JPH02148595U - - Google Patents
Info
- Publication number
- JPH02148595U JPH02148595U JP5709589U JP5709589U JPH02148595U JP H02148595 U JPH02148595 U JP H02148595U JP 5709589 U JP5709589 U JP 5709589U JP 5709589 U JP5709589 U JP 5709589U JP H02148595 U JPH02148595 U JP H02148595U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- current
- phase
- detection circuit
- control signal
- 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 7
- 238000010586 diagram Methods 0.000 description 6
- 239000003990 capacitor Substances 0.000 description 1
- 238000009499 grossing Methods 0.000 description 1
Landscapes
- Circuit Arrangements For Discharge Lamps (AREA)
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電流検出回路を示
す図、第３図は本考案実施例の位相検出回路を示
す図、第４図は点灯前の直列共振回路の等価回路
図、第５図は点灯後の直列共振回路の等価回路図
、第６図は本考案実施例の位相による電流制御を
示すタイミングチヤート、第７図は放電灯の電圧
と電流の関係を示す図、第８図は従来の並列共振
回路型イ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は交流電源、１２はスイツチ、１３
はブリツジ整流回路、１４はチヨークコイル、１
５は平滑コンデンサ、１６はインバータ回路、１
７は増幅回路、１８は直列共振回路、２３は電流
検出回路、２４は位相検出回路、２５は負荷、Ｔ
Ｒ１，ＴＲ２はトランジスタを示す。
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 a current detection circuit according to an embodiment of the present invention, and FIG. 3 is a diagram showing a phase detection circuit according to an embodiment of the present invention. Fig. 4 is an equivalent circuit diagram of a series resonant circuit before lighting, Fig. 5 is an equivalent circuit diagram of a series resonant circuit after lighting, Fig. 6 is a timing chart showing current control by phase in the embodiment of the present invention, and Fig. 7 is an equivalent circuit diagram of a series resonant circuit before lighting. This figure shows the relationship between voltage and current of a discharge lamp, and FIG. 8 shows the current waveform and voltage waveform of a conventional parallel resonant circuit type inverter circuit. In the figure, 11 is an AC power supply, 12 is a switch, and 13
is a bridge rectifier circuit, 14 is a chiyoke coil, 1
5 is a smoothing capacitor, 16 is an inverter circuit, 1
7 is an amplifier circuit, 18 is a series resonant circuit, 23 is a current detection circuit, 24 is a phase detection circuit, 25 is a load, T
R1 and TR2 indicate transistors.
Claims (1)
より駆動されるインバータ回路と、前記インバー
タ回路の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、前記インバ
ータ回路から検出した電流の位相を変化させた位
相の出力制御信号を得、この出力制御信号を増幅
回路に与える位相検出回路とを備え、定電流動作
で自励共振を行うことを特徴とする放電灯用電源
装置。 an inverter circuit connected to a load circuit of a series resonant circuit and driven by an amplifier circuit; a current detection circuit that detects the current of the inverter circuit; and a current detected by the inverter circuit according to the current detected by the current detection circuit. A power source for a discharge lamp, characterized in that the power source is equipped with a phase detection circuit that obtains a phase output control signal by changing the phase of a current that is generated, and provides this output control signal to an amplifier circuit, and performs self-excited resonance in constant current operation. Device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5709589U JPH02148595U (en) | 1989-05-19 | 1989-05-19 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP5709589U JPH02148595U (en) | 1989-05-19 | 1989-05-19 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02148595U true JPH02148595U (en) | 1990-12-18 |
Family
ID=31581497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP5709589U Pending JPH02148595U (en) | 1989-05-19 | 1989-05-19 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02148595U (en) |
-
1989
- 1989-05-19 JP JP5709589U patent/JPH02148595U/ja active Pending
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