JPH0454199U - - Google Patents
Info
- Publication number
- JPH0454199U JPH0454199U JP9688490U JP9688490U JPH0454199U JP H0454199 U JPH0454199 U JP H0454199U JP 9688490 U JP9688490 U JP 9688490U JP 9688490 U JP9688490 U JP 9688490U JP H0454199 U JPH0454199 U JP H0454199U
- Authority
- JP
- Japan
- Prior art keywords
- pressure discharge
- discharge lamp
- power supply
- detection means
- supply circuit
- 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
- 238000001514 detection method Methods 0.000 claims 3
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
第１図は本考案の第１の実施例、第２図は第１
の実施例における制御方法のフローチヤートを示
す。
１……第１スイツチ、２……チヨツパー回路、
３……駆動回路、４……高圧発生回路、５……ラ
ンプ、６……第２スイツチ、７……フオトセンサ
、８……制御回路。
Figure 1 shows the first embodiment of the present invention, Figure 2 shows the first embodiment of the invention.
2 shows a flowchart of a control method in an embodiment of the present invention. 1...first switch, 2...chopper circuit,
3... Drive circuit, 4... High voltage generation circuit, 5... Lamp, 6... Second switch, 7... Photo sensor, 8... Control circuit.
Claims (1)
圧放電灯の電源回路において、高圧放電灯の点灯
の有無を検出する検出手段と、該検出手段の検出
出力により、高圧放電灯用電源のＯＮ／ＯＦＦを
制御する制御回路を設けたことを特徴とする高圧
放電灯の電源回路。 In a power supply circuit for a high-pressure discharge lamp used in an LCD projection television, etc., there is a detection means for detecting whether or not the high-pressure discharge lamp is lit, and the detection output of the detection means is used to turn on/off the power supply for the high-pressure discharge lamp. A power supply circuit for a high pressure discharge lamp, characterized in that it is provided with a control circuit for controlling the lamp.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9688490U JPH0454199U (en) | 1990-09-14 | 1990-09-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9688490U JPH0454199U (en) | 1990-09-14 | 1990-09-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0454199U true JPH0454199U (en) | 1992-05-08 |
Family
ID=31836782
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9688490U Pending JPH0454199U (en) | 1990-09-14 | 1990-09-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0454199U (en) |
-
1990
- 1990-09-14 JP JP9688490U patent/JPH0454199U/ja active Pending