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GB927468A - A power dissipation protection (or reducing) circuit for transistor switches having inductive loads - Google Patents

A power dissipation protection (or reducing) circuit for transistor switches having inductive loads

Info

Publication number
GB927468A
GB927468A GB2492660A GB2492660A GB927468A GB 927468 A GB927468 A GB 927468A GB 2492660 A GB2492660 A GB 2492660A GB 2492660 A GB2492660 A GB 2492660A GB 927468 A GB927468 A GB 927468A
Authority
GB
United Kingdom
Prior art keywords
transistor
circuit
reducing
resistor
capacitor
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
GB2492660A
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.)
North American Aviation Corp
Original Assignee
North American Aviation Corp
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 North American Aviation Corp filed Critical North American Aviation Corp
Publication of GB927468A publication Critical patent/GB927468A/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
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage
    • H03K17/081—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit
    • H03K17/0814—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit
    • H03K17/08146—Modifications for protecting switching circuit against overcurrent or overvoltage without feedback from the output circuit to the control circuit by measures taken in the output circuit in bipolar transistor switches
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/08—Modifications for protecting switching circuit against overcurrent or overvoltage

Landscapes

  • Electronic Switches (AREA)
  • Dc-Dc Converters (AREA)
  • Amplifiers (AREA)

Abstract

927,468. Transistor switching circuits. NORTH AMERICAN AVIATION Inc. July 18, 1960 [Aug. 11, 1959], No. 24926/60. Class 40 (6). An arrangement for preventing excessive switchoff voltages from building up across a transistor switch, includes a transistor 1; a first output electrode 7 connected in series with a parallel combination of an inductor 9 and a diode 18; and a further circuit comprising a parallel arrangement of a diode 12 and a resistor 17 in series with a capacitor 13, connected between the output electrode 7, and a further output electrode 5. When the transistor is switched off by a pulse generator MV, capacitor 13 charges through the load 9, a resistor 8 being included to determine the charging time constant. The capacitor is discharged through resistor 17 when the transistor is switched on.
GB2492660A 1959-08-11 1960-07-18 A power dissipation protection (or reducing) circuit for transistor switches having inductive loads Expired GB927468A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US83296759A 1959-08-11 1959-08-11

Publications (1)

Publication Number Publication Date
GB927468A true GB927468A (en) 1963-05-29

Family

ID=25263064

Family Applications (1)

Application Number Title Priority Date Filing Date
GB2492660A Expired GB927468A (en) 1959-08-11 1960-07-18 A power dissipation protection (or reducing) circuit for transistor switches having inductive loads

Country Status (3)

Country Link
DE (1) DE1169517B (en)
FR (1) FR1262886A (en)
GB (1) GB927468A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250922A (en) * 1964-06-12 1966-05-10 Hughes Aircraft Co Current driver for core memory apparatus
GB2163022A (en) * 1984-08-10 1986-02-12 Danfoss As Electronic switching apparatus

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2641183C2 (en) * 1976-09-13 1986-08-28 Andreas Prof. Dr.-Ing.habil. 7000 Stuttgart Boehringer Installation without losses due to the principle of operation to relieve electrical or electronic one-way switches from their power dissipation when they are switched off
DE2644715C2 (en) * 1976-10-04 1985-02-28 Andreas Prof. Dr.-Ing.habil. 7000 Stuttgart Boehringer Device for relieving electrical or electronic one-way switches from high power dissipation during switch-on - in which a non-zero current previously flowing in a different circuit path changes to the relevant one-way switch - and from excessive blocking voltage stress at the end of switch-off

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1071133B (en) * 1958-08-08 1959-12-17 Standard Efcktrik Lorenz Aktiengesellschaft, Stuttgart-Zuffenhausen ARRANGEMENT FOR LIMITING DISCONNECTING VOLTAGES AT INDUCTIVITIES IN A SERIES WITH TRANSISTOR SWITCHES

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3250922A (en) * 1964-06-12 1966-05-10 Hughes Aircraft Co Current driver for core memory apparatus
GB2163022A (en) * 1984-08-10 1986-02-12 Danfoss As Electronic switching apparatus

Also Published As

Publication number Publication date
DE1169517B (en) 1964-05-06
FR1262886A (en) 1961-06-05

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