GB639127A - Improvements in or relating to magnetic amplifiers - Google Patents

Improvements in or relating to magnetic amplifiers

Info

Publication number
GB639127A
GB639127A GB36434/46A GB3643446A GB639127A GB 639127 A GB639127 A GB 639127A GB 36434/46 A GB36434/46 A GB 36434/46A GB 3643446 A GB3643446 A GB 3643446A GB 639127 A GB639127 A GB 639127A
Authority
GB
United Kingdom
Prior art keywords
modulator
carrier
amplifier
output
signal
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
GB36434/46A
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.)
Koninklijke Philips NV
Original Assignee
Philips Gloeilampenfabrieken NV
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 Philips Gloeilampenfabrieken NV filed Critical Philips Gloeilampenfabrieken NV
Publication of GB639127A publication Critical patent/GB639127A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F9/00—Magnetic amplifiers
    • H03F9/02—Magnetic amplifiers current-controlled, i.e. the load current flowing in both directions through a main coil
    • 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
    • G05B11/00—Automatic controllers
    • G05B11/01—Automatic controllers electric
    • G05B11/012—Automatic controllers electric details of the transmission means
    • G05B11/016—Automatic controllers electric details of the transmission means using inductance means

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Power Engineering (AREA)
  • Telephonic Communication Services (AREA)

Abstract

639,127. Magnetic amplifiers. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. Dec. 10; 1946, No. 36434. Convention date, Aug. 14, 1943. [Class 40 (iv)] A carrier oscillation modulated with a signal is used to control the output of an auxiliary oscillator by means of a magnetic amplifier, the output is rectified to provide an amplified form of the original signal and a portion of the output is fed back through a modulator to the input of the amplifier. The frequency of the carrier is preferably high compared with that of the auxiliary oscillator. There are no direct current windings on the amplifier. In one arrangement, Fig. 1, the signal from terminals 1, 2 and a carrier oscillation generated at 4 are fed through a modulator 3 to the input winding 5 of an amplifier. The secondary winding 7, which has no transformer coupling with 5, is connected in series with an auxiliary oscillator 8 and a detector 9. A portion of the detector output is fed back over conductors 12 to the modulator 3. In a carrier wave telephone system, Fig. 2, a modulator carrier is applied to the winding 5. The feed-back circuit includes a modulator 13 and a phaseshifting network 15. An oscillator 14 generates the same frequency as the carrier.
GB36434/46A 1943-08-14 1946-12-10 Improvements in or relating to magnetic amplifiers Expired GB639127A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
NL639127X 1943-08-14

Publications (1)

Publication Number Publication Date
GB639127A true GB639127A (en) 1950-06-21

Family

ID=19788956

Family Applications (1)

Application Number Title Priority Date Filing Date
GB36434/46A Expired GB639127A (en) 1943-08-14 1946-12-10 Improvements in or relating to magnetic amplifiers

Country Status (1)

Country Link
GB (1) GB639127A (en)

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