JPS5477477A - Discharge lamp lighting apparatus - Google Patents
Discharge lamp lighting apparatusInfo
- Publication number
- JPS5477477A JPS5477477A JP14537677A JP14537677A JPS5477477A JP S5477477 A JPS5477477 A JP S5477477A JP 14537677 A JP14537677 A JP 14537677A JP 14537677 A JP14537677 A JP 14537677A JP S5477477 A JPS5477477 A JP S5477477A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- capacitor
- control terminal
- charging
- electricity
- 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 provide a discharge lamp lighting apparatus, in which quantity of electricity in main circuit is detected from the voltage across a capacitor, whereby it is enabled to compensate deviation of the quantity of electricity in the main circuit, with no need of providing a smoothing capacitor.
CONSTITUTION: Charging of capacitor 10 is effected when switching element 5 is in its OFF-position. Here, charging current of capacitor 3 is of square wave. Voltage at the control terminal G of trigger element 6 is a partial voltage of capacitor 10 developed across resistance 16 plus a value proportional to the voltage of capacitor 3. For instance, when charging voltage of capacitor 3 is raised, voltage at the control terminal G is lowered. As the result, the time when difference between anode voltage and that of the control terminal G reaches 0.7 V is advanced, so that charging voltage of capacitor 3 is lowered. On the other hand, when voltage of capacitor 3 is lowering, voltage at the control terminal G is raised to compensate deviation in quantity of electricity in the main circuit.
COPYRIGHT: (C)1979,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14537677A JPS5477477A (en) | 1977-11-30 | 1977-11-30 | Discharge lamp lighting apparatus |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14537677A JPS5477477A (en) | 1977-11-30 | 1977-11-30 | Discharge lamp lighting apparatus |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5477477A true JPS5477477A (en) | 1979-06-20 |
Family
ID=15383791
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14537677A Pending JPS5477477A (en) | 1977-11-30 | 1977-11-30 | Discharge lamp lighting apparatus |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5477477A (en) |
-
1977
- 1977-11-30 JP JP14537677A patent/JPS5477477A/en active Pending
Similar Documents
Publication | Publication Date | Title |
---|---|---|
ES8102764A1 (en) | Adjustable DC pulse circuit for variation over a predetermined range using two timer networks | |
JPS5477477A (en) | Discharge lamp lighting apparatus | |
JPS5517280A (en) | Excitation circuit for synchronous generator | |
JPS5478028A (en) | Position detector | |
JPS545263A (en) | Control circuit for dryer | |
JPS52100143A (en) | Insufficient voltage detector | |
JPS5398050A (en) | Power supply | |
JPS5411426A (en) | Constant power controller for a/d converter | |
JPS5393334A (en) | Power source filter circuit | |
JPS5383052A (en) | Zero-cross swtching circuit | |
JPS5425444A (en) | Protective circuit | |
JPS5291573A (en) | Discharge lamp lighting apparatus | |
JPS5395562A (en) | Switch | |
JPS5276660A (en) | Lighting discharger | |
JPS54189A (en) | Temperature controller | |
JPS5422553A (en) | Constant voltage circuit | |
JPS53103138A (en) | Thyristor fault detector | |
JPS5340849A (en) | Switching circuit for ac load | |
JPS5284439A (en) | Ac load broken line detector | |
JPS5371337A (en) | Arc furnace controlling device | |
JPS5238145A (en) | Continous variable type direct current constant voltage power supply | |
JPS5334149A (en) | Dc glow discharge device | |
JPS54160985A (en) | Temperature controller of positive resistance temperature coefficient heating unit | |
JPS52126747A (en) | Phase control circuit | |
JPS5523549A (en) | Electric device |