GB906560A - - Google Patents

Info

Publication number
GB906560A
GB906560A GB906560DA GB906560A GB 906560 A GB906560 A GB 906560A GB 906560D A GB906560D A GB 906560DA GB 906560 A GB906560 A GB 906560A
Authority
GB
United Kingdom
Prior art keywords
charging
current
discharging
transistor
circuit
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
Publication date
Publication of GB906560A publication Critical patent/GB906560A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/07—Programme control other than numerical control, i.e. in sequence controllers or logic controllers where the programme is defined in the fixed connection of electrical elements, e.g. potentiometers, counters, transistors
    • G05B19/075—Programme control other than numerical control, i.e. in sequence controllers or logic controllers where the programme is defined in the fixed connection of electrical elements, e.g. potentiometers, counters, transistors for delivering a step function, a slope or a continuous function
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02P—CONTROL OR REGULATION OF ELECTRIC MOTORS, ELECTRIC GENERATORS OR DYNAMO-ELECTRIC CONVERTERS; CONTROLLING TRANSFORMERS, REACTORS OR CHOKE COILS
    • H02P7/00—Arrangements for regulating or controlling the speed or torque of electric DC motors
    • H02P7/06—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current
    • H02P7/18—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power
    • H02P7/24—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices
    • H02P7/28—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices
    • H02P7/298—Arrangements for regulating or controlling the speed or torque of electric DC motors for regulating or controlling an individual dc dynamo-electric motor by varying field or armature current by master control with auxiliary power using discharge tubes or semiconductor devices using semiconductor devices controlling armature and field supplies

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Continuous-Control Power Sources That Use Transistors (AREA)
  • Electrostatic Separation (AREA)

Abstract

906,560. Constant current systems; charging and discharging capacitors. BROOKHIRST IGRANIC Ltd. Dec. 1, 1959 [Dec. 8, 1958], No. 40760/59. Class 38 (4). A circuit for charging and discharging a capacitor C1 at constant current comprises a transistor T1 which regulates the charging current by having a substantially constant current passed between emitter and base from a source 1G1. A similar transistor circuit T2, 1G2 which acts as a short circuit in the charging direction regulates the discharging current. The arrangement may be used to control the current through a motor or other load to a constant value through another transistor T3 (Fig. 2, not shown).
GB906560D Expired GB906560A (en)

Publications (1)

Publication Number Publication Date
GB906560A true GB906560A (en) 1900-01-01

Family

ID=1753306

Family Applications (1)

Application Number Title Priority Date Filing Date
GB906560D Expired GB906560A (en)

Country Status (1)

Country Link
GB (1) GB906560A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1910669A1 (en) * 1968-03-06 1969-10-02 Westinghouse Electric Corp Circuit for limiting the rate of change of a control signal

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1910669A1 (en) * 1968-03-06 1969-10-02 Westinghouse Electric Corp Circuit for limiting the rate of change of a control signal

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