GB961349A - Improvements in control circuits - Google Patents

Improvements in control circuits

Info

Publication number
GB961349A
GB961349A GB445762A GB445762A GB961349A GB 961349 A GB961349 A GB 961349A GB 445762 A GB445762 A GB 445762A GB 445762 A GB445762 A GB 445762A GB 961349 A GB961349 A GB 961349A
Authority
GB
United Kingdom
Prior art keywords
voltage
transistor
feb
conductive
lines
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
GB445762A
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.)
Siemens and Halske AG
Siemens AG
Original Assignee
Siemens and Halske AG
Siemens AG
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 Siemens and Halske AG, Siemens AG filed Critical Siemens and Halske AG
Publication of GB961349A publication Critical patent/GB961349A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/24—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to undervoltage or no-voltage
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/20—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage
    • H02H3/202—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to excess voltage for dc systems
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/22—Modifications for ensuring a predetermined initial state when the supply voltage has been applied
    • H03K17/24—Storing the actual state when the supply voltage fails

Landscapes

  • Dc-Dc Converters (AREA)

Abstract

961,349. Protective arrangements. SIEMENS & HALSKE A.G. Feb. 6, 1962 [Feb. 10, 1961], No. 4457/62. Headings H2H and H2K. A circuit for disconnecting a load 6 from a supply St when the voltage is outside a determined range comprises a device VSt equipped preferably with Schmitt trigger circuits comparing the voltage at St with a reference source (not shown) which normally delivers a positive voltage at lines 3, 4. When the voltage is above or below the range, a negative potential appears at 3 or 4 rendering T4 conductive and after a time determined by timing pulses delivered to terminal 2, transistor T5 conductive also. A positive pulse is then applied through a capacitor C1 and diode D3 which turns bi-stably arranged transistor T3 off and T2 on, thus cutting off transistor T1. Relays AL may be provided for indicating the state of the bi-stable transistors T2, T3. When the voltage returns to normal a positive voltage on lines 8, 9 reverses the state of the bi-stable circuit.
GB445762A 1961-02-10 1962-02-06 Improvements in control circuits Expired GB961349A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DES72469A DE1139193B (en) 1961-02-10 1961-02-10 Circuit arrangement for switching off a power supply device

Publications (1)

Publication Number Publication Date
GB961349A true GB961349A (en) 1964-06-17

Family

ID=7503219

Family Applications (1)

Application Number Title Priority Date Filing Date
GB445762A Expired GB961349A (en) 1961-02-10 1962-02-06 Improvements in control circuits

Country Status (2)

Country Link
DE (1) DE1139193B (en)
GB (1) GB961349A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135840A (en) * 1983-02-28 1984-09-05 Westinghouse Electric Corp Electronic circuit breaker
GB2139436A (en) * 1983-03-17 1984-11-07 Janan Emmanuel Allos Mains protection device
GB2249229A (en) * 1990-10-09 1992-04-29 Christopher James Cook Mains overvoltage and undervoltage protection

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4603366A (en) * 1984-07-12 1986-07-29 Siemens Corporate Research & Support, Inc. High-speed voltage-sensitive circuit breaker

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL103572C (en) * 1956-10-12

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2135840A (en) * 1983-02-28 1984-09-05 Westinghouse Electric Corp Electronic circuit breaker
GB2139436A (en) * 1983-03-17 1984-11-07 Janan Emmanuel Allos Mains protection device
US4707760A (en) * 1983-03-17 1987-11-17 Sollatek Limited Mains protection device
GB2249229A (en) * 1990-10-09 1992-04-29 Christopher James Cook Mains overvoltage and undervoltage protection

Also Published As

Publication number Publication date
DE1139193B (en) 1962-11-08

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