GB2139830B - Power supply for use in inflammable atmospheres - Google Patents
Power supply for use in inflammable atmospheresInfo
- Publication number
- GB2139830B GB2139830B GB08410465A GB8410465A GB2139830B GB 2139830 B GB2139830 B GB 2139830B GB 08410465 A GB08410465 A GB 08410465A GB 8410465 A GB8410465 A GB 8410465A GB 2139830 B GB2139830 B GB 2139830B
- Authority
- GB
- United Kingdom
- Prior art keywords
- power supply
- inflammable
- atmospheres
- inflammable atmospheres
- supply
- 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
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
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08410465A GB2139830B (en) | 1983-04-26 | 1984-04-24 | Power supply for use in inflammable atmospheres |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB838311298A GB8311298D0 (en) | 1983-04-26 | 1983-04-26 | Power supply apparatus |
GB08410465A GB2139830B (en) | 1983-04-26 | 1984-04-24 | Power supply for use in inflammable atmospheres |
Publications (3)
Publication Number | Publication Date |
---|---|
GB8410465D0 GB8410465D0 (en) | 1984-05-31 |
GB2139830A GB2139830A (en) | 1984-11-14 |
GB2139830B true GB2139830B (en) | 1987-01-07 |
Family
ID=26285946
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB08410465A Expired GB2139830B (en) | 1983-04-26 | 1984-04-24 | Power supply for use in inflammable atmospheres |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB2139830B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3906621C2 (en) * | 1989-03-02 | 1995-05-04 | Hemscheidt Maschf Hermann | Intrinsically safe power supply unit |
DE4033313A1 (en) * | 1989-10-19 | 1991-06-13 | Drexelbrook Controls | Intrinsic security system |
US6925419B2 (en) * | 2003-05-16 | 2005-08-02 | Fisher-Rosemount Systems, Inc. | Intrinsically safe field maintenance tool with removable battery pack |
CA2637954C (en) * | 2006-01-24 | 2013-03-26 | Fisher Controls International Llc | Flameproof apparatus using non-grounded energy-limiting barrier |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1329417A (en) * | 1971-06-24 | 1973-09-05 | Winster Products Ltd | Power supply arrangements in electrical installations |
GB1441808A (en) * | 1973-07-31 | 1976-07-07 | Coal Industry Patents Ltd | Intrinsically safe power supply apparatus |
DE2724176B2 (en) * | 1977-05-27 | 1979-06-13 | Siemens Ag, 1000 Berlin Und 8000 Muenchen | DC power system |
DE2740160A1 (en) * | 1977-09-02 | 1979-03-08 | Auergesellschaft Gmbh | POWER SUPPLY FOR MEASURING DEVICES |
GB2094572B (en) * | 1981-03-07 | 1985-02-13 | Southall Geoffrey Richard | Supply of power to intrinsically safe devices in hazardous areas |
DE3117642C2 (en) * | 1981-05-05 | 1985-11-21 | Bergwerksverband Gmbh, 4300 Essen | Coupling device |
-
1984
- 1984-04-24 GB GB08410465A patent/GB2139830B/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
GB2139830A (en) | 1984-11-14 |
GB8410465D0 (en) | 1984-05-31 |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PCNP | Patent ceased through non-payment of renewal fee |
Effective date: 19950424 |