JPS62153797U - - Google Patents
Info
- Publication number
- JPS62153797U JPS62153797U JP4210686U JP4210686U JPS62153797U JP S62153797 U JPS62153797 U JP S62153797U JP 4210686 U JP4210686 U JP 4210686U JP 4210686 U JP4210686 U JP 4210686U JP S62153797 U JPS62153797 U JP S62153797U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- circuit
- discharge lamp
- lighting device
- lamp lighting
- 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 3
- 230000015572 biosynthetic process Effects 0.000 description 1
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
Description
第１図は本考案の一実施例を示す回路図、第２
図は時間（経時変化）に対する放電灯の両端電圧
の特性図、第３図は一方の電極がエミツタレス状
態の電圧波形図である。
１……交流源、２……限流素子、３……放電灯
、４……グローランプ、１１……電圧検出回路、
１２……整流回路、１３……比較回路、１４，１
５……スイツチ、１６……開閉器、１７……直流
電源形成回路、Ｖｓ……基準電源。
Figure 1 is a circuit diagram showing one embodiment of the present invention;
The figure is a characteristic diagram of the voltage across the discharge lamp with respect to time (change over time), and FIG. 3 is a voltage waveform diagram when one electrode is in an emitterless state. DESCRIPTION OF SYMBOLS 1... AC source, 2... Current limiting element, 3... Discharge lamp, 4... Glow lamp, 11... Voltage detection circuit,
12... Rectifier circuit, 13... Comparison circuit, 14,1
5...Switch, 16...Switch, 17...DC power supply formation circuit, Vs ...Reference power supply.
Claims (1)
、放電灯の両端電圧を検出する電圧検出回路と、
該電圧検出回路の電圧を整流する整流回路と、基
準電圧を発生する基準電源と、該基準電源からの
基準電圧と前記整流回路からの出力電圧とを比較
する比較回路と、該比較回路からの出力電圧が基
準電圧以上になつたとき放電灯点灯装置の動作を
停止させるリレー回路とを備えたことを特徴とす
る放電灯点灯装置の保護回路。 In a discharge lamp lighting device lit by an alternating current source, a voltage detection circuit detects a voltage across the discharge lamp;
a rectifier circuit that rectifies the voltage of the voltage detection circuit; a reference power source that generates a reference voltage; a comparison circuit that compares the reference voltage from the reference power source with the output voltage from the rectifier circuit; A protection circuit for a discharge lamp lighting device, comprising a relay circuit that stops the operation of the discharge lamp lighting device when the output voltage exceeds a reference voltage.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4210686U JPS62153797U (en) | 1986-03-22 | 1986-03-22 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4210686U JPS62153797U (en) | 1986-03-22 | 1986-03-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS62153797U true JPS62153797U (en) | 1987-09-29 |
Family
ID=30857710
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4210686U Pending JPS62153797U (en) | 1986-03-22 | 1986-03-22 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS62153797U (en) |
-
1986
- 1986-03-22 JP JP4210686U patent/JPS62153797U/ja active Pending
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