DK9300498U3 - Attenuator preferably for audio signals - Google Patents

Attenuator preferably for audio signals Download PDF

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Publication number
DK9300498U3
DK9300498U3 DK9300498U DK9300498U DK9300498U3 DK 9300498 U3 DK9300498 U3 DK 9300498U3 DK 9300498 U DK9300498 U DK 9300498U DK 9300498 U DK9300498 U DK 9300498U DK 9300498 U3 DK9300498 U3 DK 9300498U3
Authority
DK
Denmark
Prior art keywords
electrical
resistors
attenuator
audio signals
terminals
Prior art date
Application number
DK9300498U
Other languages
Danish (da)
Inventor
Larsen Niels Henrik Strauss
Original Assignee
N L Elektronik V Niels Larsen
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 N L Elektronik V Niels Larsen filed Critical N L Elektronik V Niels Larsen
Priority to DK9300498U priority Critical patent/DK9300498U3/en
Application granted granted Critical
Publication of DK9300498U3 publication Critical patent/DK9300498U3/en
Priority to PCT/DK1994/000416 priority patent/WO1995014301A1/en
Priority to AU80583/94A priority patent/AU8058394A/en
Priority to EP94931527A priority patent/EP0733261A1/en

Links

Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K1/00—Printed circuits
    • H05K1/02—Details
    • H05K1/0213—Electrical arrangements not otherwise provided for
    • H05K1/0237—High frequency adaptations
    • H05K1/0246—Termination of transmission lines
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/24—Frequency- independent attenuators
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10022—Non-printed resistor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10053—Switch
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10007—Types of components
    • H05K2201/10196—Variable component, e.g. variable resistor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K2201/00—Indexing scheme relating to printed circuits covered by H05K1/00
    • H05K2201/10—Details of components or other objects attached to or integrated in a printed circuit board
    • H05K2201/10613—Details of electrical connections of non-printed components, e.g. special leads
    • H05K2201/10621—Components characterised by their electrical contacts
    • H05K2201/10636—Leadless chip, e.g. chip capacitor or resistor
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05K—PRINTED CIRCUITS; CASINGS OR CONSTRUCTIONAL DETAILS OF ELECTRIC APPARATUS; MANUFACTURE OF ASSEMBLAGES OF ELECTRICAL COMPONENTS
    • H05K3/00—Apparatus or processes for manufacturing printed circuits
    • H05K3/30—Assembling printed circuits with electric components, e.g. with resistor
    • H05K3/32—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits
    • H05K3/34—Assembling printed circuits with electric components, e.g. with resistor electrically connecting electric components or wires to printed circuits by soldering
    • H05K3/341—Surface mounted components
    • H05K3/3415—Surface mounted components on both sides of the substrate or combined with lead-in-hole components
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Attenuators (AREA)
  • Adjustable Resistors (AREA)

Description

- i - DK 93 00498 U3- i - DK 93 00498 U3

BeskrivelseDescription

BenævnelseDenominations

Attenuator fortrinsvis til audiosignaler.Attenuator preferably for audio signals.

Frembringe!sens anvendelsesområdeGenerate the scope of application

Denne frembringelse angår en trinvis justerbar attenuator til brug for volumenkontrol af audiosignaler i forstærkeranlæg og generelt til attenuering af elektriske signaler i andre typer af elektriske apparater.This provision relates to a step-adjustable attenuator for use in volume control of audio signals in amplifier systems and generally for attenuation of electrical signals in other types of electrical apparatus.

Attenuatoren er forsynet med en mekanisk fastspændelse ved en møtrik, som spændes fast i en apparatplade eller lignende. De elektriske forbindelser etableres ved lodning med tin eller forbindes med et stik. Attenuatoren er af den trinvis justerbare type opbygget med en drejeomskifter med endestop. Den elektriske funktion består af to identiske kredsløb, som altid sporer og korresponderer til samme indstilling, for at opfylde kravet til ens behandling af de to kanaler i stereo-signaler.The attenuator is provided with a mechanical clamp on a nut which is clamped in an appliance plate or the like. The electrical connections are established by soldering with tin or connected with a plug. The attenuator is of the incrementally adjustable type with a rotary switch with end stop. The electrical function consists of two identical circuits, which always track and correspond to the same setting, to meet the requirement for equal treatment of the two channels in stereo signals.

