GB878990A - Transistor regulator circuits - Google Patents

Transistor regulator circuits

Info

Publication number
GB878990A
GB878990A GB25675/58A GB2567558A GB878990A GB 878990 A GB878990 A GB 878990A GB 25675/58 A GB25675/58 A GB 25675/58A GB 2567558 A GB2567558 A GB 2567558A GB 878990 A GB878990 A GB 878990A
Authority
GB
United Kingdom
Prior art keywords
transistor
current
voltage
bridge
load
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
GB25675/58A
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Publication of GB878990A publication Critical patent/GB878990A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G05F1/565—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor
    • G05F1/569—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection
    • G05F1/573—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 sensing a condition of the system or its load in addition to means responsive to deviations in the output of the system, e.g. current, voltage, power factor for protection with overcurrent detector

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)

Abstract

878,990. Automatic voltage control systems. INTERNATIONAL BUSINESS MACHINES CORPORATION. Aug. 11, 1958 [Aug. 13, 1957], No. 25675/58. Class 38 (4). In a direct-current regulator circuit, the base current of a transistor connected between a source and a load is controlled by an error detection circuit, and a control arrangement is responsive to an over-current through an impedance to limit the dissipation of the transistor. As shown, a direct-current supply is derived through a constant-voltage ferroresonant transformer 10. a rectifier 12 and smoothing filter 13, and the voltage across a load 16 is maintained constant by a series regulator 15 comprising a transistor TR1. Variation in the load voltage unbalance a bridge comprising Zener diodes Z 1 , Z 2 and resistors P, R, R1, R2. The out-of-balance voltage of the bridge is sensed by an error detector 17, comprising transistors TR2, TR3, and through a cascade transistor amplifier TR4, TR5 controls the base current of the transistor TR1. Over-current flowing through a resistor R s applies a bias to the base of the transistor TR1 through a resistor Ra so as to limit the dissipation of the transistor. The collectors of transistors TR2, TR3 are maintained at substantially equal voltages by the currents through resistors R3, R4 so as to compensate for temperature effects. The bridge is adjusted by the potentiometer P.
GB25675/58A 1957-08-13 1958-08-11 Transistor regulator circuits Expired GB878990A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US677911A US3025451A (en) 1957-08-13 1957-08-13 Transistor voltage regulator

Publications (1)

Publication Number Publication Date
GB878990A true GB878990A (en) 1961-10-04

Family

ID=24720594

Family Applications (1)

Application Number Title Priority Date Filing Date
GB25675/58A Expired GB878990A (en) 1957-08-13 1958-08-11 Transistor regulator circuits

Country Status (2)

Country Link
US (1) US3025451A (en)
GB (1) GB878990A (en)

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3257596A (en) * 1962-11-28 1966-06-21 Servo Tek Products Co Inc Temperature-compensated transistor amplifier and self-saturating magnetic amplifier and motor speed control systems utilizing same
US3303412A (en) * 1964-01-30 1967-02-07 Forbro Design Corp Current regulated power supply with compensating means for extraneous shunting current paths across the load
US3461376A (en) * 1966-02-14 1969-08-12 Wanlass Electric Co Ac solid state voltage regulator
US3714549A (en) * 1972-04-20 1973-01-30 Design Elements Inc Temperature compensation circuit for a regulated power supply
DE3341345C2 (en) * 1983-11-15 1987-01-02 SGS-ATES Deutschland Halbleiter-Bauelemente GmbH, 8018 Grafing Longitudinal voltage regulator

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2811590A (en) * 1953-03-02 1957-10-29 Motorola Inc Series-energized cascade transistor amplifier
US2751549A (en) * 1954-01-04 1956-06-19 Bell Telephone Labor Inc Current supply apparatus
BE546686A (en) * 1955-04-05

Also Published As

Publication number Publication date
US3025451A (en) 1962-03-13

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