GB1068096A - Transistor circuit arrangement - Google Patents

Transistor circuit arrangement

Info

Publication number
GB1068096A
GB1068096A GB47625/64A GB4762564A GB1068096A GB 1068096 A GB1068096 A GB 1068096A GB 47625/64 A GB47625/64 A GB 47625/64A GB 4762564 A GB4762564 A GB 4762564A GB 1068096 A GB1068096 A GB 1068096A
Authority
GB
United Kingdom
Prior art keywords
transistor
circuit
voltage
circuit arrangement
nov
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
GB47625/64A
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.)
Robert Bosch Fernsehanlagen GmbH
Original Assignee
Fernseh GmbH
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 Fernseh GmbH filed Critical Fernseh GmbH
Publication of GB1068096A publication Critical patent/GB1068096A/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
    • G05F1/59—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 including plural semiconductor devices as final control devices for a single load
    • G05F1/595—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 including plural semiconductor devices as final control devices for a single load semiconductor devices connected in series
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H7/00—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions
    • H02H7/20—Emergency protective circuit arrangements specially adapted for specific types of electric machines or apparatus or for sectionalised protection of cable or line systems, and effecting automatic switching in the event of an undesired change from normal working conditions for electronic equipment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N23/00—Cameras or camera modules comprising electronic image sensors; Control thereof
    • H04N23/40—Circuit details for pick-up tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Emergency Protection Circuit Devices (AREA)
  • Dc-Dc Converters (AREA)

Abstract

1,068,096. Protecting transistors. FERNSEH G.m.b.H. Nov. 23, 1964 [Nov. 23, 1963], No. 47625/64. Heading H3T. [Also in Division G3] The focusing coil 12 of a television camera is supplied with constant current from a source 14 over a conventional regulating circuit 16 including a transistor 27 which is protected against possible overvoltage by a circuit comprising a series transistor 6 associated with resistors R 1 and R 2 . The arrangement is such that the resistance of transistor 6 increases with increase in the voltage applied to the series combination 6, 27; thus the voltage at point 10 in the circuit is prevented from rising to a value such as to damage transistor 27, since the resistance of transistor 6 increases with any increase in applied voltage at point 9 in the circuit.
GB47625/64A 1963-11-23 1964-11-23 Transistor circuit arrangement Expired GB1068096A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF41338A DE1291019B (en) 1963-11-23 1963-11-23 Transistor protection circuit

Publications (1)

Publication Number Publication Date
GB1068096A true GB1068096A (en) 1967-05-10

Family

ID=7098627

Family Applications (1)

Application Number Title Priority Date Filing Date
GB47625/64A Expired GB1068096A (en) 1963-11-23 1964-11-23 Transistor circuit arrangement

Country Status (2)

Country Link
DE (1) DE1291019B (en)
GB (1) GB1068096A (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2339906A1 (en) * 1976-01-28 1977-08-26 Cit Alcatel Current regulator protection against short circuit load conditions - uses auxiliary load comprising transistor collector emitter impedance
DE3419010A1 (en) * 1983-05-26 1984-11-29 Honeywell Inc., Minneapolis, Minn. Integrated voltage regulating circuit

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1084820B (en) * 1959-07-14 1960-07-07 Licentia Gmbh Short-circuit protection circuit for transistor power supplies

Also Published As

Publication number Publication date
DE1291019B (en) 1969-03-20

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