JPS5852798U - lighting circuit - Google Patents
lighting circuitInfo
- Publication number
- JPS5852798U JPS5852798U JP14155281U JP14155281U JPS5852798U JP S5852798 U JPS5852798 U JP S5852798U JP 14155281 U JP14155281 U JP 14155281U JP 14155281 U JP14155281 U JP 14155281U JP S5852798 U JPS5852798 U JP S5852798U
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- switching element
- lighting circuit
- discharge tube
- turns
- 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
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
第1図は従来の点灯管を使用した螢光放電管点灯回路を
示す回路図、第2図は本考案の一実施例を示す回路図で
ある。
図において、1・・・・・・商用交流電源、2・・・・
・・安定器、3・・・・・・螢光放電管、4・・・・・
・開閉器、5・・・・・・点灯管、6.’7.8・・・
・・・整流ダイオード、9,10・・・・・・トランジ
スタ、11・・・・・・PNPNスイッチ、12・・・
・・・コンデンサ、13,14.15.16・・・・・
・抵抗器である。FIG. 1 is a circuit diagram showing a fluorescent discharge tube lighting circuit using a conventional lighting tube, and FIG. 2 is a circuit diagram showing an embodiment of the present invention. In the figure, 1... commercial AC power supply, 2...
... Ballast, 3... Fluorescent discharge tube, 4...
・Switch, 5...Lighting tube, 6. '7.8...
... Rectifier diode, 9, 10 ... Transistor, 11 ... PNPN switch, 12 ...
...Capacitor, 13,14.15.16...
・It is a resistor.
Claims (1)
灯時のみターンオンして螢光放電管のフィラメントに電
流を流す一方向性スイッチング素子と、フィラメント電
流の最大値を電圧に変換し保持し、前記スイッチング素
子に逆電圧が印加される交流電源の極性において導通後
前記保持電圧により設定され〃電圧でターンオフする常
時オフのスイッチング部を並列接続したことを特徴とす
る点灯回路。A unidirectional switching element that turns on only when the fluorescent discharge tube connected to an AC power source through a ballast and is not lit, allowing current to flow through the filament of the fluorescent discharge tube, and a unidirectional switching element that converts the maximum value of the filament current into voltage and maintains it. A lighting circuit, characterized in that a normally-off switching section is connected in parallel, which turns off at a voltage that is set by the holding voltage after conduction at the polarity of an AC power supply to which a reverse voltage is applied to the switching element.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14155281U JPS5852798U (en) | 1981-09-24 | 1981-09-24 | lighting circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP14155281U JPS5852798U (en) | 1981-09-24 | 1981-09-24 | lighting circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5852798U true JPS5852798U (en) | 1983-04-09 |
Family
ID=29934648
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP14155281U Pending JPS5852798U (en) | 1981-09-24 | 1981-09-24 | lighting circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5852798U (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02120997U (en) * | 1989-03-16 | 1990-10-01 |
-
1981
- 1981-09-24 JP JP14155281U patent/JPS5852798U/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH02120997U (en) * | 1989-03-16 | 1990-10-01 |
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