AT228292B

AT228292B - Electromagnetic telephone or microphone

Info

Publication number: AT228292B
Application number: AT858261A
Authority: AT
Original assignee: Philips Nv
Priority date: 1960-11-17
Filing date: 1961-11-14
Publication date: 1963-07-10

Description

  

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  Elektromagnetisches Telephon oder Mikrophon 
 EMI1.1 
 

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 betragen. 



   Liegt die Montageeinheit an ihrer richtigen Stelle im Gehäuse, wird sie durch Schrauben oder Bolzen
16 darin befestigt. Darauf wird die offene, obere Seite des Gehäuses durch eine Isolierplatte,   z. B.   aus Pertinax, verschlossen. Diese Isolierplatte weist zwei in der Zeichnung nicht dargestellte Anschlussklemmen auf, an welche die Drähte der Spule angeschlossen werden, bevor die Isolierplatte auf   dem Gehäuse   festgeleimt, gekittet oder geschraubt wird. 



   Schliesslich wird der Ankerhalter an der Membran   z. B.   durch Löten befestigt.



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  Electromagnetic telephone or microphone
 EMI1.1
 

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 be.



   If the assembly unit is in its right place in the housing, it is secured by screws or bolts
16 attached in it. Then the open, upper side of the housing is covered by an insulating plate, e.g. B. from Pertinax, closed. This insulating plate has two connection terminals, not shown in the drawing, to which the wires of the coil are connected before the insulating plate is glued, cemented or screwed onto the housing.



   Finally, the armature holder is attached to the membrane z. B. fixed by soldering.

Claims

PATENT CLAIM: Electromagnetic telephone or microphone in which an electromagnetically acting armature is mechanically connected to a membrane, characterized by a flat base body (2) made of non-magnetic material, provided with a central passage opening and serving as a housing, with a flat, step-shaped recess on one end (3) for receiving a membrane (1) and for forming an air cushion (4) behind the membrane, on the other hand has a large recess (6) on the other end, into which an assembly unit can be inserted, consisting of one between two spacers ( 10a, 10b) enclosed iron anchor plate (8), on the tongue-shaped anchor (7) a coil (9) is pushed, a hook-shaped,

on the end of the tongue-shaped armature (7), which protrudes beyond the coil (9), clamped armature holder (11), and of two pole pieces (12, 13) fastened on both sides of the armature with a yoke (14) made of permanent magnetic material.