GB947953A - Improvements in voltage stabilizing circuits employing semiconducting elements - Google Patents

Improvements in voltage stabilizing circuits employing semiconducting elements

Info

Publication number
GB947953A
GB947953A GB15362A GB15362A GB947953A GB 947953 A GB947953 A GB 947953A GB 15362 A GB15362 A GB 15362A GB 15362 A GB15362 A GB 15362A GB 947953 A GB947953 A GB 947953A
Authority
GB
United Kingdom
Prior art keywords
high tension
line scan
tension supply
scan circuit
series
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
GB15362A
Inventor
Donald George Thompson
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.)
Philips Components Ltd
Original Assignee
Mullard 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 Mullard Ltd filed Critical Mullard Ltd
Priority to GB15362A priority Critical patent/GB947953A/en
Publication of GB947953A publication Critical patent/GB947953A/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)
  • Television Receiver Circuits (AREA)

Abstract

947,953. Automatic voltage control systems. MULLARD Ltd. Jan. 2, 1962; No. 153/62. Heading G3R. [Also in Division H3] In a television receiver employing transistors, the line scan output stage is protected from excessive dissipation should the drive fail, by supplying the line scan circuit from a voltage stabilizer of the series transistor type and biasing the stabilizer from a high tension supply derived from the line output stage so that a failure of the high tension cuts off the series transistor. The line scan circuit, not shown, is supplied through the emitter follower T1, which is controlled by the voltage error detector T3 and error amplifier T2. The collector load R3 of detector T3 is a high value resistor connected to the high tension supply which is derived from the output of the line scan circuit. An initial bias is obtained from capacitor C1 to enable transistor T1 to conduct before the high tension supply has built up. In a modification, Fig. 2 (not shown) a rectifier is connected in series with capacitor C1 to prevent unwanted ripple from being injected into the control circuit.
GB15362A 1962-01-02 1962-01-02 Improvements in voltage stabilizing circuits employing semiconducting elements Expired GB947953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB15362A GB947953A (en) 1962-01-02 1962-01-02 Improvements in voltage stabilizing circuits employing semiconducting elements

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB15362A GB947953A (en) 1962-01-02 1962-01-02 Improvements in voltage stabilizing circuits employing semiconducting elements

Publications (1)

Publication Number Publication Date
GB947953A true GB947953A (en) 1964-01-29

Family

ID=9699343

Family Applications (1)

Application Number Title Priority Date Filing Date
GB15362A Expired GB947953A (en) 1962-01-02 1962-01-02 Improvements in voltage stabilizing circuits employing semiconducting elements

Country Status (1)

Country Link
GB (1) GB947953A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6664976B2 (en) * 2001-04-18 2003-12-16 Digimarc Corporation Image management system and methods using digital watermarks

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6664976B2 (en) * 2001-04-18 2003-12-16 Digimarc Corporation Image management system and methods using digital watermarks

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