Attenuatoren er endvidere opbygget med to printkort, hvorpå de nødvendige elektriske modstande er monteret med en sådan modstandsværdi og i en sådan rækkefølge, at attenueringen forløber jævnt og ofte ækvidistant med hensyn til lydtrykket målt i enheden decibel.The attenuator is further constructed with two printed circuit boards, on which the necessary electrical resistors are mounted with such resistance value and in such order that the attenuation proceeds smoothly and often equidistantly with respect to the sound pressure measured in the unit decibels.

Kendt teknikPrior art

Attenuatorer udført som trinvis justerbare typer med en drejeomskifter påmonteret to ens sektioner bestående af et omskifterdæk med et printkort, hvorpå elektriske modstande fastholdes, har længe været kendt. (Se figur nr. 1).Attenuators designed as incrementally adjustable types with a pivot switch mounted on two identical sections consisting of a switch deck with a circuit board holding electrical resistors have long been known. (See Figure # 1).

Det tekniske problem, der skal løsesThe technical problem to be solved

De kendte attenuatorer er relativt pladskrævende og har i elektrisk henseende en række ufordelagtige egenskaber. Herunder, at den samlede lederbanelængde med printkortledere og modstandselementer er lang. F.eks. 1 meter. At den heraf følgende serieselvinduktion og spredningskapacitet er uønskede for funktionen. At elektriske felter fra støjkilder forholdsvis let indstråles i det elektriske kredsløb som følge af åbne arealer, hvori feltlinierne inducerer strømme. At elektriske felter fra signalkilderne forholdsvis let udstråles fra det elektriske kredsløb som - 2 - DK 93 00498 U3 følge af åbne arealer og den samlede lange lederbanelængde. Det bevirker tilsammen, at båndbredden for de elektriske signalfrekvenser reduceres. Hertil kommer,· at konvensionelle elektriske modstande udført med aksiale tilledninger oftest består af et modstandslegeme termineret med metalkapper på mekanisk vis, således at forskellige materialer principielt altid danner usikre overgange, som fremkalder ulineære elektriske modstande. Den deraf følgende forvrængning er af betydning for egnetheden til meget lave signalfrekvensniveauer samt til audiosignaler, som skal danne reference i udvikling og forskning i Hi-Fi.The known attenuators are relatively space consuming and have a number of disadvantageous properties in electrical terms. Including that the total conductor path length with PCB conductors and resistor elements is long. Eg. 1 meter. That the resulting series self-evacuation and scattering capacity are undesirable for the function. That electric fields from noise sources are relatively easily irradiated in the electrical circuit due to open areas in which the field lines induce currents. That electric fields from the signal sources are relatively easily emitted from the electrical circuit as - 2 - DK 93 00498 U3 due to open areas and the overall long conductor path length. Together, this reduces the bandwidth of the electrical signal frequencies. In addition, conventional electrical resistors made with axial leads usually consist of a resistance body terminated with metal sheaths in a mechanical manner, so that different materials always form unsafe transitions which produce nonlinear electrical resistances. The resulting distortion is of importance for the suitability for very low signal frequency levels as well as for audio signals, which should be the reference in the development and research of Hi-Fi.

Med frembringelsen ønskes tilvejebragt en forbedret type af de kendte attenuatorer med drejeomskiftere og påmonterede sektioner af printkort med elektriske modstande. Den nye attenuator skal have en kortere signalvejslængde og udføres med minimal serieselvinduktion, spredningskapacitet og forvrængning. Heraf vil følge, at ind- og udstrålingsforholdene ændres fordelagtigt.With the invention, it is desired to provide an improved type of the known attenuators with rotary switches and mounted sections of printed circuit boards with electrical resistors. The new attenuator must have a shorter signal path length and be performed with minimal serial self-evacuation, scattering capacity and distortion. As a result, the radiation and radiation conditions will change advantageously.

Den nye teknikThe new technique

Det nye ved frembringelsen udgøres af, at attenuatorens elektriske modstande er så små, at de kan monteres med den kortest tilladte lederbaneforbindelse til omskifterdækkets terminaler, samt at de elektriske modstande er af typen SMD-modstande, som har meget lav serieselvinduktion, meget lav spredningskapacitet og er termineret ved hjælp af en kemisk proces.What is new in the production is that the attenuator's electrical resistances are so small that they can be mounted with the shortest permissible conductor connection to the switch deck terminals, and that the electrical resistors are of the type SMD resistors, which have very low serieselduction, very low scattering capacity and is terminated by a chemical process.

