FR1575121A - - Google Patents
Info
- Publication number
- FR1575121A FR1575121A FR1575121DA FR1575121A FR 1575121 A FR1575121 A FR 1575121A FR 1575121D A FR1575121D A FR 1575121DA FR 1575121 A FR1575121 A FR 1575121A
- Authority
- FR
- France
- 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
-
- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03B—APPARATUS OR ARRANGEMENTS FOR TAKING PHOTOGRAPHS OR FOR PROJECTING OR VIEWING THEM; APPARATUS OR ARRANGEMENTS EMPLOYING ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ACCESSORIES THEREFOR
- G03B27/00—Photographic printing apparatus
- G03B27/02—Exposure apparatus for contact printing
- G03B27/14—Details
- G03B27/26—Cooling
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B41/00—Circuit arrangements or apparatus for igniting or operating discharge lamps
- H05B41/14—Circuit arrangements
- H05B41/16—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies
- H05B41/20—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch
- H05B41/23—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode
- H05B41/231—Circuit arrangements in which the lamp is fed by DC or by low-frequency AC, e.g. by 50 cycles/sec AC, or with network frequencies having no starting switch for lamps not having an auxiliary starting electrode for high-pressure lamps
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US65595667A | 1967-07-25 | 1967-07-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| FR1575121A true FR1575121A (cg-RX-API-DMAC7.html) | 1969-07-18 |
Family
ID=24631060
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR1575121D Expired FR1575121A (cg-RX-API-DMAC7.html) | 1967-07-25 | 1968-07-24 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US3470415A (cg-RX-API-DMAC7.html) |
| DE (1) | DE1764728A1 (cg-RX-API-DMAC7.html) |
| FR (1) | FR1575121A (cg-RX-API-DMAC7.html) |
| GB (1) | GB1227966A (cg-RX-API-DMAC7.html) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4870316A (en) * | 1987-04-16 | 1989-09-26 | Mitsubishi Denki Kabushiki Kaisha | Pulsed alkali metal vapor discharge lamp with ceramics outer envelope |
| CN1723742B (zh) * | 2002-12-11 | 2010-09-29 | 皇家飞利浦电子股份有限公司 | 照明单元 |
| CN116658450B (zh) * | 2023-07-26 | 2023-11-03 | 苏州浪潮智能科技有限公司 | 风扇控制系统、服务器系统、风扇控制方法及装置 |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2080908A (en) * | 1935-07-27 | 1937-05-18 | Gen Electric | Electric gaseous discharge device |
| GB538793A (en) * | 1940-01-12 | 1941-08-18 | Gen Electric Co Ltd | Improvements in combinations of a hpmv lamp with means for cooling it |
| US3359454A (en) * | 1966-04-22 | 1967-12-19 | Nuarc Company | Lamp control system for automatically controlling the cooling blower |
-
1967
- 1967-07-25 US US655956A patent/US3470415A/en not_active Expired - Lifetime
-
1968
- 1968-07-22 GB GB1227966D patent/GB1227966A/en not_active Expired
- 1968-07-24 FR FR1575121D patent/FR1575121A/fr not_active Expired
- 1968-07-25 DE DE19681764728 patent/DE1764728A1/de active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| GB1227966A (cg-RX-API-DMAC7.html) | 1971-04-15 |
| US3470415A (en) | 1969-09-30 |
| DE1764728A1 (de) | 1971-10-14 |
Similar Documents
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| ST | Notification of lapse |