JPH0177300U - - Google Patents
Info
- Publication number
- JPH0177300U JPH0177300U JP1987174079U JP17407987U JPH0177300U JP H0177300 U JPH0177300 U JP H0177300U JP 1987174079 U JP1987174079 U JP 1987174079U JP 17407987 U JP17407987 U JP 17407987U JP H0177300 U JPH0177300 U JP H0177300U
- Authority
- JP
- Japan
- Prior art keywords
- output voltage
- circuit
- power supply
- fluorescent lamp
- inverter power
- 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
- 230000003213 activating effect Effects 0.000 claims 1
- 238000001514 detection method Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
- 239000003990 capacitor Substances 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Discharge-Lamp Control Circuits And Pulse- Feed Circuits (AREA)
- Circuit Arrangements For Discharge Lamps (AREA)
Description
第１図は本考案の実施例を示したもので、Ｑ１
，Ｑ２は出力段のＦＥＴ，Ｌ１，Ｌ２はインダク
タ、Ｃ３，Ｃ４は共振回路を形成するコンデンサ
、ＦＬ１，ＦＬ２は螢光灯、ＯＳＣは電圧―周波
数変調発振回路、イは出力電圧制御回路、ロはタ
イマー回路を示す。第２図は本考案の出力電圧の
時間に対する変化態様を示す図。第３図は従来形
の出力電圧の時間に対する変化態様を示す図。
Figure 1 shows an embodiment of the present invention.
, Q 2 are output stage FETs, L 1 and L 2 are inductors, C 3 and C 4 are capacitors forming a resonant circuit, FL 1 and FL 2 are fluorescent lamps, and OSC is a voltage-frequency modulation oscillation circuit. indicates the output voltage control circuit, and b indicates the timer circuit. FIG. 2 is a diagram showing how the output voltage of the present invention changes over time. FIG. 3 is a diagram showing how the conventional output voltage changes over time.
Claims (1)
出結果をもつて出力制御回路イを作動せしめて、
前記出力電圧を所定値に制限し、更に螢光灯が所
定時間内に点灯しない時、タイマー回路ロによつ
て、前記出力電圧の値を更に低下せしめるよう、
前記出力制御回路イを制御するように構成した螢
光灯用高周波インバータ電源回路。 Detecting the output voltage of the inverter power supply circuit and activating the output control circuit A based on the detection result,
limiting the output voltage to a predetermined value, and further reducing the value of the output voltage by a timer circuit B when the fluorescent lamp does not light up within a predetermined time;
A high frequency inverter power supply circuit for a fluorescent lamp configured to control the output control circuit (a).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987174079U JPH0177300U (en) | 1987-11-13 | 1987-11-13 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987174079U JPH0177300U (en) | 1987-11-13 | 1987-11-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0177300U true JPH0177300U (en) | 1989-05-24 |
Family
ID=31465954
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987174079U Pending JPH0177300U (en) | 1987-11-13 | 1987-11-13 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0177300U (en) |
-
1987
- 1987-11-13 JP JP1987174079U patent/JPH0177300U/ja active Pending
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