Den tekniske virkningThe technical impact

Ved at anvende den ovenfor nævnte teknik i forbindelse med den kendte teknik, forøges båndbredden for de elektriske signalfrekvenser. Serieselvinduktion og spredningskapacitet formindskes tillige med forvrængningen af signalerne. Ind- og udstrålingsforholdene ændres fordelagtigt og den kompakte udformning gør montage lettere. Det sidstnævnte har betydning for opgradering af eksisterende apparater.By using the above-mentioned technique in conjunction with the prior art, the bandwidth of the electrical signal frequencies is increased. Series elongation and scattering capacity are also reduced along with the distortion of the signals. Advantageously, the radiation and radiation conditions change and the compact design makes mounting easier. The latter is important for upgrading existing appliances.

Frembringelsen og specielt fordelagtige udførelsesformer forklares i enkeltheder i det følgende under henvisning til figurerne på tegningen.The invention and particularly advantageous embodiments are explained in detail below with reference to the figures in the drawing.

Claims (2)

1. Attenuator til elektriske signaler, især audiosignaler, bestående af en drejeomskifter (3) påmonteret elektriske modstande (1) med ledende forbindelse til omskifterdækket s terminaler (2), som er nyt ved at de elektriske modstande udgøres DK 93 00498 U3 - 4 - af overflademonterede modstande (SMD-modstande) (l), som er monteret helt tæt ved omskifterdækkets terminaler (2).1. Attenuator for electrical signals, in particular audio signals, consisting of a rotary switch (3) mounted on electrical resistors (1) with conductive connection to the switch deck's terminals (2), which is new in that the electrical resistors constitute DK 93 00498 U3 - 4 - of surface mounted resistors (SMD resistors) (1), which are mounted very close to the switch deck terminals (2). 2. Attenuator til elektriske signaler ifølge krav 1, som er nyt ved at de elektriske modstande (1) er monteret på begge sider af omskifterdækket s terminaler (2) i vandret plan.An electrical signal attenuator according to claim 1, which is new in that the electrical resistors (1) are mounted on both sides of the switch deck's terminals (2) in a horizontal plane.
DK9300498U 1993-11-11 1993-11-11 Attenuator preferably for audio signals DK9300498U3 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
DK9300498U DK9300498U3 (en) 1993-11-11 1993-11-11 Attenuator preferably for audio signals
PCT/DK1994/000416 WO1995014301A1 (en) 1993-11-11 1994-11-04 Attenuator especially for audio-signals
AU80583/94A AU8058394A (en) 1993-11-11 1994-11-04 Attenuator especially for audio-signals
EP94931527A EP0733261A1 (en) 1993-11-11 1994-11-04 Attenuator especially for audio-signals

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DK9300498U DK9300498U3 (en) 1993-11-11 1993-11-11 Attenuator preferably for audio signals

Publications (1)

Publication Number Publication Date
DK9300498U3 true DK9300498U3 (en) 1993-12-24

Family

ID=8154497

Family Applications (1)

Application Number Title Priority Date Filing Date
DK9300498U DK9300498U3 (en) 1993-11-11 1993-11-11 Attenuator preferably for audio signals

Country Status (3)

Country Link
EP (1) EP0733261A1 (en)
DK (1) DK9300498U3 (en)
WO (1) WO1995014301A1 (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ES2641583T3 (en) 2007-04-16 2017-11-10 Marquardt Gmbh Procedure for the manufacture of an electromechanical switch
CN101640103B (en) * 2008-07-28 2012-05-23 阎跃军 Adjusting system of electronic parameters and device
TW201039555A (en) * 2009-04-16 2010-11-01 Yue-Jun Yan Adjustment device of electrical parameters
DE102009017689A1 (en) * 2009-04-16 2010-10-21 Asc-Tec Ag Antennen-Satelliten-Communication-Technik level control
CN102938288B (en) * 2011-08-15 2017-02-15 深圳市研通高频技术有限公司 Electrical parameter adjusting device

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3622919A (en) * 1969-06-03 1971-11-23 Tektronix Inc Step attenuator of low inductance and high bandwidth
DE2650018C2 (en) * 1976-01-28 1983-12-08 Alps Electric Co., Ltd., Tokyo Electric attenuator for sound reproduction systems
US4035758A (en) * 1976-03-15 1977-07-12 P. R. Mallory & Co., Inc. Adjustable variable resistance control system

Also Published As

Publication number Publication date
WO1995014301A1 (en) 1995-05-26
EP0733261A1 (en) 1996-09-25

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