DE482040C - Resonance-free membrane - Google Patents

Resonance-free membrane

Info

Publication number
DE482040C
DE482040C DER69532D DER0069532D DE482040C DE 482040 C DE482040 C DE 482040C DE R69532 D DER69532 D DE R69532D DE R0069532 D DER0069532 D DE R0069532D DE 482040 C DE482040 C DE 482040C
Authority
DE
Germany
Prior art keywords
resonance
free membrane
metal plate
membrane according
receiver
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
DER69532D
Other languages
German (de)
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.)
Individual
Original Assignee
Individual
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.)
Publication date
Priority to DER69532D priority Critical patent/DE482040C/en
Priority claimed from GB3569/26A external-priority patent/GB258476A/en
Application granted granted Critical
Publication of DE482040C publication Critical patent/DE482040C/en
Expired legal-status Critical Current

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
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/02—Diaphragms for electromechanical transducers; Cones characterised by the construction
    • H04R7/04—Plane diaphragms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
    • H04R7/00—Diaphragms for electromechanical transducers; Cones
    • H04R7/26—Damping by means acting directly on free portion of diaphragm or cone

Landscapes

  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Physics & Mathematics (AREA)
  • Acoustics & Sound (AREA)
  • Signal Processing (AREA)
  • Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)

Description

Resonanzfreie Membran Die resonanzfreie Membran nach dem Hauptpatent kann mit -Vorteil in der Weise mit einem Empfangsgerät verbunden werden, daß die durchlöcherte Metallplatte, welche die mit Kohlekörnern bedeckte Haut trägt, als Gehäuse für den Empfänger ausgebildet ist. Auf diese Weise sind Lautsprecher und Empfänger in einfachster Form zu einem Ganzen vereinigt.Resonance-free membrane The resonance-free membrane according to the main patent can be connected to a receiving device with advantage in such a way that the perforated metal plate supporting the skin covered with grains of coal, as Housing is designed for the receiver. This is how speakers are and Receiver combined in the simplest form into a whole.

Eine Ausführungsform der Erfindung ist in Abb. i im Querschnitt dargestellt. i Abb,. z zeigt im größeren Maßstab einen Teil der Vorrichtung im Querschnitt. Abb.3 zeigt die Vorrichtung im Schaubild. Abb.4 zeigt die Schaltung der Anodenbatterie.An embodiment of the invention is shown in Fig. I in cross section. i Fig ,. z shows, on a larger scale, part of the device in cross section. Fig 3 shows the device in the diagram. Fig.4 shows the circuit of the anode battery.

Das kastenförmige Gehäuse d des Empfängers ist aus einer oder mehreren durchlochten Metallplatten gebildet, auf die sich die mit den Kohlekörnern b bedeckte Haut a legt. Um die Kohlekörner vor einer Berührung zu schützen, ist das Gehäuse mit einem Schutzgitter /t versehen.The box-shaped housing d of the receiver is formed from one or more perforated metal plates on which the skin a covered with the carbon grains b lies. In order to protect the carbon grains from being touched, the housing is provided with a protective grille / t.

Im Innern des Gehäuses sind die Verstärkerröhren i und die dazugehörigen - Schaltungselemente angeordnet.Inside the housing are the amplifier tubes i and the associated ones - Circuit elements arranged.

Zweckmäßig wird die den Verstärkerröhren und Schaltelementen zugekehrte Metallfläche d mit dem negativen Potential verbunden (Abb. 4), während die Kohlekörner b mit der Anode der Endröhre 1 verbunden sind, um damit eine gute elektrostatische Abschirmung gegen außen zu bewirken.The metal surface d facing the amplifier tubes and switching elements is expediently connected to the negative potential (Fig. 4), while the carbon grains b are connected to the anode of the end tube 1 in order to achieve good electrostatic shielding from the outside.

Bei dieser Anordnung breitet sich der Schall nach allen Seiten aus, wodurch eine gute plastische Klangwirkung erzielt wird. Durch die Wärmeausstrahlung der in dem Gehäuse angebrachten Verstärkerröhren wird die Metallfläche auf eine kleine übertemperatur gebracht, wodurch der Zwischenraum zwischen der Gummihaut a und der Metallfläche d immer trocken gehalten wird.With this arrangement the sound spreads in all directions, whereby a good three-dimensional sound effect is achieved. Through the heat radiation of the amplifier tubes mounted in the housing, the metal surface is on a brought small excess temperature, creating the space between the rubber skin a and the metal surface d is always kept dry.

Claims (3)

PATENTANSPRÜCHE: i. Resonanzfreie Membran nach Patent 452 96i, dadurch gekennzeichnet, daß die die mit Kohlekörnern (b) bedeckte Haut (a) tragende durchlöcherte Metallplatte als Gehäuse für den Empfänger ausgebildet ist. PATENT CLAIMS: i. Resonance-free membrane according to patent 452 96i, thereby characterized in that the perforated carrying the skin (a) covered with grains of coal (b) Metal plate is designed as a housing for the receiver. 2. Resonanzfreie Membran nach Anspruch i, dadurch gekennzeichnet, daß die durchlöcherte Metallplatte (d) mit dem Minuspol der Anodenbatterie verbunden ist, um den Empfänger elektrostatisch abzuschirmen. 2. Resonance-free membrane according to claim i, characterized in that the perforated metal plate (d) connected to the negative pole of the anode battery to make the receiver electrostatic shield. 3. Resonanzfreie Membran nach Anspruch i, dadurch gekennzeichnet, daß die Verstärkerröhren in der Nähe der Metallplatte (d) liegen, um diese zu erwärmen.3. Resonance-free membrane according to claim i, characterized in that that the amplifier tubes are close to the metal plate (d) in order to heat it.
DER69532D 1925-11-12 Resonance-free membrane Expired DE482040C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DER69532D DE482040C (en) 1925-11-12 Resonance-free membrane

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DER69532D DE482040C (en) 1925-11-12 Resonance-free membrane
DE1637243X 1925-11-12
GB3569/26A GB258476A (en) 1925-11-12 1926-02-08 Improvements relating to non-resonant diaphragms for telephonic, microphonic and like apparatus

Publications (1)

Publication Number Publication Date
DE482040C true DE482040C (en) 1931-04-01

Family

ID=27212228

Family Applications (1)

Application Number Title Priority Date Filing Date
DER69532D Expired DE482040C (en) 1925-11-12 Resonance-free membrane

Country Status (1)

Country Link
DE (1) DE482040C (en)

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