JPS62107400U - - Google Patents
Info
- Publication number
- JPS62107400U JPS62107400U JP20194085U JP20194085U JPS62107400U JP S62107400 U JPS62107400 U JP S62107400U JP 20194085 U JP20194085 U JP 20194085U JP 20194085 U JP20194085 U JP 20194085U JP S62107400 U JPS62107400 U JP S62107400U
- Authority
- JP
- Japan
- Prior art keywords
- converter
- discharge lamp
- pressure discharge
- output
- voltage
- 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 description 3
- 238000010586 diagram Methods 0.000 description 4
Landscapes
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Description
第１図は本考案高圧放電灯の調光装置の実施例
を示す回路図、第２図は同ブロツク図、第３図は
同実施例の動作を示す特性図、第４図は交流電源
を使用した場合のブロツク図である。
２：ＤＣ―ＤＣコンバータ、３：電流検出回路
、４：高圧放電灯、５：制御用電源、６：電圧比
較回路、７：直流電源、ＶＲ：基準電圧調整用可
変抵抗、Ｒ：電流検出用抵抗、ＦＫ：フオトカプ
ラー。
Fig. 1 is a circuit diagram showing an embodiment of the high pressure discharge lamp dimmer of the present invention, Fig. 2 is a block diagram of the same, Fig. 3 is a characteristic diagram showing the operation of the embodiment, and Fig. 4 is an AC power source. It is a block diagram when used. 2: DC-DC converter, 3: Current detection circuit, 4: High pressure discharge lamp, 5: Control power supply, 6: Voltage comparison circuit, 7: DC power supply, VR: Variable resistor for adjusting reference voltage, R: For current detection Resistance, FK: Photocoupler.
Claims (1)
て変えることのできるＤＣ―ＤＣコンバータを備
え、同コンバータの出力電圧を電流検出用抵抗を
介して高圧放電灯に印加し、同抵抗に発生する電
圧と調整できる基準電圧とを比較してその差の出
力により前記コンバータの電流制御用外部信号を
発生させ、基準電圧の調整によつて高圧放電灯に
流す電流を変えることによつて調光を行なうこと
を特徴とする高圧放電灯の調光装置。 Equipped with a DC-DC converter that can step up the DC power supply and change the output current value using an external signal, the output voltage of the converter is applied to the high-pressure discharge lamp via a current detection resistor, and the output voltage is generated across the resistor. The voltage is compared with an adjustable reference voltage, the output of the difference is used to generate an external signal for controlling the current of the converter, and dimming is achieved by changing the current flowing through the high-pressure discharge lamp by adjusting the reference voltage. A dimmer device for a high pressure discharge lamp, which is characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20194085U JPS62107400U (en) | 1985-12-26 | 1985-12-26 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20194085U JPS62107400U (en) | 1985-12-26 | 1985-12-26 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62107400U true JPS62107400U (en) | 1987-07-09 |
Family
ID=31165865
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20194085U Pending JPS62107400U (en) | 1985-12-26 | 1985-12-26 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62107400U (en) |
-
1985
- 1985-12-26 JP JP20194085U patent/JPS62107400U/ja active Pending
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