GB874115A - An improved driving circuit for square loop magnetic cores - Google Patents

An improved driving circuit for square loop magnetic cores

Info

Publication number
GB874115A
GB874115A GB17808/59A GB1780859A GB874115A GB 874115 A GB874115 A GB 874115A GB 17808/59 A GB17808/59 A GB 17808/59A GB 1780859 A GB1780859 A GB 1780859A GB 874115 A GB874115 A GB 874115A
Authority
GB
United Kingdom
Prior art keywords
terminal
winding
driving circuit
diode
collector
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
GB17808/59A
Inventor
William Albert Edwar Loughhead
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.)
Ericsson Telephones Ltd
Original Assignee
Ericsson Telephones 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
Priority to NL251963D priority Critical patent/NL251963A/xx
Application filed by Ericsson Telephones Ltd filed Critical Ericsson Telephones Ltd
Priority to GB17808/59A priority patent/GB874115A/en
Priority to US30886A priority patent/US3112407A/en
Priority to DEE19378A priority patent/DE1212992B/en
Publication of GB874115A publication Critical patent/GB874115A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/64—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors having inductive loads
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/04—Modifications for accelerating switching
    • 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
    • H03K3/26—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback
    • H03K3/30—Generators characterised by the type of circuit or by the means used for producing pulses by the use, as active elements, of bipolar transistors with internal or external positive feedback using a transformer for feedback, e.g. blocking oscillator
    • 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

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Nonlinear Science (AREA)
  • Dc-Dc Converters (AREA)
  • Electronic Switches (AREA)

Abstract

874,115. Transistor switching circuits. ERICSSON TELEPHONES Ltd. May 18, 1960 [May 25, 1959], No. 17808/59. Class 40(6) A driving circuit for a square loop magnetic core, comprises a transistor VT2 having its collector connected through a driving winding 2 of a magnetic core 1 to a first terminal, its emitter connected through a resistor R2 to a second terminal, and its base connected through a resistor R1 in parallel with a diode D1 to a third terminal and a second diode D2 connected from the third terminal to the collector. Either the second or the third terminal is connected to the output of a blocking oscillator and the other two are connected to the two poles of a source of operating potential, the arrangement being such that output pulses from the blocking oscillator cause the collector of VT2 to bottom to an extent controlled by diode D2. As shown in Fig. 4, the blocking oscillator comprises a transistor VT1 with a transformer TF connected between the collector and emitter electrodes, the primary winding being shunted by a diode D3 and a resistor R6 in series. Triggering pulses are applied to terminal 15, and the oscillator output is produced in one or more tertiary windings 10 on transformer TF, each winding being connected to a separate driving circuit. The output from the winding 10 is fed on to the base of transistor VT2 to cut it on and cause current to flow through the winding 2 of core 1. Several cores may be connected to each driving circuit with their windings 2 in series. In an alternative arrangement, Fig. 6 (not shown), the input to the drive circuit is fed on to the emitter instead of the base.
GB17808/59A 1959-05-25 1959-05-25 An improved driving circuit for square loop magnetic cores Expired GB874115A (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
NL251963D NL251963A (en) 1959-05-25
GB17808/59A GB874115A (en) 1959-05-25 1959-05-25 An improved driving circuit for square loop magnetic cores
US30886A US3112407A (en) 1959-05-25 1960-05-23 Driving circuit for square loop magnetic cores
DEE19378A DE1212992B (en) 1959-05-25 1960-05-25 Circuit arrangement for magnetizing magnetic cores with a square hysteresis loop

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
GB17808/59A GB874115A (en) 1959-05-25 1959-05-25 An improved driving circuit for square loop magnetic cores

Publications (1)

Publication Number Publication Date
GB874115A true GB874115A (en) 1961-08-02

Family

ID=10101593

Family Applications (1)

Application Number Title Priority Date Filing Date
GB17808/59A Expired GB874115A (en) 1959-05-25 1959-05-25 An improved driving circuit for square loop magnetic cores

Country Status (4)

Country Link
US (1) US3112407A (en)
DE (1) DE1212992B (en)
GB (1) GB874115A (en)
NL (1) NL251963A (en)

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2843762A (en) * 1954-10-25 1958-07-15 Bell Telephone Labor Inc Bistable transistor trigger circuit
DE1039567B (en) * 1956-10-05 1958-09-25 Ibm Deutschland Switching matrix consisting of bistable magnetic cores

Also Published As

Publication number Publication date
US3112407A (en) 1963-11-26
NL251963A (en)
DE1212992B (en) 1966-03-24

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