GB1065333A - Improvements in or relating to electrical converter circuit arrangements - Google Patents
Improvements in or relating to electrical converter circuit arrangementsInfo
- Publication number
- GB1065333A GB1065333A GB40187/65A GB4018765A GB1065333A GB 1065333 A GB1065333 A GB 1065333A GB 40187/65 A GB40187/65 A GB 40187/65A GB 4018765 A GB4018765 A GB 4018765A GB 1065333 A GB1065333 A GB 1065333A
- Authority
- GB
- United Kingdom
- Prior art keywords
- capacitor
- transistor
- voltage
- resistors
- 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
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
- H02M7/44—Conversion of dc power input into ac power output without possibility of reversal by static converters
- H02M7/48—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/505—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/515—Conversion of dc power input into ac power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
- H02M7/516—Self-oscillating arrangements
-
- 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
- H05B41/26—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc
- H05B41/28—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters
- H05B41/282—Circuit arrangements in which the lamp is fed by power derived from dc by means of a converter, e.g. by high-voltage dc using static converters with semiconductor devices
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
- Ac-Ac Conversion (AREA)
- Inverter Devices (AREA)
Abstract
1,065,333. Transistor oscillator inverters. PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd. Sept. 21, 1965 [Sept. 23, 1964], No. 40187/65. Heading H3T. [Also in Division H2] An inverter supplying two or more discharge lamps 19, 20 comprises a thyristor 5 (or 13), an inductor 6 (or 14), and a circuit 8, 9 consisting of a capacitor and an inductor in parallel, connected in series across a D.C. source 1, 2. The circuit is oscillatory with less than critical damping and the ratio of the second inductance to the first is less than fifteen and preferably less than ten. The load is a number of independently switchable circuits each of which is capacitive at the operating frequency of the inverter, such as a capacitor and a fluorescent lamp in series. The apparent power of the capacitor is between 1À3 and 1À5 times that of the lamp. Part of coils 6 and 14 may be replaced by a coil between 1 and 12. Firing signals for the thyristors are taken from the secondaries of transformer 44 connected to the inverter output through capacitor 43 and inductors 42, 45. The transformer has a square loop ferrite coil which produces a pulse each time the oscillation passes through zero. Starting circuit.-When switched on the full supply voltage appears between points 4 and 27 and charges capacitor 28 through resistors 29, 30 and voltage divider 31, 32. The voltage of the emitter of transistor 33 becomes increasingly positive until it exceeds the base voltage determined by the resistors 34, 35. The transistor 33 conducts and capacitor 28 discharges through resistors 36, 37 until capacitor 39 becomes charged by the current through the base of the transistor and the secondary winding of transformer 38. A pulse voltage then appears across resistor 37 and fires the thyristor 13. Diodes 40, 41 then switch off the starting circuit.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL6411058A NL6411058A (en) | 1964-09-23 | 1964-09-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1065333A true GB1065333A (en) | 1967-04-12 |
Family
ID=19791082
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB40187/65A Expired GB1065333A (en) | 1964-09-23 | 1965-09-21 | Improvements in or relating to electrical converter circuit arrangements |
Country Status (7)
| Country | Link |
|---|---|
| AT (1) | AT253059B (en) |
| BE (1) | BE670039A (en) |
| CH (1) | CH450359A (en) |
| DE (1) | DE1489444A1 (en) |
| ES (1) | ES317650A1 (en) |
| GB (1) | GB1065333A (en) |
| NL (1) | NL6411058A (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CA2107987A1 (en) * | 1992-10-08 | 1994-04-09 | David R. Pacholok | Reduced tension modular neon sign system |
-
1964
- 1964-09-23 NL NL6411058A patent/NL6411058A/xx unknown
-
1965
- 1965-09-18 DE DE19651489444 patent/DE1489444A1/en active Pending
- 1965-09-20 CH CH1295865A patent/CH450359A/en unknown
- 1965-09-20 AT AT855265A patent/AT253059B/en active
- 1965-09-21 GB GB40187/65A patent/GB1065333A/en not_active Expired
- 1965-09-21 ES ES0317650A patent/ES317650A1/en not_active Expired
- 1965-09-23 BE BE670039D patent/BE670039A/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| BE670039A (en) | 1966-03-23 |
| NL6411058A (en) | 1966-03-24 |
| CH450359A (en) | 1968-01-31 |
| ES317650A1 (en) | 1966-04-01 |
| AT253059B (en) | 1967-03-28 |
| DE1489444A1 (en) | 1969-02-13 |
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