GB1387379A - Circuit arrangement for limiting the voltage fed to a load - Google Patents

Circuit arrangement for limiting the voltage fed to a load

Info

Publication number
GB1387379A
GB1387379A GB1308573A GB1308573A GB1387379A GB 1387379 A GB1387379 A GB 1387379A GB 1308573 A GB1308573 A GB 1308573A GB 1308573 A GB1308573 A GB 1308573A GB 1387379 A GB1387379 A GB 1387379A
Authority
GB
United Kingdom
Prior art keywords
common point
limiting
diode
load
voltage fed
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
GB1308573A
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.)
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
Original Assignee
BBC Brown Boveri AG Switzerland
BBC Brown Boveri France SA
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 BBC Brown Boveri AG Switzerland, BBC Brown Boveri France SA filed Critical BBC Brown Boveri AG Switzerland
Publication of GB1387379A publication Critical patent/GB1387379A/en
Expired legal-status Critical Current

Links

Classifications

    • 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
    • H02H9/008—Intrinsically safe circuits

Landscapes

  • Emergency Protection Circuit Devices (AREA)

Abstract

1387379 Limiters BROWN BOVERI & CIE AG 19 March 1973 [18 March 1972] 13085/73 Heading H3T [Also in Division H2] In an intrisically safe circuit 14 for limiting the voltage fed to a load in an explosive environment four diodes 16-19 are connected in ring formation, two, 17, 19, being connected together by their anodes and the other two, 16, 18, by their cathodes; A Zener diode 13 is connected at its cathode to the common point 27 of the diode cathodes and at its anode to the common point 28 of the diode anodes, while the output is taken from the opposite points 22, 23 on the diode ring. In the embodiment, the input is applied at terminal 10 and reaches common point 22 via a fuse or circuit breaker 21, and output terminal 25 is fed via series resistors 12, 24, a second limiting circuit 20 being connected to the common point of the resistors.
GB1308573A 1972-03-18 1973-03-19 Circuit arrangement for limiting the voltage fed to a load Expired GB1387379A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE19722213243 DE2213243B2 (en) 1972-03-18 1972-03-18 Circuit arrangement for voltage limitation

Publications (1)

Publication Number Publication Date
GB1387379A true GB1387379A (en) 1975-03-19

Family

ID=5839358

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1308573A Expired GB1387379A (en) 1972-03-18 1973-03-19 Circuit arrangement for limiting the voltage fed to a load

Country Status (2)

Country Link
DE (1) DE2213243B2 (en)
GB (1) GB1387379A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4246621A (en) * 1977-07-15 1981-01-20 Yuken Kogyo Company Limited Energizing circuit for solenoid valve
US4389695A (en) * 1981-02-09 1983-06-21 Carpenter Jr Roy B Equipment for protecting electronic equipment and personnel against inadvertent occurrence of extended or transient high voltages and method

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB8722680D0 (en) * 1987-09-26 1987-11-04 Measurement Tech Ltd Electrical safety barriers
CA1307315C (en) * 1988-12-08 1992-09-08 Francis Yun-Tai Hung Telephone protection circuit

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4246621A (en) * 1977-07-15 1981-01-20 Yuken Kogyo Company Limited Energizing circuit for solenoid valve
US4389695A (en) * 1981-02-09 1983-06-21 Carpenter Jr Roy B Equipment for protecting electronic equipment and personnel against inadvertent occurrence of extended or transient high voltages and method

Also Published As

Publication number Publication date
DE2213243A1 (en) 1973-09-20
DE2213243B2 (en) 1978-03-09

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Legal Events

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