IT950751B - POWER TRANSISTOR ELECTRONIC CIRCUIT FOR TRACTION AND LINEAR VARIATION OF SPEED AT CONSTANT TORQUE OF MANIFOLD MOTOR PAR TICULARLY FOR CINEPROJECTORS - Google Patents

POWER TRANSISTOR ELECTRONIC CIRCUIT FOR TRACTION AND LINEAR VARIATION OF SPEED AT CONSTANT TORQUE OF MANIFOLD MOTOR PAR TICULARLY FOR CINEPROJECTORS

Info

Publication number
IT950751B
IT950751B IT2237672A IT2237672A IT950751B IT 950751 B IT950751 B IT 950751B IT 2237672 A IT2237672 A IT 2237672A IT 2237672 A IT2237672 A IT 2237672A IT 950751 B IT950751 B IT 950751B
Authority
IT
Italy
Prior art keywords
cineprojectors
traction
speed
electronic circuit
power transistor
Prior art date
Application number
IT2237672A
Other languages
Italian (it)
Original Assignee
Bencini Spa
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
Priority to BE789997D priority Critical patent/BE789997A/en
Application filed by Bencini Spa filed Critical Bencini Spa
Priority to IT2237672A priority patent/IT950751B/en
Priority to DE19722248378 priority patent/DE2248378A1/en
Priority to FR7235894A priority patent/FR2178518A5/fr
Priority to NL7214375A priority patent/NL7214375A/xx
Priority to JP12124872A priority patent/JPS4916429A/ja
Application granted granted Critical
Publication of IT950751B publication Critical patent/IT950751B/en

Links

Classifications

    • 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
    • H02P7/285—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 supply only
    • H02P7/288—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 supply only using variable impedance
    • H02P7/2885—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 supply only using variable impedance whereby the speed is regulated by measuring the motor speed and comparing it with a given physical value

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Control Of Direct Current Motors (AREA)
IT2237672A 1972-03-25 1972-03-25 POWER TRANSISTOR ELECTRONIC CIRCUIT FOR TRACTION AND LINEAR VARIATION OF SPEED AT CONSTANT TORQUE OF MANIFOLD MOTOR PAR TICULARLY FOR CINEPROJECTORS IT950751B (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
BE789997D BE789997A (en) 1972-03-25 IMPROVEMENTS TO CINEMATOGRAPHIC PROJECTION DEVICES
IT2237672A IT950751B (en) 1972-03-25 1972-03-25 POWER TRANSISTOR ELECTRONIC CIRCUIT FOR TRACTION AND LINEAR VARIATION OF SPEED AT CONSTANT TORQUE OF MANIFOLD MOTOR PAR TICULARLY FOR CINEPROJECTORS
DE19722248378 DE2248378A1 (en) 1972-03-25 1972-10-03 ELECTRONIC POWER TRANSISTOR CIRCUIT FOR CALIBRATING AND CHANGING THE MOTOR SPEED AT CONSTANT TORQUE, OF A COLLECTOR MOTOR, IN PARTICULAR FOR CINEMA PROJECTORS
FR7235894A FR2178518A5 (en) 1972-03-25 1972-10-05
NL7214375A NL7214375A (en) 1972-03-25 1972-10-24
JP12124872A JPS4916429A (en) 1972-03-25 1972-12-05

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT2237672A IT950751B (en) 1972-03-25 1972-03-25 POWER TRANSISTOR ELECTRONIC CIRCUIT FOR TRACTION AND LINEAR VARIATION OF SPEED AT CONSTANT TORQUE OF MANIFOLD MOTOR PAR TICULARLY FOR CINEPROJECTORS

Publications (1)

Publication Number Publication Date
IT950751B true IT950751B (en) 1973-06-20

Family

ID=11195424

Family Applications (1)

Application Number Title Priority Date Filing Date
IT2237672A IT950751B (en) 1972-03-25 1972-03-25 POWER TRANSISTOR ELECTRONIC CIRCUIT FOR TRACTION AND LINEAR VARIATION OF SPEED AT CONSTANT TORQUE OF MANIFOLD MOTOR PAR TICULARLY FOR CINEPROJECTORS

Country Status (6)

Country Link
JP (1) JPS4916429A (en)
BE (1) BE789997A (en)
DE (1) DE2248378A1 (en)
FR (1) FR2178518A5 (en)
IT (1) IT950751B (en)
NL (1) NL7214375A (en)

Also Published As

Publication number Publication date
FR2178518A5 (en) 1973-11-09
NL7214375A (en) 1973-09-27
JPS4916429A (en) 1974-02-13
BE789997A (en) 1973-02-01
DE2248378A1 (en) 1973-09-27

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