GB1197912A - Improvements in or relating to Regulated d.c. Power Supplies - Google Patents

Improvements in or relating to Regulated d.c. Power Supplies

Info

Publication number
GB1197912A
GB1197912A GB3282667A GB3282667A GB1197912A GB 1197912 A GB1197912 A GB 1197912A GB 3282667 A GB3282667 A GB 3282667A GB 3282667 A GB3282667 A GB 3282667A GB 1197912 A GB1197912 A GB 1197912A
Authority
GB
United Kingdom
Prior art keywords
voltage
diode
output
breakdown
transistor
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
GB3282667A
Inventor
William George Peter Jenner
Adrian Francis Flynn
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.)
Hawker Siddeley Dynamics Ltd
Original Assignee
Hawker Siddeley Dynamics Ltd
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 Hawker Siddeley Dynamics Ltd filed Critical Hawker Siddeley Dynamics Ltd
Priority to GB3282667A priority Critical patent/GB1197912A/en
Publication of GB1197912A publication Critical patent/GB1197912A/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)
  • Amplifiers (AREA)

Abstract

1,197,912. Automatic voltage control. HAWKER SIDDELEY DYNAMICS Ltd. July 17, 1967, No.32826/67. Heading G3R. A direct voltage stabilizer comprises a series transistor 1 connected with its collector on the output side and having a base drive from an amplifier 2 responsive to output voltage variations, as detected by a circuit including a voltage divider 3 and a reference Zener diode 4, there being connected in a parallel channel across the collector emitter path of the transistor 1 a voltage breakdown device 6, e.g. a Zener diode. The diode 6 will conduct only when the difference between input and output voltages exceeds its breakdown voltage; this condition obtains when the circuit is first switched on, thus enabling the amplifier 2 initially to apply bias to transistor 1, whereby the output voltage is established; there-after the said difference will be less than the breakdown voltage of the diode 6 which will then be non- conductive. A current limiting resistor 7 may be provided, and as shown in Fig.4, the diode 6 may be connected to the junction between a resistor 9 and a Zener diode 8 connected across the input terminals, the arrangement then being such as to ensure that the voltage applied to the diode 6 during normal operation is less than the sum of the output voltage and the breakdown voltage of the diode 6 so that the diode 6 will not conduct even if the input voltage should rise to a level greater than the said sum.
GB3282667A 1967-07-17 1967-07-17 Improvements in or relating to Regulated d.c. Power Supplies Expired GB1197912A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3282667A GB1197912A (en) 1967-07-17 1967-07-17 Improvements in or relating to Regulated d.c. Power Supplies

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3282667A GB1197912A (en) 1967-07-17 1967-07-17 Improvements in or relating to Regulated d.c. Power Supplies

Publications (1)

Publication Number Publication Date
GB1197912A true GB1197912A (en) 1970-07-08

Family

ID=10344574

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3282667A Expired GB1197912A (en) 1967-07-17 1967-07-17 Improvements in or relating to Regulated d.c. Power Supplies

Country Status (1)

Country Link
GB (1) GB1197912A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498835A1 (en) * 1981-01-28 1982-07-30 Philips Nv CIRCUIT FOR DELAYED INPUT OF POWER SUPPLY VOLTAGE
GB2308467B (en) * 1995-12-19 1999-12-29 Contec Ltd Low cost power supply regulator

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2498835A1 (en) * 1981-01-28 1982-07-30 Philips Nv CIRCUIT FOR DELAYED INPUT OF POWER SUPPLY VOLTAGE
GB2308467B (en) * 1995-12-19 1999-12-29 Contec Ltd Low cost power supply regulator

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Legal Events

Date Code Title Description
PS Patent sealed
PLNP Patent lapsed through nonpayment of renewal fees