedance (Z3)), b) however subject to exclusion of a circuit arrangement with amplifier and with a primary winding, connected behind the amplifier output and having a dissipative resistance Rcu , of an output transformer and with a degenerative feedback resistance value Rn between the amplifier output and a first amplifier input as well as with a series resistance value Re between this amplifier input and the associated input terminal of the circuit arrangement which is structured in such a manner that a regenerative feedback path is provided, which emanates from the side, connected with the primary winding, of a regenerative feedback resistor R', which is arranged in series with the primary winding of the output transformer, wherein k = Rn/Re = k' . Rcu /R' are chosen with 0 < k < Infin and 0 < k' < Infin in such a manner that a voltage (Ua), at which the deleterious influence of the primary dissipative resistance Rcu on the distortion factor is reduced, arises at the primary inductance of the output transformer.
DK236581A 1980-05-31 1981-05-29 CONNECTION WITH AN AMPLIFIER AFTER WHICH IS INPUT IMPACT OF A TRANSFORMER DK156796C (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3021007A DE3021007C2 (en) 1980-05-31 1980-05-31 Circuit arrangement with amplifier and transformer
DE3021007 1980-05-31

Publications (3)

Publication Number Publication Date
DK236581A true DK236581A (en) 1981-12-01
DK156796B DK156796B (en) 1989-10-02
DK156796C DK156796C (en) 1990-02-19

Family

ID=6103853

Family Applications (1)

Application Number Title Priority Date Filing Date
DK236581A DK156796C (en) 1980-05-31 1981-05-29 CONNECTION WITH AN AMPLIFIER AFTER WHICH IS INPUT IMPACT OF A TRANSFORMER

Country Status (4)

Country Link
EP (1) EP0041472B1 (en)
AT (1) ATE10693T1 (en)
DE (2) DE3021007C2 (en)
DK (1) DK156796C (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3326494A1 (en) * 1983-07-22 1985-01-31 Burkhard Dipl.-Ing. 2000 Hamburg Dick CONTROL OF THE DIAPHRAGM MOVEMENT OF THE DYNAMIC SPEAKER BY AN IMPROVED NETWORK TO IMPLEMENT ITS INPUT IMPEDANCE
EP0157187B1 (en) * 1984-03-21 1989-05-17 WILLI STUDER AG Fabrik für elektronische Apparate Amplifier circuit
EP0221324B1 (en) * 1985-10-07 1991-05-22 Studer Revox Ag Signal transducer
DE4243344A1 (en) * 1992-12-21 1994-06-23 Werkstaette Fuer Studio Techni Circuit arrangement
CN113848421B (en) * 2021-09-15 2024-04-19 国网安徽省电力有限公司电力科学研究院 Voltage sag acquisition method and device considering transformer impedance voltage drop

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3134080A (en) * 1962-10-29 1964-05-19 Northern Electric Co Hybrid feedback amplifier
DE2235664A1 (en) * 1972-07-20 1974-01-31 Max Planck Gesellschaft CIRCUIT ARRANGEMENT FOR COMPENSATING THE VOLTAGE DROP ON A SPEAKER
CA982055A (en) * 1972-09-11 1976-01-20 Toshiyuki Goto Sound reproducing system
DE2420689C3 (en) * 1974-04-29 1984-09-20 Arndt 7500 Karlsruhe Klingelnberg Method and arrangement for improving the properties of electrodynamic transducers by means of negative motion
DE2711520C3 (en) * 1976-03-16 1979-08-02 Matsushita Electric Industrial Co., Ltd., Kadoma, Osaka (Japan) Load circuit for a signal source
SE398287B (en) * 1976-03-24 1977-12-12 Stahl Karl Erik PROCEDURE FOR IMPROVING THE BASATERING OF AN ELECTRODYNAMIC SPEAKER ELEMENT, AND ARRANGEMENT FOR PERFORMING THE PROCEDURE
DE2641581C3 (en) * 1976-09-13 1985-05-09 Siemens AG, 1000 Berlin und 8000 München Voltage measuring device for high voltages
JPS5951771B2 (en) * 1977-11-04 1984-12-15 ヤマハ株式会社 power amplifier
DE2901567C2 (en) * 1979-01-13 1982-09-09 Licentia Patent-Verwaltungs-Gmbh, 6000 Frankfurt Circuit arrangement with amplifier with output transformer

Also Published As

Publication number Publication date
DE3021007A1 (en) 1981-12-10
EP0041472A1 (en) 1981-12-09
DE3021007C2 (en) 1984-05-17
DK156796B (en) 1989-10-02
DK156796C (en) 1990-02-19
ATE10693T1 (en) 1984-12-15
EP0041472B1 (en) 1984-12-05
DE3167569D1 (en) 1985-01-17

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Legal Events

Date Code Title Description
PBP Patent lapsed