JPS4991666A - - Google Patents

Info

Publication number
JPS4991666A
JPS4991666A JP48130626A JP13062673A JPS4991666A JP S4991666 A JPS4991666 A JP S4991666A JP 48130626 A JP48130626 A JP 48130626A JP 13062673 A JP13062673 A JP 13062673A JP S4991666 A JPS4991666 A JP S4991666A
Authority
JP
Japan
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.)
Granted
Application number
JP48130626A
Other languages
Japanese (ja)
Other versions
JPS5335742B2 (en:Method
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 filed Critical
Publication of JPS4991666A publication Critical patent/JPS4991666A/ja
Publication of JPS5335742B2 publication Critical patent/JPS5335742B2/ja
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G3/00—Gain control in amplifiers or frequency changers
    • H03G3/20—Automatic control
    • H03G3/30—Automatic control in amplifiers having semiconductor devices
    • H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
    • H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/02—Magnetic compasses
    • G01C17/28—Electromagnetic compasses
    • G01C17/30—Earth-inductor compasses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
    • G01C17/00—Compasses; Devices for ascertaining true or magnetic north for navigation or surveying purposes
    • G01C17/38—Testing, calibrating, or compensating of compasses
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R33/00—Arrangements or instruments for measuring magnetic variables
    • G01R33/02—Measuring direction or magnitude of magnetic fields or magnetic flux
    • G01R33/025—Compensating stray fields
    • G—PHYSICS
    • G08—SIGNALLING
    • G08C—TRANSMISSION SYSTEMS FOR MEASURED VALUES, CONTROL OR SIMILAR SIGNALS
    • G08C19/00—Electric signal transmission systems
    • G08C19/38—Electric signal transmission systems using dynamo-electric devices
    • G08C19/46—Electric signal transmission systems using dynamo-electric devices of which both rotor and stator carry windings
    • G08C19/48—Electric signal transmission systems using dynamo-electric devices of which both rotor and stator carry windings being the type with a three-phase stator and a rotor fed by constant-frequency AC, e.g. selsyn, magslip
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G1/00—Details of arrangements for controlling amplification
    • H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
    • H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
    • H03G1/0047—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using photo-electric elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04J—MULTIPLEX COMMUNICATION
    • H04J7/00—Multiplex systems in which the amplitudes or durations of the signals in individual channels are characteristic of those channels

Landscapes

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • General Physics & Mathematics (AREA)
  • Environmental & Geological Engineering (AREA)
  • Geology (AREA)
  • Electromagnetism (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Multimedia (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Amplifiers (AREA)
  • Magnetic Resonance Imaging Apparatus (AREA)
JP13062673A 1972-12-26 1973-11-20 Expired JPS5335742B2 (en:Method)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US31814472A 1972-12-26 1972-12-26

Publications (2)

Publication Number Publication Date
JPS4991666A true JPS4991666A (en:Method) 1974-09-02
JPS5335742B2 JPS5335742B2 (en:Method) 1978-09-28

Family

ID=23236847

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13062673A Expired JPS5335742B2 (en:Method) 1972-12-26 1973-11-20

Country Status (6)

Country Link
US (1) US3784753A (en:Method)
JP (1) JPS5335742B2 (en:Method)
DE (1) DE2362975A1 (en:Method)
FR (1) FR2212067A5 (en:Method)
GB (1) GB1449869A (en:Method)
IT (1) IT1000203B (en:Method)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA1059311A (en) * 1974-12-02 1979-07-31 James R. Erspamer Flux valve heading repeater compensation systems
JPS57125173A (en) * 1981-04-02 1982-08-04 Yoshino Kogyosho Co Ltd Unsealing mechanism
CA1220279A (en) * 1985-06-20 1987-04-07 Her Majesty The Queen In Right Of Canada As Represented By The Minister Of National Defence Of Her Majesty's Canadian Government Precision magnetometer orientation device

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3619511A (en) * 1969-07-17 1971-11-09 North American Rockwell Data normalizing apparatus

Also Published As

Publication number Publication date
FR2212067A5 (en:Method) 1974-07-19
IT1000203B (it) 1976-03-30
US3784753A (en) 1974-01-08
DE2362975A1 (de) 1974-06-27
GB1449869A (en) 1976-09-15
JPS5335742B2 (en:Method) 1978-09-28

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