GB1337793A - Serov control systems - Google Patents

Serov control systems

Info

Publication number
GB1337793A
GB1337793A GB54871A GB54871A GB1337793A GB 1337793 A GB1337793 A GB 1337793A GB 54871 A GB54871 A GB 54871A GB 54871 A GB54871 A GB 54871A GB 1337793 A GB1337793 A GB 1337793A
Authority
GB
United Kingdom
Prior art keywords
bridge
motor
scr
energized
jan
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
GB54871A
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Publication of GB1337793A publication Critical patent/GB1337793A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction
    • G05D3/12—Control of position or direction using feedback
    • G05D3/14—Control of position or direction using feedback using an analogue comparing device
    • G05D3/1472—Control of position or direction using feedback using an analogue comparing device with potentiometer
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05D—SYSTEMS FOR CONTROLLING OR REGULATING NON-ELECTRIC VARIABLES
    • G05D3/00—Control of position or direction

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Direct Current Motors (AREA)
  • Lens Barrels (AREA)
  • Variable Magnification In Projection-Type Copying Machines (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

1337793 Electrical measuring bridges RICOH K K 6 Jan 1971 [24 Jan 1970] 548/71 Heading G1U A self-balancing bridge arrangement comprises a bridge network CDEF energized from a source E 2 , first and second SCR's Q 1 , Q 2 which respond to out-of-balance voltages of one polarity and of the other polarity respectively to energize corresponding relays RA 1 , RA 2 , and a motor (not shown) driven in one sense or the other, according to which relay is energized, to balance the bridge by adjustment of a bridge resistor R B . The SCR's are connected in series with their associated relays RA 1 , RA 2 across a source E 1 of unsmoothed full or half-wave rectified A.C. Temperature compensating diodes may be included (no details). The motor is a D.C. or split phase induction motor and also drives a zoom lens housing of a photo-copying machine, so that the housing is positioned in accordance with the manually-adjusted setting of the other bridge resistance R A .
GB54871A 1970-01-24 1971-01-06 Serov control systems Expired GB1337793A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP649070 1970-01-24

Publications (1)

Publication Number Publication Date
GB1337793A true GB1337793A (en) 1973-11-21

Family

ID=11639900

Family Applications (1)

Application Number Title Priority Date Filing Date
GB54871A Expired GB1337793A (en) 1970-01-24 1971-01-06 Serov control systems

Country Status (3)

Country Link
US (1) US3697849A (en)
DE (1) DE2102983C3 (en)
GB (1) GB1337793A (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3915325A (en) * 1972-11-09 1975-10-28 Int Harvester Co Electronic control device
US3789283A (en) * 1973-02-20 1974-01-29 Honeywell Inc Condition control reversible motor system
GB1490083A (en) * 1974-03-14 1977-10-26 Marconi Co Ltd Control arrangements
US4738368A (en) * 1983-07-11 1988-04-19 Bell & Howell Company Elevator mechanism for the code reader of a mail sorting machine
DE3402225A1 (en) * 1984-01-24 1985-07-25 Zinser Textilmaschinen Gmbh, 7333 Ebersbach RING SPIDER OR TWINING MACHINE
DE3511466A1 (en) * 1985-03-29 1986-10-09 ANT Nachrichtentechnik GmbH, 7150 Backnang THROUGH A MOTOR ADJUSTABLE LEVEL CONTROL

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2971142A (en) * 1958-05-09 1961-02-07 Square D Co Transistorized circuit for positioning slave potentiometers
US3241047A (en) * 1962-08-13 1966-03-15 Superior Electric Co Remotely controlled adjustable voltage circuit

Also Published As

Publication number Publication date
DE2102983A1 (en) 1971-08-12
US3697849A (en) 1972-10-10
DE2102983B2 (en) 1974-06-20
DE2102983C3 (en) 1975-02-13

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee