JPS5421536B2 - - Google Patents
Info
- Publication number
- JPS5421536B2 JPS5421536B2 JP8967972A JP8967972A JPS5421536B2 JP S5421536 B2 JPS5421536 B2 JP S5421536B2 JP 8967972 A JP8967972 A JP 8967972A JP 8967972 A JP8967972 A JP 8967972A JP S5421536 B2 JPS5421536 B2 JP S5421536B2
- Authority
- JP
- Japan
- 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
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)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US17935571A | 1971-09-10 | 1971-09-10 |
Publications (2)
Publication Number | Publication Date |
---|---|
JPS4836645A JPS4836645A (ja) | 1973-05-30 |
JPS5421536B2 true JPS5421536B2 (ja) | 1979-07-31 |
Family
ID=22656238
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8967972A Expired JPS5421536B2 (ja) | 1971-09-10 | 1972-09-08 |
Country Status (8)
Country | Link |
---|---|
US (1) | US3684924A (ja) |
JP (1) | JPS5421536B2 (ja) |
AU (1) | AU466694B2 (ja) |
BE (1) | BE788539A (ja) |
CA (1) | CA1000356A (ja) |
FR (1) | FR2152786B1 (ja) |
GB (1) | GB1381035A (ja) |
IT (1) | IT967304B (ja) |
Families Citing this family (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3818273A (en) * | 1971-03-26 | 1974-06-18 | Yokogawa Electric Works Ltd | Barrier isolator device employing an overload protection circuit |
US4016480A (en) * | 1974-03-04 | 1977-04-05 | Zenith Radio Corporation | Dual function coupling system and method |
US4034281A (en) * | 1974-07-25 | 1977-07-05 | Sanken Electric Company Limited | Direct current power supply with a transistor chopper |
US3973170A (en) * | 1974-09-09 | 1976-08-03 | Honeywell Inc. | Intrinsic safety barrier |
DE2457664C2 (de) * | 1974-12-06 | 1985-04-04 | Robert Bosch Gmbh, 7000 Stuttgart | Elektrische Schaltungsanordnung zur Erzeugung einer stabilen Ausgangsspannung |
US4004223A (en) * | 1975-06-16 | 1977-01-18 | Cohen Samuel G | Audible resistance or voltage tester |
FR2382810A1 (fr) * | 1977-03-02 | 1978-09-29 | Labo Cent Telecommunicat | Circuit d'alimentation de ligne telephonique avec protection |
US4190822A (en) * | 1978-04-05 | 1980-02-26 | Honeywell Inc. | Current telemetering interface apparatus |
JPS5581603A (en) * | 1978-12-13 | 1980-06-19 | Yoshida Kogyo Kk | Box body attaching apparatus for slide fastener |
GB2145858A (en) * | 1983-08-27 | 1985-04-03 | Hunslett | Monitoring system |
GB8712865D0 (en) * | 1987-06-02 | 1987-07-08 | Measurement Tech Ltd | Safety barriers |
GB8722679D0 (en) * | 1987-09-26 | 1987-11-04 | Measurement Tech Ltd | Electrical safety barriers |
GB2245439B (en) * | 1987-09-26 | 1992-04-29 | Measurement Tech Ltd | Electrical safety barriers |
US4954923A (en) * | 1988-08-19 | 1990-09-04 | Cooper Industries, Inc. | Intrinsic safety module interface |
US5144517A (en) * | 1989-10-20 | 1992-09-01 | Pepperl + Fuchs, Inc. | Intrinsically safe barrier device |
JP2504586B2 (ja) * | 1989-10-31 | 1996-06-05 | 東芝マイクロエレクトロニクス株式会社 | 接地外れ保護回路を有する電子回路装置 |
US5010292A (en) * | 1989-12-12 | 1991-04-23 | North American Philips Corporation | Voltage regulator with reduced semiconductor power dissipation |
US5993623A (en) * | 1996-09-24 | 1999-11-30 | Rosemount Analytical Inc. | Solid electrolyte gas analyzer with improved circuit and housing configuration |
DE10249599B4 (de) * | 2002-10-24 | 2007-12-27 | Knorr-Bremse Systeme für Nutzfahrzeuge GmbH | Sicherheitsschaltung für analoge Sensoren |
US20050190513A1 (en) * | 2004-03-01 | 2005-09-01 | Omron Corporation | Surge suppression circuit |
US7855865B2 (en) * | 2007-10-16 | 2010-12-21 | Nokia Corporation | Circuitry protection arrangement |
GB201007688D0 (en) * | 2010-05-10 | 2010-06-23 | Kitchener Renato | Variable biased active IEC61168-2 fieldbus power conditioner |
US9343899B2 (en) | 2013-10-03 | 2016-05-17 | Fisher Controls International Llc | Intrinsically safe voltage limiting shunt regulator circuit |
CN104682334B (zh) * | 2013-12-03 | 2018-09-28 | 深圳市海洋王照明工程有限公司 | 一种安全栅电路及灯具 |
CN103916012B (zh) * | 2014-04-01 | 2016-09-28 | 江苏杰瑞科技集团有限责任公司 | 一种本质安全电源转换装置 |
US10749426B1 (en) | 2019-04-11 | 2020-08-18 | Graco Minnesota Inc. | Trapezoidal power-supply barrier between hazardous and normal locations |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3527985A (en) * | 1966-12-02 | 1970-09-08 | Foxboro Co | Electrical barrier device |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3309542A (en) * | 1963-10-31 | 1967-03-14 | Cutler Hammer Inc | Intrinsically safe switching systems |
US3431486A (en) * | 1966-10-28 | 1969-03-04 | Motorola Inc | Protection circuit including power dissipation limiting means |
US3445679A (en) * | 1966-12-15 | 1969-05-20 | Square D Co | Intrinsically safe electrical control system |
US3571608A (en) * | 1969-04-04 | 1971-03-23 | Honeywell Inc | Protective circuit |
US3631264A (en) * | 1970-02-11 | 1971-12-28 | Sybron Corp | Intrinsically safe electrical barrier system and improvements therein |
US3581152A (en) * | 1970-03-16 | 1971-05-25 | Lloyd F Hunt | Round protection and detecting for high voltage dc transmission system |
-
0
- BE BE788539D patent/BE788539A/xx not_active IP Right Cessation
-
1971
- 1971-09-10 US US179355A patent/US3684924A/en not_active Expired - Lifetime
-
1972
- 1972-08-16 AU AU45631/72A patent/AU466694B2/en not_active Expired
- 1972-08-23 CA CA150,078A patent/CA1000356A/en not_active Expired
- 1972-08-25 GB GB3978372A patent/GB1381035A/en not_active Expired
- 1972-09-08 FR FR7231939A patent/FR2152786B1/fr not_active Expired
- 1972-09-08 JP JP8967972A patent/JPS5421536B2/ja not_active Expired
- 1972-09-09 IT IT29003/72A patent/IT967304B/it active
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3527985A (en) * | 1966-12-02 | 1970-09-08 | Foxboro Co | Electrical barrier device |
Also Published As
Publication number | Publication date |
---|---|
JPS4836645A (ja) | 1973-05-30 |
AU4563172A (en) | 1974-02-21 |
FR2152786A1 (ja) | 1973-04-27 |
AU466694B2 (en) | 1975-11-06 |
GB1381035A (en) | 1975-01-22 |
FR2152786B1 (ja) | 1977-03-04 |
IT967304B (it) | 1974-02-28 |
CA1000356A (en) | 1976-11-23 |
US3684924A (en) | 1972-08-15 |
BE788539A (fr) | 1973-03-08 |