GB1483744A - Transistor switching circuit - Google Patents

Transistor switching circuit

Info

Publication number
GB1483744A
GB1483744A GB5054074A GB5054074A GB1483744A GB 1483744 A GB1483744 A GB 1483744A GB 5054074 A GB5054074 A GB 5054074A GB 5054074 A GB5054074 A GB 5054074A GB 1483744 A GB1483744 A GB 1483744A
Authority
GB
United Kingdom
Prior art keywords
winding
transistor
current
supplied
control
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
GB5054074A
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.)
Licentia Patent Verwaltungs GmbH
Original Assignee
Licentia Patent Verwaltungs GmbH
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 claimed from DE19732358322 external-priority patent/DE2358322C3/en
Application filed by Licentia Patent Verwaltungs GmbH filed Critical Licentia Patent Verwaltungs GmbH
Publication of GB1483744A publication Critical patent/GB1483744A/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
    • H03K17/601—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 using transformer coupling

Landscapes

  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Abstract

1483744 D.C.-D.C. conversion LICENTIA PATENT VERWALTUNGS GmbH 21 Nov 1974 [23 Nov 1973] 50540/74 Heading H2F [Also in Division H3] Current to a load 10 is switched by a blocking oscillator 5 which is switched on by the cessation of current in winding 4 when control transistor 6 is cut-off by a control pulse 12. At the end of the control pulse, transistor 6 conducts and capacitor 13 discharges to speed the build-up of current in winding 4 and the flushing of charge carriers from the base of transistor 5. Initially, current is supplied to winding 4 through parallel resistors 17, 18, but when the core of transformer 1 saturates the voltage across winding 4 falls to a low value and control circuit 16 switches off transistor 19 so that winding 4 is supplied through the higher resistance 17 only. The power supplied to load 10 may be varied by varying the width of pulse 12.
GB5054074A 1973-11-23 1974-11-21 Transistor switching circuit Expired GB1483744A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19732358322 DE2358322C3 (en) 1973-11-23 Circuit arrangement for controlling a transistor power switch

Publications (1)

Publication Number Publication Date
GB1483744A true GB1483744A (en) 1977-08-24

Family

ID=5898832

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5054074A Expired GB1483744A (en) 1973-11-23 1974-11-21 Transistor switching circuit

Country Status (3)

Country Link
FR (1) FR2252705B1 (en)
GB (1) GB1483744A (en)
IT (1) IT1025929B (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124050A (en) * 1982-06-28 1984-02-08 Gould Instr Semiconductor switching circuits

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2459868A1 (en) * 1974-12-18 1976-06-24 Bbc Brown Boveri & Cie CONTROL CIRCUIT OF POWER TRANSISTORS FOR CLOCKED POWER ADJUSTERS
JPS57174933A (en) * 1981-04-01 1982-10-27 Lucas Industries Ltd Transistor drive circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2124050A (en) * 1982-06-28 1984-02-08 Gould Instr Semiconductor switching circuits

Also Published As

Publication number Publication date
DE2358322B2 (en) 1976-09-16
FR2252705B1 (en) 1978-06-16
IT1025929B (en) 1978-08-30
DE2358322A1 (en) 1975-10-09
FR2252705A1 (en) 1975-06-20

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Legal Events

Date Code Title Description
PS Patent sealed
PCNP Patent ceased through non-payment of renewal fee