JPH0376397U - - Google Patents
Info
- Publication number
- JPH0376397U JPH0376397U JP13704789U JP13704789U JPH0376397U JP H0376397 U JPH0376397 U JP H0376397U JP 13704789 U JP13704789 U JP 13704789U JP 13704789 U JP13704789 U JP 13704789U JP H0376397 U JPH0376397 U JP H0376397U
- Authority
- JP
- Japan
- Prior art keywords
- dimming
- power supply
- impedance element
- discharge lamp
- impedance
- 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
- 239000003990 capacitor Substances 0.000 claims description 2
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
Description
第１図は本考案の実施例の回路図、第２図は従
来例の回路図である。
ＣＨ１，ＣＨ２……チヨークコイル、ｌ……放
電灯、Ｒｙ１，Ｒｙ２……リレー、Ｓ１，Ｓ２…
…接点、ＴＲ……カレントトランス、Ｅ１……交
流電源、Ｃ２……始動時入力電流低減用コンデン
サである。
FIG. 1 is a circuit diagram of an embodiment of the present invention, and FIG. 2 is a circuit diagram of a conventional example. CH 1 , CH 2 ... Chi York coil, l ... Discharge lamp, Ry 1 , Ry 2 ... Relay, S 1 , S 2 ...
...Contact, TR...Current transformer, E1 ...AC power supply, C2 ...Capacitor for reducing input current at startup.
Claims (1)
、交流電源と放電灯との間に介在させた調光用イ
ンピーダンス素子と、この調光用インピーダンス
素子のインピーダンス値を変化させることにより
放電灯の点灯状態を全光、調光に切り換えるスイ
ツチ要素と、このスイツチ要素を介して前記調光
用インピーダンス素子の一部と並列に１次側を接
続したランプ電流検出用のカレントトランスと、
このカレントトランスの２次出力に応答して常開
接点を開閉させるリレーと、このリレーの常開接
点を介して上記交流電源に接続した始動時入力電
流低減用のコンデンサとを備えたことを特徴とす
る放電灯点灯回路。 An AC power supply, a discharge lamp connected to the AC power supply, a dimming impedance element interposed between the AC power supply and the discharge lamp, and a dimming impedance element that changes the impedance value of the dimming impedance element. a switch element for switching the lighting state between full light and dimming; a current transformer for lamp current detection whose primary side is connected in parallel with a part of the impedance element for dimming via this switch element;
It is characterized by comprising a relay that opens and closes a normally open contact in response to the secondary output of this current transformer, and a capacitor for reducing the input current at startup connected to the AC power supply via the normally open contact of this relay. Discharge lamp lighting circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13704789U JPH0376397U (en) | 1989-11-27 | 1989-11-27 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP13704789U JPH0376397U (en) | 1989-11-27 | 1989-11-27 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0376397U true JPH0376397U (en) | 1991-07-31 |
Family
ID=31684223
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP13704789U Pending JPH0376397U (en) | 1989-11-27 | 1989-11-27 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0376397U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006181403A (en) * | 2004-12-24 | 2006-07-13 | Hochiki Corp | Water spray head |
-
1989
- 1989-11-27 JP JP13704789U patent/JPH0376397U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006181403A (en) * | 2004-12-24 | 2006-07-13 | Hochiki Corp | Water spray head |