GB827726A - Improvements in or relating to fluorescent lighting installations - Google Patents
Improvements in or relating to fluorescent lighting installationsInfo
- Publication number
- GB827726A GB827726A GB152456A GB152456A GB827726A GB 827726 A GB827726 A GB 827726A GB 152456 A GB152456 A GB 152456A GB 152456 A GB152456 A GB 152456A GB 827726 A GB827726 A GB 827726A
- Authority
- GB
- United Kingdom
- Prior art keywords
- discharge
- windings
- shims
- winding
- transformer
- 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
- 238000009434 installation Methods 0.000 title 1
- 238000004804 winding Methods 0.000 abstract 7
- 230000004907 flux Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 abstract 1
- 230000001360 synchronised effect Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of AC power input into DC power output; Conversion of DC power input into AC power output
- H02M7/42—Conversion of DC power input into AC power output without possibility of reversal
- H02M7/54—Conversion of DC power input into AC power output without possibility of reversal by dynamic converters
- H02M7/58—Conversion of DC power input into AC power output without possibility of reversal by dynamic converters using mechanical contact-making and -breaking parts to interrupt a single potential
- H02M7/62—Conversion of DC power input into AC power output without possibility of reversal by dynamic converters using mechanical contact-making and -breaking parts to interrupt a single potential with electromagnetically-operated vibrating contacts, e.g. chopper
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
827,726. Supply systems for discharge lamps. PLESSEY CO. Ltd. Dec. 28, 1956 [Jan. 17, 1956], No. 1524/56. Class 38 (4). In a circuit wherein a hot cathode discharge lamp 14 is supplied from a D.C. vibrator unit, the output transformer is arranged to supply both heating and discharge currents, also to have a high leakage reactance to dispense with the normal series choke. In the Figure a non- synchronous vibrator 2-5 fed from battery 1 is connected to a centre-tapped transformer winding 6, 7. To reduce the size of buffer condenser C3, it is fed at higher voltage from autotransformer winding 17. The secondary winding 9-11 comprises parts 10, 11 feeding heaters 12, 13, and the discharge current. The primary and secondary windings are wound on different parts of a three-limbed core 18 with magnetic shims 18d separating the two windings so that on starting, very little flux is carried by the shims, but on discharge commencing the magnetic leakage lowers the voltage across windings 9-11. In an alternative arrangement the primary and secondary windings are on different limbs of the transformer and an additional limb with an air gap is provided in place of the magnetic shims 18d.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB152456A GB827726A (en) | 1956-01-17 | 1956-01-17 | Improvements in or relating to fluorescent lighting installations |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB152456A GB827726A (en) | 1956-01-17 | 1956-01-17 | Improvements in or relating to fluorescent lighting installations |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB827726A true GB827726A (en) | 1960-02-10 |
Family
ID=9723473
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB152456A Expired GB827726A (en) | 1956-01-17 | 1956-01-17 | Improvements in or relating to fluorescent lighting installations |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB827726A (en) |
-
1956
- 1956-01-17 GB GB152456A patent/GB827726A/en not_active Expired
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