DE422196C - Circuit to avoid damage to telephones located directly or indirectly in the anode circuit of cathode lamps by extra currents when switching the lamps on and off - Google Patents

Circuit to avoid damage to telephones located directly or indirectly in the anode circuit of cathode lamps by extra currents when switching the lamps on and off

Info

Publication number
DE422196C
DE422196C DEH89194D DEH0089194D DE422196C DE 422196 C DE422196 C DE 422196C DE H89194 D DEH89194 D DE H89194D DE H0089194 D DEH0089194 D DE H0089194D DE 422196 C DE422196 C DE 422196C
Authority
DE
Germany
Prior art keywords
lamps
circuit
switching
indirectly
located directly
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
DEH89194D
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.)
Dr Erich F Huth GmbH
Original Assignee
Dr Erich F Huth GmbH
Publication date
Priority to DEH89194D priority Critical patent/DE422196C/en
Application granted granted Critical
Publication of DE422196C publication Critical patent/DE422196C/en
Expired 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
    • H03F1/52—Circuit arrangements for protecting such amplifiers
    • H03F1/54—Circuit arrangements for protecting such amplifiers with tubes only

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Circuit Arrangement For Electric Light Sources In General (AREA)

Description

Schaltung zur Vermeidung einer Beschädigung von direkt oder indirekt im Anodenkreis von käthodenlampen liegenden Telephonen durch Extraströme beim Ein- und Ausschalten der Lampen. Bei Telephonen, welche direkt oder indirekt im Anodenkreis einer Kathodenlampe liegen, entstehet beim Ein- und Ausschalten der Lampen ein Extrastrom, durch welchen die Telephonwicklung beansprucht 'und nach mehr oder minder langer Zeit zerstört wird.Circuit to avoid direct or indirect damage telephones located in the anode circuit of cathode lamps due to extra currents when entering and turn off the lamps. With telephones, which are directly or indirectly in the anode circuit a cathode lamp, an extra current is generated when the lamps are switched on and off, by which the telephone winding is claimed 'and after more or less longer Time is destroyed.

Die Erfindung bezweckt, diesen Lbelstand durch geeignete Maßnahmen zu vermeiden. Dies kann z. B. dadurch geschehen, daß vor dem Ein- bzw. Ausschalten des Anodenkreises bzw. der Telephonwicklung ein Kondensator oder ein selbstinduktionsloser Widerstand o. dgl. parallel zu dem Anodenkreis gelegt wird. Es wird so auf einfache Weise eine schädliche Beeinflussung der Telephonwicklung durch den Extrastrom beim Ein- und Ausschalten der Lampen verhindert.The invention aims at this Lbelstand by suitable measures to avoid. This can e.g. B. happen that before switching on or off of the anode circuit or the telephone winding is a capacitor or a self-inductionless one Resistance or the like is placed parallel to the anode circuit. It gets that easy Way a harmful influence on the telephone winding by the extra current at Switching the lamps on and off prevented.

Die Zeichnung zeigt die Neuerurg m einem Ausführungsbeispiel. In den Anodenkreis der Kathodenlampe i mit Anode 2, Gitter 3 und Glühlampe q. ist das Telephon 5 mit Parallelkondensator 6 geschaltet. Der Anodenkreis ist an die Batterie mit ± roo Volt und der Heizstromkreis an die Batterie mit ± 6 Volt gelegt. Der Schalter 7 dient zum Ein- und Ausschalten der Lampe und weist die Kontakte 8 und 9 für die Einschaltung des Heizstromes bzw. des Anodenstromes sowie den Leerkontakt io für die Ausschaltung dieser beiden Ströme auf. Zwischen die Batterieklemme + ioo und den Schaltkontakt 9 ist ein selbstinduktionsloser Widerstand i i gelegt, der die Beschädigung des Telephons 5 beim Ein- und Ausschalten der Lampei durch einen Extrastrom verhindert, indem er beim Schließen bzw. öffnen des Schalters 7 parallel zum Anodenkreis gelegt wird. Statt dessen kann auch ein Kondensator zum gleichen Zweck vorgesehen sein.The drawing shows the Neuerurg m one embodiment. In the Anode circuit of the cathode lamp i with anode 2, grid 3 and incandescent lamp q. is the phone 5 connected with parallel capacitor 6. The anode circuit is connected to the battery with ± roo volts and the heating circuit connected to the battery with ± 6 volts. The desk 7 is used to switch the lamp on and off and has contacts 8 and 9 for the Switching on the heating current or the anode current as well as the empty contact OK for the switching off of these two currents. Between the battery terminal + ioo and the switching contact 9 is a self-inductive resistor i i placed, which the Damage to the telephone 5 when the lamp is switched on and off by an extra current prevented by being parallel to the anode circuit when the switch 7 is closed or opened is placed. Instead, a capacitor can also be provided for the same purpose be.

Claims (1)

PATnNT-ANsPRUcH: Schaltung zur Vermeidung einer Beschädigung von direkt oder indirekt im Anodenkreis von Kathodenlampen liegenden Telephonen durch Extraströme beim Ein-und Ausschalten der Lampen, dadurch gekennzeichnet, daß vor dem Ein- bzw. Ausschalten des Anodenkreises ein Kondensator oder ein selbstinduktionsfreier Widerstand o. dgl. parallel zu diesem Kreis gelegt wird. PATnNT CLAIM: Circuit to avoid damage to telephones located directly or indirectly in the anode circuit of cathode lamps by extra currents when switching the lamps on and off, characterized in that a capacitor or a self-induction-free resistor or the like is used before the anode circuit is switched on or off. Like. Is placed parallel to this circle.
DEH89194D Circuit to avoid damage to telephones located directly or indirectly in the anode circuit of cathode lamps by extra currents when switching the lamps on and off Expired DE422196C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEH89194D DE422196C (en) Circuit to avoid damage to telephones located directly or indirectly in the anode circuit of cathode lamps by extra currents when switching the lamps on and off

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEH89194D DE422196C (en) Circuit to avoid damage to telephones located directly or indirectly in the anode circuit of cathode lamps by extra currents when switching the lamps on and off

Publications (1)

Publication Number Publication Date
DE422196C true DE422196C (en) 1925-11-30

Family

ID=7165519

Family Applications (1)

Application Number Title Priority Date Filing Date
DEH89194D Expired DE422196C (en) Circuit to avoid damage to telephones located directly or indirectly in the anode circuit of cathode lamps by extra currents when switching the lamps on and off

Country Status (1)

Country Link
DE (1) DE422196C (en)

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