GB834367A - Circuit arrangement for current-regulation with the aid of transistors - Google Patents

Circuit arrangement for current-regulation with the aid of transistors

Info

Publication number
GB834367A
GB834367A GB2130/58A GB213058A GB834367A GB 834367 A GB834367 A GB 834367A GB 2130/58 A GB2130/58 A GB 2130/58A GB 213058 A GB213058 A GB 213058A GB 834367 A GB834367 A GB 834367A
Authority
GB
United Kingdom
Prior art keywords
current
transistors
aid
regulation
circuit arrangement
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
GB2130/58A
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.)
STC PLC
Original Assignee
Standard Telephone and Cables PLC
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 Telephone and Cables PLC filed Critical Standard Telephone and Cables PLC
Publication of GB834367A publication Critical patent/GB834367A/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
    • 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

Abstract

834,367. Automatic current control systems. STANDARD TELEPHONES & CABLES Ltd. Jan. 22, 1958 [Jan. 23, 1957], No. 2130/58. Class 38 (4). The current to a load RX from a D.C. supply is stabilized by a series transistor Tr1. The base current of the transistor, flowing through a resistor R1, being controlled by a second transistor Tr2 amplifying a fraction of the variation in the voltage across a resistor R2 from a tapping on a potentiometer R3. In a modification, the emitter of Tr2 is connected to the positive supply terminal.
GB2130/58A 1957-01-23 1958-01-22 Circuit arrangement for current-regulation with the aid of transistors Expired GB834367A (en)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number Publication Date
GB834367A true GB834367A (en) 1960-05-04

Family

ID=6286522

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2130/58A Expired GB834367A (en) 1957-01-23 1958-01-22 Circuit arrangement for current-regulation with the aid of transistors

Country Status (4)

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

Cited By (5)

* 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
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
DE1297191B (en) * 1963-08-09 1969-06-12 Standard Elektrik Lorenz Ag DC voltage regulator with load current limitation
EP1336911A1 (en) * 2002-02-08 2003-08-20 Tyco Electronics AMP GmbH Circuit arrangement for controlling a constant current through a load

Families Citing this family (1)

* 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 current source

Cited By (6)

* 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
EP1336911A1 (en) * 2002-02-08 2003-08-20 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
CH354125A (en) 1961-05-15
BE564184A (en)
NL224197A (en)

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