GB872776A - Improvements relating to variable d.c. transformer circuits - Google Patents

Improvements relating to variable d.c. transformer circuits

Info

Publication number
GB872776A
GB872776A GB3093056A GB3093056A GB872776A GB 872776 A GB872776 A GB 872776A GB 3093056 A GB3093056 A GB 3093056A GB 3093056 A GB3093056 A GB 3093056A GB 872776 A GB872776 A GB 872776A
Authority
GB
United Kingdom
Prior art keywords
valve
ratio
conducting
generator
potentiometer
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
GB3093056A
Inventor
Eric Lawrence Casling White
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.)
EMI Ltd
Electrical and Musical Industries Ltd
Original Assignee
EMI Ltd
Electrical and Musical Industries 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 EMI Ltd, Electrical and Musical Industries Ltd filed Critical EMI Ltd
Priority to GB3093056A priority Critical patent/GB872776A/en
Publication of GB872776A publication Critical patent/GB872776A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current
    • G05F1/46—Regulating voltage or current wherein the variable actually regulated by the final control device is dc
    • G05F1/52—Regulating voltage or current wherein the variable actually regulated by the final control device is dc using discharge tubes in series with the load as final control devices

Landscapes

  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Ignition Installations For Internal Combustion Engines (AREA)

Abstract

872,776. Automatic voltage control systems. ELECTRIC & MUSICAL INDUSTRIES Ltd. Oct. 4, 1957 [Oct. 11, 1956], No. 30930/56. Class 38 (4). A variable direct current transforming circuit arrangement comprises two alternately-conducting switches 4, 6 and an inductive storage means 5 the transformation ratio of the arrangement being governed by the ratio of the conducting times of the switches. An inductor 5 receives energy from a D.C. source 1 when a valve 4 is conducting whilst the change of potential of the cathode of the valve 4 when it is cut off causes the valve 6 to conduct, whereby the energy in the inductor 5 is discharged into a load 3. The ratio of the input volts E 1 to the output volts E 2 is adjustable by means of a potentiometer 9 connected across the load 3, the voltage tapped off this potentiometer being compared with a reference voltage E, the differing being fed to a switching generator 7 by way of an amplifier 8, the switching generator 7 controlling the on and off periods of the valve 4. The generator 7 may be a valve or transistor multivibrator whose output controls the grid potential of the valve 4 and the reference voltage E may be obtained by way of a Zener diode. The transforming arrangement may have a step-up ratio by arranging the valve 4 in shunt to the supply instead of in series.
GB3093056A 1956-10-11 1956-10-11 Improvements relating to variable d.c. transformer circuits Expired GB872776A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
GB3093056A GB872776A (en) 1956-10-11 1956-10-11 Improvements relating to variable d.c. transformer circuits

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB3093056A GB872776A (en) 1956-10-11 1956-10-11 Improvements relating to variable d.c. transformer circuits

Publications (1)

Publication Number Publication Date
GB872776A true GB872776A (en) 1961-07-12

Family

ID=10315325

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3093056A Expired GB872776A (en) 1956-10-11 1956-10-11 Improvements relating to variable d.c. transformer circuits

Country Status (1)

Country Link
GB (1) GB872776A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237088A (en) * 1961-08-17 1966-02-22 Maxson Electronics Corp Current regulator for inductive loads
US3328674A (en) * 1962-12-04 1967-06-27 Gen Electric Co Ltd Series transistor voltage regulators with filter circuits
EP2564513B1 (en) * 2010-04-30 2017-07-12 Acco Rf switches

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237088A (en) * 1961-08-17 1966-02-22 Maxson Electronics Corp Current regulator for inductive loads
US3328674A (en) * 1962-12-04 1967-06-27 Gen Electric Co Ltd Series transistor voltage regulators with filter circuits
EP2564513B1 (en) * 2010-04-30 2017-07-12 Acco Rf switches

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