GB877496A - Improvements in or relating to electric current stabilising circuits - Google Patents

Improvements in or relating to electric current stabilising circuits

Info

Publication number
GB877496A
GB877496A GB3345358A GB3345358A GB877496A GB 877496 A GB877496 A GB 877496A GB 3345358 A GB3345358 A GB 3345358A GB 3345358 A GB3345358 A GB 3345358A GB 877496 A GB877496 A GB 877496A
Authority
GB
United Kingdom
Prior art keywords
transistor
current
load
terminals
base
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
GB3345358A
Inventor
David George Wenham
Robert Arthur Iiilbourne
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.)
General Electric Co PLC
Original Assignee
General Electric Co 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 General Electric Co PLC filed Critical General Electric Co PLC
Priority to GB3345358A priority Critical patent/GB877496A/en
Publication of GB877496A publication Critical patent/GB877496A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • G05F3/22—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only
    • G05F3/222—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only with compensation for device parameters, e.g. Early effect, gain, manufacturing process, or external variations, e.g. temperature, loading, supply voltage
    • G05F3/225—Regulating voltage or current wherein the variable is dc using uncontrolled devices with non-linear characteristics being semiconductor devices using diode- transistor combinations wherein the transistors are of the bipolar type only with compensation for device parameters, e.g. Early effect, gain, manufacturing process, or external variations, e.g. temperature, loading, supply voltage producing a current or voltage as a predetermined function of the temperature

Landscapes

  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Networks Using Active Elements (AREA)

Abstract

877,496. Automatic current control systems; automatic regulation. GENERAL ELECTRIC CO., Ltd. Oct. 20, 1959 [Oct. 20, 1958], No. 33453/58. Class 38 (4). In an automatic current regulator the direct current through a load connected to terminals 5, 9 from a source connected to terminals 4, 8 is maintained substantially constant by controlling the base current of a PNP germanium junction transistor 1 by the potential drop across resistors 2, 3 carrying the load current. The base electrode of the transistor is connected to the junction of a Zener diode 6 and a resistor 7, connected in series across the source terminals so that the constant voltage across the Zener diode tends to bias the emitter-base layer of the transistor towards a low-impedance. Variation in load current causes a change in the potential drop across the resistors 2, 3, biasing the transistor 1 so as to tend to maintain the load current constant. The Zener diode 6 and resistor 7 may be replaced by a constant voltage source connected between terminal 4 and the base of the transistor, the load and source terminals then being interchangeable.
GB3345358A 1958-10-20 1958-10-20 Improvements in or relating to electric current stabilising circuits Expired GB877496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3345358A GB877496A (en) 1958-10-20 1958-10-20 Improvements in or relating to electric current stabilising circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3345358A GB877496A (en) 1958-10-20 1958-10-20 Improvements in or relating to electric current stabilising circuits

Publications (1)

Publication Number Publication Date
GB877496A true GB877496A (en) 1961-09-13

Family

ID=10353152

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3345358A Expired GB877496A (en) 1958-10-20 1958-10-20 Improvements in or relating to electric current stabilising circuits

Country Status (1)

Country Link
GB (1) GB877496A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1296684B (en) * 1963-08-01 1969-06-04 Loewe Opta Gmbh Transistor stabilization circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1296684B (en) * 1963-08-01 1969-06-04 Loewe Opta Gmbh Transistor stabilization circuit

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