[go: up one dir, main page]

CH354125A - Circuit arrangement for regulating the current on lines in telecommunications, preferably telephone systems with key dialing - Google Patents

Circuit arrangement for regulating the current on lines in telecommunications, preferably telephone systems with key dialing

Info

Publication number
CH354125A
CH354125A CH354125DA CH354125A CH 354125 A CH354125 A CH 354125A CH 354125D A CH354125D A CH 354125DA CH 354125 A CH354125 A CH 354125A
Authority
CH
Switzerland
Prior art keywords
telecommunications
regulating
lines
current
circuit arrangement
Prior art date
Application number
Other languages
German (de)
Inventor
Thyen Rainer
Original Assignee
Standard Telephon & Radio Ag
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 Standard Telephon & Radio Ag filed Critical Standard Telephon & Radio Ag
Publication of CH354125A publication Critical patent/CH354125A/en

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
    • H04M1/515—Devices for calling a subscriber by generating or selecting signals other than trains of pulses of similar shape, or signals other than currents of one or more different frequencies, e.g. generation of DC signals of alternating polarity, coded pulses or impedance dialling
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/46—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC
    • G05F1/56—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices
    • G05F1/562—Regulating voltage or current  wherein the variable actually regulated by the final control device is DC using semiconductor devices in series with the load as final control devices with a threshold detection shunting the control path of the final control device
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F3/00—Non-retroactive systems for regulating electric variables by using an uncontrolled element, or an uncontrolled combination of elements, such element or such combination having self-regulating properties
    • G05F3/02—Regulating voltage or current
    • G05F3/08—Regulating voltage or current wherein the variable is DC
    • G05F3/10—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics
    • G05F3/16—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices
    • G05F3/20—Regulating voltage or current wherein the variable is DC using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B3/00—Line transmission systems
    • H04B3/02—Details
    • H04B3/44—Arrangements for feeding power to a repeater along the transmission line

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Signal Processing (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Nonlinear Science (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
CH354125D 1957-01-23 1958-01-23 Circuit arrangement for regulating the current on lines in telecommunications, preferably telephone systems with key dialing CH354125A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE354125X 1957-01-23

Publications (1)

Publication Number Publication Date
CH354125A true CH354125A (en) 1961-05-15

Family

ID=6286522

Family Applications (1)

Application Number Title Priority Date Filing Date
CH354125D CH354125A (en) 1957-01-23 1958-01-23 Circuit arrangement for regulating the current on lines in telecommunications, preferably telephone systems with key dialing

Country Status (4)

Country Link
BE (1) BE564184A (en)
CH (1) CH354125A (en)
GB (1) GB834367A (en)
NL (1) NL224197A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3624586A1 (en) * 1986-07-21 1988-01-28 Siemens Ag CONSTANT POWER SOURCE
DE10205194A1 (en) * 2002-02-08 2003-08-28 Tyco Electronics Amp Gmbh Circuit arrangement for controlling a constant current through a load

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1227988B (en) * 1962-11-24 1966-11-03 Oskar Vierling Dr Arrangement for stabilizing DC voltages
DE1297191B (en) * 1963-08-09 1969-06-12 Standard Elektrik Lorenz Ag DC voltage regulator with load current limitation
DE1234837B (en) * 1964-02-13 1967-02-23 Dr Oskar Vierling Arrangement for stabilizing DC voltages
DE1259446B (en) * 1965-02-06 1968-01-25 Saba Gmbh Circuit arrangement for limiting a load current by means of a transistorized two-terminal network

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3624586A1 (en) * 1986-07-21 1988-01-28 Siemens Ag CONSTANT POWER SOURCE
DE10205194A1 (en) * 2002-02-08 2003-08-28 Tyco Electronics Amp Gmbh Circuit arrangement for controlling a constant current through a load
US6816002B2 (en) 2002-02-08 2004-11-09 Tyco Electronics Amp Gmbh Circuit arrangement for controlling a constant current through a load

Also Published As

Publication number Publication date
BE564184A (en)
NL224197A (en)
GB834367A (en) 1960-05-04

Similar Documents

Publication Publication Date Title
CH354125A (en) Circuit arrangement for regulating the current on lines in telecommunications, preferably telephone systems with key dialing
CH394313A (en) Signaling method for telecommunication systems, in particular telephone systems, with touch dialing
CH387107A (en) Circuit arrangement for switching off the ringing current in the event of subscriber reporting in telephone systems
CH395196A (en) Telephone subscriber station with signaling device
CH402085A (en) Tone-frequency code touch dialing procedure with voice-protected receivers in telephone systems
CH374104A (en) Telecommunication system with relay-free subscriber line circuits
CH370129A (en) Circuit arrangement for line selectors provided with hunt groups, which are set by marking devices, in telephone systems
AU266667B2 (en) Circuit arrangement for determining party line telephone numbers
CA533784A (en) Subscribers line circuits in telecommunication systems
AU2275062A (en) Circuit arrangement for determining party line telephone numbers
AT196926B (en) Circuit arrangement for connecting subscriber lines to connecting lines in telephone systems with relay selectors
AU227689B2 (en) Improvements in arrangements for providing two-way communication at intermediate points. ona telephone circuit
AT254285B (en) Circuit arrangement for telecommunication, in particular telephone systems with direct current supply of the subscriber stations
CH366860A (en) Circuit arrangement for line selectors provided with hunt groups, which are set by marking devices, in telephone systems
DK97760C (en) Loudspeaker telephone system with several main stations.
AU219956B2 (en) Circuit arrangement forthe identification, marking or supervision of lines in telecommunication systems in particular in telephone systems
AT202198B (en) Circuit arrangement for the identification of crosspoints in telecommunications, - in particular telephone systems.
AT216583B (en) Circuit arrangement for telephone systems with connection dialers
CH372096A (en) Circuit arrangement for power supply devices in telecommunication systems, in particular telephone systems
AU3638158A (en) Improvements in arrangements for providing two-way communication at intermediate points. ona telephone circuit
CA592002A (en) Party line lock-out circuit
DK106232C (en) Telecommunication systems, in particular house telephone systems.
BE588949A (en) Common telephone line.
CA605038A (en) Party line electrical communication systems
CH379585A (en) Circuit arrangement for telecommunications, in particular telephone systems with frequency selection