JPH0350796U - - Google Patents
Info
- Publication number
- JPH0350796U JPH0350796U JP10971989U JP10971989U JPH0350796U JP H0350796 U JPH0350796 U JP H0350796U JP 10971989 U JP10971989 U JP 10971989U JP 10971989 U JP10971989 U JP 10971989U JP H0350796 U JPH0350796 U JP H0350796U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- discharge lamp
- voltage
- current
- current detection
- 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
- 230000010355 oscillation Effects 0.000 claims description 3
- 239000004065 semiconductor Substances 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 8
- 239000003990 capacitor Substances 0.000 description 2
- 238000009499 grossing Methods 0.000 description 1
Description
第１図は本考案実施例の放電灯用電源装置の回
路図、第２図は本考案実施例のインバータ回路を
示す図、第３図は本考案実施例の発振駆動回路を
示す図、第４図は本考案実施例のスイツチの回路
図、第５図は本考案実施例の倍電圧整流回路を示
す図、第６図は放電灯の電圧と電流の関係を示す
図、第７図は従来の並列共振回路型インバータ回
路の電流波形と電圧波形を示す図である。
図中、１１……交流電源、１２……整流回路、
１３……チヨークコイル、１４……平滑コンデン
サ、１５……インバータ回路、１６……高周波出
力トランス、１７……電流検出回路、１８……コ
イル、１９……コンデンサ、２０……放電灯、２
１……スイツチ、２２……発振駆動回路、２３…
…補助トランス、２４……保護抵抗、２５……倍
電圧整流回路、を示す。
FIG. 1 is a circuit diagram of a discharge lamp power supply device according to an embodiment of the present invention, FIG. 2 is a diagram showing an inverter circuit according to an embodiment of the present invention, FIG. 3 is a diagram showing an oscillation drive circuit according to an embodiment of the present invention, and FIG. Figure 4 is a circuit diagram of a switch according to an embodiment of the present invention, Figure 5 is a diagram showing a voltage doubler rectifier circuit according to an embodiment of the present invention, Figure 6 is a diagram showing the relationship between voltage and current of a discharge lamp, and Figure 7 is a diagram showing a voltage doubler rectifier circuit according to an embodiment of the present invention. FIG. 2 is a diagram showing current waveforms and voltage waveforms of a conventional parallel resonant circuit type inverter circuit. In the figure, 11... AC power supply, 12... Rectifier circuit,
13... Chi York coil, 14... Smoothing capacitor, 15... Inverter circuit, 16... High frequency output transformer, 17... Current detection circuit, 18... Coil, 19... Capacitor, 20... Discharge lamp, 2
1...Switch, 22...Oscillation drive circuit, 23...
... Auxiliary transformer, 24 ... Protection resistor, 25 ... Voltage doubler rectifier circuit.
Claims (1)
半導体素子よりなるインバータ回路と、前記負荷
回路に流れる電流を検出する電流検出回路と、前
記電流検出回路で検出した電流に応じて周波数を
制御し、前記インバータ回路を駆動する発振駆動
回路と、前記放電灯の点灯時に、補助トランスの
電圧を数倍電圧にした整流出力を得、この整流出
力を該放電灯に印加する倍電圧整流回路とを備え
たことを特徴とする放電灯用電源装置。 an inverter circuit made of a semiconductor element connected to a load circuit of a discharge lamp having a resonant circuit; a current detection circuit for detecting a current flowing in the load circuit; and controlling a frequency according to the current detected by the current detection circuit; An oscillation drive circuit that drives the inverter circuit, and a voltage doubler rectifier circuit that obtains a rectified output by multiplying the voltage of the auxiliary transformer by several times the voltage when the discharge lamp is lit, and applies this rectified output to the discharge lamp. A power supply device for a discharge lamp characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10971989U JPH0350796U (en) | 1989-09-21 | 1989-09-21 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10971989U JPH0350796U (en) | 1989-09-21 | 1989-09-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0350796U true JPH0350796U (en) | 1991-05-17 |
Family
ID=31658290
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10971989U Pending JPH0350796U (en) | 1989-09-21 | 1989-09-21 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0350796U (en) |
-
1989
- 1989-09-21 JP JP10971989U patent/JPH0350796U/ja active Pending