GB910430A - Electrical circuit protective arrangements - Google Patents

Electrical circuit protective arrangements

Info

Publication number
GB910430A
GB910430A GB3037/61A GB303761A GB910430A GB 910430 A GB910430 A GB 910430A GB 3037/61 A GB3037/61 A GB 3037/61A GB 303761 A GB303761 A GB 303761A GB 910430 A GB910430 A GB 910430A
Authority
GB
United Kingdom
Prior art keywords
transistor
load
device connected
supply source
electrical circuit
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
GB3037/61A
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.)
NCR Voyix Corp
National Cash Register Co
Original Assignee
NCR Corp
National Cash Register Co
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 NCR Corp, National Cash Register Co filed Critical NCR Corp
Publication of GB910430A publication Critical patent/GB910430A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03G—CONTROL OF AMPLIFICATION
    • H03G11/00—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general
    • H03G11/02—Limiting amplitude; Limiting rate of change of amplitude ; Clipping in general by means of diodes
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H9/00—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection
    • H02H9/04—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage
    • H02H9/041—Emergency protective circuit arrangements for limiting excess current or voltage without disconnection responsive to excess voltage using a short-circuiting device

Abstract

910,430. Transistor circuits. NATIONAL CASH REGISTER CO. Jan. 26, 1961 [Feb. 25, 1960], No. 3037/61. Class 40 (6). [Also in Groups XXXV and XXXVII] In a system having a D.C. supply source 10 supplying a load 11 which may include transistors, overvoltage protection is effected by means of a transistor 20 or other controllableimpedance device connected in shunt with the load 11 and normally biased to non-conduction by a voltage derived from a resistor 19 and a Zener diode 18 or other constant potential device connected between supply conductor 24 and a source of biasing potential 17. When the voltage of the supply source 10 rises above a predetermined value, the resulting bias voltage applied to the base of the transistor 20 causes the transistor to conduct and provide a shunt path permitting increased current to flow causing the blowing of a fuse 12 or the opening of a circuit-breaker.
GB3037/61A 1960-02-25 1961-01-26 Electrical circuit protective arrangements Expired GB910430A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US1099260A 1960-02-25 1960-02-25

Publications (1)

Publication Number Publication Date
GB910430A true GB910430A (en) 1962-11-14

Family

ID=21748386

Family Applications (1)

Application Number Title Priority Date Filing Date
GB3037/61A Expired GB910430A (en) 1960-02-25 1961-01-26 Electrical circuit protective arrangements

Country Status (4)

Country Link
CH (1) CH380199A (en)
FR (1) FR1290873A (en)
GB (1) GB910430A (en)
NL (1) NL261262A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0173108A2 (en) * 1984-08-20 1986-03-05 Kabushiki Kaisha Toshiba Electrostatic discharge protection circuit with variable limiting threshold for MOS device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0173108A2 (en) * 1984-08-20 1986-03-05 Kabushiki Kaisha Toshiba Electrostatic discharge protection circuit with variable limiting threshold for MOS device
EP0173108A3 (en) * 1984-08-20 1987-07-22 Kabushiki Kaisha Toshiba Electrostatic discharge protection circuit with variableelectrostatic discharge protection circuit with variable limiting threshold for mos device limiting threshold for mos device

Also Published As

Publication number Publication date
FR1290873A (en) 1962-04-20
CH380199A (en) 1964-07-31
NL261262A (en) 1900-01-01

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