JPS5452877A - Constant current supply device in the series lighting equipment - Google Patents
Constant current supply device in the series lighting equipmentInfo
- Publication number
- JPS5452877A JPS5452877A JP11973677A JP11973677A JPS5452877A JP S5452877 A JPS5452877 A JP S5452877A JP 11973677 A JP11973677 A JP 11973677A JP 11973677 A JP11973677 A JP 11973677A JP S5452877 A JPS5452877 A JP S5452877A
- Authority
- JP
- Japan
- Prior art keywords
- constant current
- current supply
- secondary side
- series
- main 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.)
- Pending
Links
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Abstract
PURPOSE:To lower the lamp firing potential by connecting in series the primary side of a plurality of insulating transformers of which the secondary side is connected with sodium lamps, and thereby supplying a constant current from a specific constant current supply to the primary side. CONSTITUTION:Constant current supply 1 is connected to input supplies 10, 10 via the primary winding of the main transformer. The primary side of insulating transformers Z1, Z2...Zn is connected in series to the secondary side of the main transformer. Lamps L1, L2,... , Ln are connected with the secondary side of each insulating transformer. Resistor R is connected in parallel with thyristors SCR1, SCR2, which are connected in inverse-parallel in the constant current supply. Even when the thyristors are off, since the secondary side of main transformer Tr produces a voltage output component as a current flows in resistor R, a current also flows in the sodium lamps during that time, and the electrode temperature is maintained sufficiently high, so that the firing potential can be lowered.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11973677A JPS5452877A (en) | 1977-10-05 | 1977-10-05 | Constant current supply device in the series lighting equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP11973677A JPS5452877A (en) | 1977-10-05 | 1977-10-05 | Constant current supply device in the series lighting equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5452877A true JPS5452877A (en) | 1979-04-25 |
Family
ID=14768847
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP11973677A Pending JPS5452877A (en) | 1977-10-05 | 1977-10-05 | Constant current supply device in the series lighting equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5452877A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57501007A (en) * | 1980-06-10 | 1982-06-03 | ||
| JPH0393193A (en) * | 1989-09-05 | 1991-04-18 | U R D:Kk | Lighting circuit for discharge tube |
-
1977
- 1977-10-05 JP JP11973677A patent/JPS5452877A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS57501007A (en) * | 1980-06-10 | 1982-06-03 | ||
| JPH0393193A (en) * | 1989-09-05 | 1991-04-18 | U R D:Kk | Lighting circuit for discharge tube |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2061034B (en) | Power supply systems | |
| KR850000168A (en) | Power supply for lighting high-brightness incandescent lamps | |
| ES273264A1 (en) | Ballast apparatus and system for dimming arc discharge lamps | |
| JPS5452877A (en) | Constant current supply device in the series lighting equipment | |
| ES356518A1 (en) | Circuit arrangement for igniting and supplying a gas and/or vapour-discharge lamp | |
| GB1189066A (en) | Arc Discharge Lamp Operating Circuit | |
| GB897828A (en) | A fluorescent lamp operating circuit | |
| ES2116650T3 (en) | APPARATUS FOR REGULATING THE VOLTAGE OF THE ELECTRICAL NETWORK OF FLUORESCENT LAMPS. | |
| ES413052A1 (en) | AN ATTENUATOR CIRCUIT DEVICE IN COMBINATION WITH A HIGH INTENSITY GAS DISCHARGE LAMP. | |
| ES457959A1 (en) | Device for producing pulses for the ignition and stabilization of an electric-arc process | |
| DE3267572D1 (en) | Device for starting fluorescent lamps | |
| GB848548A (en) | Starting circuit for electric discharge lamps | |
| GB739045A (en) | Improvements in dimming circuits for electric discharge lamps | |
| JPS5477343A (en) | Glow discharge heating apparatus | |
| GB767987A (en) | Improvements relating to supply circuits for electric discharge lamps | |
| GB680362A (en) | Improvements relating to the operation of electric discharge lamps | |
| JPS5696451A (en) | Discharge lamp | |
| PT87718A (en) | Hypodermic needle destructor - has transformer supplying low-voltage high-intensity current to pair of electrodes | |
| GB856773A (en) | Improvements in and relating to gaseous discharge lamp circuits | |
| JPS54109268A (en) | Discharge lamp lighting apparatus | |
| ES336671A1 (en) | Improvements in or relating to High-Frequency Generators for Supplying Discharge Tubes. | |
| GB682716A (en) | Means for controlling the candle-power of luminous electric discharge tubes | |
| GB793042A (en) | Improvements in or relating to electric circuit arrangements for operating from an alternating current supply one or more electric discharge lamps | |
| JPS54156363A (en) | Discharge lamp lighting apparatus | |
| GB800532A (en) | Improvements in or relating to electric circuit arrangements for operating low pressure electric discharge lamps and incorporating starting means for the lamps |