GB705242A - Electrical control device - Google Patents

Electrical control device

Info

Publication number
GB705242A
GB705242A GB22932/52A GB2293252A GB705242A GB 705242 A GB705242 A GB 705242A GB 22932/52 A GB22932/52 A GB 22932/52A GB 2293252 A GB2293252 A GB 2293252A GB 705242 A GB705242 A GB 705242A
Authority
GB
United Kingdom
Prior art keywords
winding
output
load
circuit
point
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
GB22932/52A
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.)
ABB Norden Holding AB
Original Assignee
ASEA AB
Allmanna Svenska Elektriska AB
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 ASEA AB, Allmanna Svenska Elektriska AB filed Critical ASEA AB
Publication of GB705242A publication Critical patent/GB705242A/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
    • 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
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03F—AMPLIFIERS
    • H03F9/00—Magnetic amplifiers
    • H03F9/04—Magnetic amplifiers voltage-controlled, i.e. the load current flowing in only one direction through a main coil, e.g. Logan circuits
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
    • H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
    • H03K3/45—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of non-linear magnetic or dielectric devices
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F3/00—Cores, Yokes, or armatures
    • H01F3/10—Composite arrangements of magnetic circuits
    • H01F2003/106—Magnetic circuits using combinations of different magnetic materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01F—MAGNETS; INDUCTANCES; TRANSFORMERS; SELECTION OF MATERIALS FOR THEIR MAGNETIC PROPERTIES
    • H01F29/00—Variable transformers or inductances not covered by group H01F21/00
    • H01F29/14—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias
    • H01F2029/143—Variable transformers or inductances not covered by group H01F21/00 with variable magnetic bias with control winding for generating magnetic bias

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Automation & Control Theory (AREA)
  • Nonlinear Science (AREA)
  • Load-Engaging Elements For Cranes (AREA)
  • Hard Magnetic Materials (AREA)
  • Dc-Dc Converters (AREA)
  • Coils Or Transformers For Communication (AREA)

Abstract

705,242. Magnetic amplifiers. ALLMANNA SVENSKA ELEKTRISKA AKTIEBOLAGET Sept. 12, 1952 [Sept. 22, 1951], No. 22932/52. Class 40 (4) A temporarily acting D.C. control signal applied to a magnetic amplifier causes an alteration in the output which persists after the signal terminates. The extent of the output alteration may also be determined by the duration of the control signal. As shown in Fig. 1, the amplifier has a three-legged core 1 carrying A.C. load windings 2, 3 and a D.C. winding 5, the centre leg being traversed only by D.C. flux and comprising a portion 4 having a high remanence and coercive force. The manner of operation is shown in Fig. 2 in which i1 is a D.C. bias current giving a load voltage corresponding to point F. When a D.C. control current i2 is applied, the load voltage rises to point B and falls only slightly to point D when the control current ceases, due to the wide hysteresis loop. In a circuit arrangement, Fig. 3, the load windings 2, 3 are energized in series with a load 12 from an A.C. supply 10 and are connected with rectifiers 7, 8 to provide auto-excitation. A self-magnetizing winding 5 is energized from a rectifier 11 while a bias current corresponding to il is applied to winding 13. The control current acts in winding 6 over a delay circuit comprising a capacitor 15 and a resistor 16 and its polarity and duration is determined by contacts 18 and 19. Due to the delay circuit, the extent of output variation depends on the time a contact 18 or 19 is closed. The delay circuit may alternatively be connected in the self-magnetizing circuit or the output circuit and may comprise a capacitor, an inductor or a thermistor.
GB22932/52A 1951-09-22 1952-09-12 Electrical control device Expired GB705242A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SE306767X 1951-09-22

Publications (1)

Publication Number Publication Date
GB705242A true GB705242A (en) 1954-03-10

Family

ID=20307535

Family Applications (1)

Application Number Title Priority Date Filing Date
GB22932/52A Expired GB705242A (en) 1951-09-22 1952-09-12 Electrical control device

Country Status (5)

Country Link
US (1) US2818545A (en)
BE (1) BE514329A (en)
CH (1) CH306767A (en)
FR (1) FR1063532A (en)
GB (1) GB705242A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2932787A (en) * 1956-03-19 1960-04-12 Allis Chalmers Mfg Co Magnetic amplifier
US3700913A (en) * 1970-08-12 1972-10-24 Hughes Aircraft Co Trigger transformer for pulse forming network
US4205288A (en) * 1978-10-27 1980-05-27 Westinghouse Electric Corp. Transformer with parallel magnetic circuits of unequal mean lengths and loss characteristics

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1910381A (en) * 1929-12-26 1933-05-23 Union Switch & Signal Co Electrical translating apparatus
US1921703A (en) * 1931-11-13 1933-08-08 Gen Electric Variable reactance device
US2470556A (en) * 1945-11-16 1949-05-17 Asea Ab Rectifier with a voltage regulating reactor saturable by direct current
BE475361A (en) * 1946-08-27
US2552203A (en) * 1948-04-02 1951-05-08 Gen Electric Voltage doubler magnetic amplifier

Also Published As

Publication number Publication date
CH306767A (en) 1955-04-30
US2818545A (en) 1957-12-31
BE514329A (en)
FR1063532A (en) 1954-05-04

Similar Documents

Publication Publication Date Title
US2925546A (en) Magnetic reset control for rectifier
GB909023A (en) Magnetic means for indicating the movements and stoppages of movable objects
US2809343A (en) Amplifiers
GB705242A (en) Electrical control device
US2937321A (en) Current limiting in the windings of electromagnetic devices
GB818768A (en) Improvements in or relating to transistor circuits
GB837005A (en) Improvements in or relating to logical circuits using transformers
US3122701A (en) Magnetic amplifier circuit
US2996627A (en) Magnetic amplifier relay with snap action
GB836019A (en) Magnetic voltage regulators for transformers with stepped switching mechanisms
SU117587A1 (en) Contactless time relay
SU490108A1 (en) Magnetic analog control and storage device
GB832435A (en) Improvements in or relating to pulse controlled duo-stable circuit arrangements
SU150133A1 (en) Transistor magnetic amplifier
SU103065A1 (en) Contactless magnetic relay
SU146379A1 (en) Voltage Regulator for DC Generators
SU140880A1 (en) Constant Voltage to AC Voltage Transformer
GB939272A (en) Retentive memory circuit
US3497819A (en) Magnetic amplifier of the kind having a controllable shunt
GB769186A (en) Improvements in or relating to magnetic amplifiers
SU120538A1 (en) Differential Magnetic Amplifier
US3486035A (en) Magnetostatic relay
SU368665A1 (en) RELAY MINIMAT CURRENT
SU99645A1 (en) High Speed Magnetic Relay
GB831791A (en) Improvements in and relating to magnetic transductors