GB720197A - Improvements in and relating to magnetic amplifiers - Google Patents

Improvements in and relating to magnetic amplifiers

Info

Publication number
GB720197A
GB720197A GB347652A GB347652A GB720197A GB 720197 A GB720197 A GB 720197A GB 347652 A GB347652 A GB 347652A GB 347652 A GB347652 A GB 347652A GB 720197 A GB720197 A GB 720197A
Authority
GB
United Kingdom
Prior art keywords
feed
amplifiers
magnetic amplifiers
control circuit
winding
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
GB347652A
Inventor
Alan Thomas
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.)
Ultra Electric Ltd
Original Assignee
Ultra Electric 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 Ultra Electric Ltd filed Critical Ultra Electric Ltd
Priority to GB347652A priority Critical patent/GB720197A/en
Publication of GB720197A publication Critical patent/GB720197A/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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Magnetic Bearings And Hydrostatic Bearings (AREA)

Abstract

720,197. Magnetic amplifiers. ULTRA, ELECTRIC, Ltd. Oct. 21, 1952 [Feb. 9, 1952], No. 3476/52. Class 40 (4). Magnetic amplifiers 1-3 connected in cascade have positive or negative feed-back proportional to the rate of change of output applied to the first amplifying stage from one of the succeeding stages, the feed-back current being directly induced in an amplifier winding 4 when the D.C. flux varies. A rectifier 7 may be included in the feed-back circuit to render the feed-back effective for changes of D.C. excitation in one direction only. Instead of providing a feed-back winding 5 on the first amplifier stage, the feed-back may be applied directly to the control circuit across a series-connected resistor, Fig. 2 (not shown). The arrangement may also be applied to push-pull amplifiers, the individual feedbacks of the two amplifiers being applied to separate or to common windings on the first amplifying stage. Alternatively the two feed-backs may be combined in a resistance network which injects an E.M.F. into the control circuit.
GB347652A 1952-02-09 1952-02-09 Improvements in and relating to magnetic amplifiers Expired GB720197A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB347652A GB720197A (en) 1952-02-09 1952-02-09 Improvements in and relating to magnetic amplifiers

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB347652A GB720197A (en) 1952-02-09 1952-02-09 Improvements in and relating to magnetic amplifiers

Publications (1)

Publication Number Publication Date
GB720197A true GB720197A (en) 1954-12-15

Family

ID=9759051

Family Applications (1)

Application Number Title Priority Date Filing Date
GB347652A Expired GB720197A (en) 1952-02-09 1952-02-09 Improvements in and relating to magnetic amplifiers

Country Status (1)

Country Link
GB (1) GB720197A (en)

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