GB1436848A - Electrical resistance control apparatus - Google Patents

Electrical resistance control apparatus

Info

Publication number
GB1436848A
GB1436848A GB1860773A GB1860773A GB1436848A GB 1436848 A GB1436848 A GB 1436848A GB 1860773 A GB1860773 A GB 1860773A GB 1860773 A GB1860773 A GB 1860773A GB 1436848 A GB1436848 A GB 1436848A
Authority
GB
United Kingdom
Prior art keywords
attenuator
control
fader
wipers
april
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
GB1860773A
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.)
PENNY GILES CONDUCTIVE PLASTIC
Original Assignee
PENNY GILES CONDUCTIVE PLASTIC
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 PENNY GILES CONDUCTIVE PLASTIC filed Critical PENNY GILES CONDUCTIVE PLASTIC
Priority to GB1860773A priority Critical patent/GB1436848A/en
Publication of GB1436848A publication Critical patent/GB1436848A/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
    • G05B19/12—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers
    • G05B19/16—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using record carriers using magnetic record carriers
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/244—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains
    • G01D5/249—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means influencing characteristics of pulses or pulse trains; generating pulses or pulse trains using pulse code
    • G01D5/2497—Absolute encoders
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/12—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable using electric or magnetic means
    • G01D5/25—Selecting one or more conductors or channels from a plurality of conductors or channels, e.g. by closing contacts
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
    • H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
    • H03H7/24—Frequency- independent attenuators

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Automation & Control Theory (AREA)
  • Control Of Amplification And Gain Control (AREA)

Abstract

1436848 Position encoders PENNY & GILES CONDUCTIVE PLASTICS Ltd 17 April 1974 [18 April 1973] 18607/73 Heading H3H The position of a fader or attenuator control 3 is digitally encoded. As shown, a printed circuit attenuator 10 co-operates with wipers 8 whose position is encoded in binary Gray code by wipers 9 co-operating with a printed circuit code board 11. Wiper 9<SP>1</SP> receives supply voltage from a continuous track, the coded output is taken from end terminals 14. Alternatively, the attenuator and encoder may be on the same board or the coded position signals may control an attenuator or the gain of an amplifier. Optical or magnetic encoders may be used. The digital signals may be recorded and used to control the position of the fader during playback, while permitting manual override.
GB1860773A 1973-04-18 1973-04-18 Electrical resistance control apparatus Expired GB1436848A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB1860773A GB1436848A (en) 1973-04-18 1973-04-18 Electrical resistance control apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB1860773A GB1436848A (en) 1973-04-18 1973-04-18 Electrical resistance control apparatus

Publications (1)

Publication Number Publication Date
GB1436848A true GB1436848A (en) 1976-05-26

Family

ID=10115355

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1860773A Expired GB1436848A (en) 1973-04-18 1973-04-18 Electrical resistance control apparatus

Country Status (1)

Country Link
GB (1) GB1436848A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0212128A2 (en) * 1985-08-23 1987-03-04 Robert Bosch Gmbh Photoelectric setting device
GB2181610A (en) * 1985-10-08 1987-04-23 Hewlett Packard Ltd Monitoring apparatus
GB2190995A (en) * 1986-04-09 1987-12-02 Kelly H P G Linear fader
GB2223898A (en) * 1988-09-20 1990-04-18 C & K Switches Limited Position switches
WO2002071602A1 (en) * 2001-03-02 2002-09-12 Penny & Giles Controls Limited Potentiometer with an optical position encoder

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0212128A2 (en) * 1985-08-23 1987-03-04 Robert Bosch Gmbh Photoelectric setting device
EP0212128A3 (en) * 1985-08-23 1989-07-19 Robert Bosch Gmbh Photoelectric setting device
GB2181610A (en) * 1985-10-08 1987-04-23 Hewlett Packard Ltd Monitoring apparatus
GB2190995A (en) * 1986-04-09 1987-12-02 Kelly H P G Linear fader
GB2223898A (en) * 1988-09-20 1990-04-18 C & K Switches Limited Position switches
GB2223898B (en) * 1988-09-20 1992-11-18 C & K Switches Limited Position switches
WO2002071602A1 (en) * 2001-03-02 2002-09-12 Penny & Giles Controls Limited Potentiometer with an optical position encoder

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Legal Events

Date Code Title Description
PS Patent sealed
PE20 Patent expired after termination of 20 years

Effective date: 19940416