ES417510A1 - Operating circuit of a telephone set - Google Patents

Operating circuit of a telephone set

Info

Publication number
ES417510A1
ES417510A1 ES417510A ES417510A ES417510A1 ES 417510 A1 ES417510 A1 ES 417510A1 ES 417510 A ES417510 A ES 417510A ES 417510 A ES417510 A ES 417510A ES 417510 A1 ES417510 A1 ES 417510A1
Authority
ES
Spain
Prior art keywords
contact
commutator
circuit
normally open
disk
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
ES417510A
Other languages
Spanish (es)
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.)
TDK Micronas GmbH
ITT Inc
Original Assignee
Deutsche ITT Industries GmbH
ITT Industries Inc
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 Deutsche ITT Industries GmbH, ITT Industries Inc filed Critical Deutsche ITT Industries GmbH
Publication of ES417510A1 publication Critical patent/ES417510A1/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/26—Devices for calling a subscriber
    • H04M1/30—Devices which can set up and transmit only one digit at a time
    • H04M1/31—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses
    • H04M1/312—Devices which can set up and transmit only one digit at a time by interrupting current to generate trains of pulses; by periodically opening and closing contacts to generate trains of pulses pulses produced by electronic circuits

Landscapes

  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Devices For Supply Of Signal Current (AREA)
  • Interface Circuits In Exchanges (AREA)

Abstract

Improvements in the handling circuits of the subscriber apparatuses constituted by a circuit within which a fully electronic control circuit produces, according to the digits entered through a dial pad, the train of dial pulses such as pulses electrical contact of the impulse contact of the disk commutator and like those of the normally open contact of the commutator of the same, characterized in that the input line coming directly from the control unit (a, b) is connected, through the normally open contact of the commutator (HU) from the mobile support to a bridge rectifier (GL), because from the positive output of this to the negative terminal of it is the well-known conversation circuit (SK) made up of the hybrid transformer (GU), the microphone (M), the receiver (F) and the balancing network (LN), a first electronic switch that replaces the impulse contact of the disk switch and a connection Parallel connection composed of a capacitor (c) and a limiting diode (Z1) arranged in series, because in parallel with the conversation circuit there is a second electronic switch that replaces the normally open contact of the disk switch and because as supply voltage (UB) of the control circuit (S) the capacitor voltage is used. (Machine-translation by Google Translate, not legally binding)
ES417510A 1972-08-03 1973-08-02 Operating circuit of a telephone set Expired ES417510A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722238225 DE2238225A1 (en) 1972-08-03 1972-08-03 OPERATING WIRING OF A TELEPHONE SET

Publications (1)

Publication Number Publication Date
ES417510A1 true ES417510A1 (en) 1976-03-01

Family

ID=5852576

Family Applications (1)

Application Number Title Priority Date Filing Date
ES417510A Expired ES417510A1 (en) 1972-08-03 1973-08-02 Operating circuit of a telephone set

Country Status (4)

Country Link
DE (1) DE2238225A1 (en)
ES (1) ES417510A1 (en)
FR (1) FR2195130B1 (en)
GB (1) GB1398860A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2291656A1 (en) * 1974-11-14 1976-06-11 Telic Telephone numbered keyboard - replaces usual dial and can be installed without other equipment or additional supply
IT1110111B (en) * 1979-01-12 1985-12-23 Acet Srl TWO-WIRE ELECTRIC DOOR ENTRY SYSTEM, SUSCEPTABLE TO USE A PRESSISTING DOOR BELL SYSTEM, WITHOUT THE NEED FOR ADDITIONAL POWER LINES
DE3408146A1 (en) * 1984-03-06 1985-09-12 Hagenuk GmbH, 2300 Kiel Circuit arrangement for a telephone subscriber station

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2849539A (en) * 1956-12-13 1958-08-26 Bell Telephone Labor Inc Magnetic core circuits
DE1145233B (en) * 1960-10-04 1963-03-14 Arnstadt Fernmeldewerk Power surge transmitters, especially number switches for telephones
DE1229154B (en) * 1965-04-30 1966-11-24 Maack Elmewe Circuit arrangement for charge counters in telephone subscriber stations
US3488450A (en) * 1966-12-02 1970-01-06 American Telephone & Telegraph Sender for transmitting trains of pulses
CH491562A (en) * 1969-10-14 1970-05-31 Autophon Ag Circuit arrangement for telephone subscriber stations with a device for emitting audio frequency dialing signals
DE2043611A1 (en) * 1970-09-03 1972-03-09 Tn Charging circuit for capacitors at the end of a line carrying only low power in telecommunications systems
BE788732A (en) * 1971-09-13 1973-03-13 Int Standard Electric Corp KEYPAD TELEPHONE STATION
CH537679A (en) * 1971-10-29 1973-05-31 Sodeco Compteurs De Geneve Device for feeding additional devices in telephone stations

Also Published As

Publication number Publication date
FR2195130B1 (en) 1976-11-12
DE2238225A1 (en) 1974-02-14
FR2195130A1 (en) 1974-03-01
GB1398860A (en) 1975-06-26

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