JP3508398B2 - Power supply - Google Patents
Power supplyInfo
- Publication number
- JP3508398B2 JP3508398B2 JP16407296A JP16407296A JP3508398B2 JP 3508398 B2 JP3508398 B2 JP 3508398B2 JP 16407296 A JP16407296 A JP 16407296A JP 16407296 A JP16407296 A JP 16407296A JP 3508398 B2 JP3508398 B2 JP 3508398B2
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- Japan
- Prior art keywords
- power supply
- voltage
- power
- drive
- circuit
- Prior art date
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- Dc-Dc Converters (AREA)
- Inverter Devices (AREA)
Description
【０００１】[0001]
【発明の属する利用分野】本発明は電源装置に関する。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a power supply device.
【０００２】[0002]
【従来の技術】本発明に係る第１従来例として、負荷を
無電極放電灯とした電源装置があり、その回路図を図３
に示す。2. Description of the Related Art As a first conventional example according to the present invention, there is a power supply device in which an electrodeless discharge lamp is used as a load, and its circuit diagram is shown in FIG.
Shown in.
【０００３】本回路は、透明なあるいは内壁に蛍光体が
塗布された、球状のガラスバルブ内に、不活性ガス、金
属蒸気等の放電ガス（例えば水銀及び希ガス）を封入し
た無電極放電灯１と、この無電極放電灯１の球状の外周
に沿って近接配置された高周波電力供給用コイル２と、
高周波電力供給用コイル２に接続され、高周波電力を高
周波電力供給用コイル２に供給する高周波電源３と、高
周波電力供給用コイル２と高周波電源３との両方のマッ
チングをとって反射をなくし無電極放電灯１に効率よく
高周波電力を供給するマッチング回路４とを備えて構成
される。そして、高周波電源３から高周波電力供給用コ
イル２に数ＭＨｚから数百ＭＨｚの高周波電流を流すこ
とにより、高周波電力供給用コイル２に高周波磁界を発
生させて無電極放電灯１に高周波電力を供給し、無電極
放電灯１内に高周波プラズマ電流を発生させて紫外線も
しくは可視光を発生させる。This circuit is an electrodeless discharge lamp in which a discharge gas (for example, mercury and a rare gas) such as an inert gas or a metal vapor is enclosed in a spherical glass bulb which is transparent or whose inner wall is coated with a phosphor. 1, and a high-frequency power supply coil 2 arranged in proximity along the spherical outer circumference of the electrodeless discharge lamp 1,
A high frequency power supply 3 connected to the high frequency power supply coil 2 and supplying high frequency power to the high frequency power supply coil 2, and matching between both the high frequency power supply coil 2 and the high frequency power supply 3 to eliminate reflection and electrodeless. A matching circuit 4 that efficiently supplies high-frequency power to the discharge lamp 1 is configured. Then, by supplying a high frequency current of several MHz to several hundred MHz to the high frequency power supply coil 2 from the high frequency power supply 3, a high frequency magnetic field is generated in the high frequency power supply coil 2 and the high frequency power is supplied to the electrodeless discharge lamp 1. Then, a high-frequency plasma current is generated in the electrodeless discharge lamp 1 to generate ultraviolet rays or visible light.
【０００４】また、水晶振動子Ｘを用いた発振回路５
と、発振回路５の発振出力を増幅するプリアンプ６とか
ら電力変換手段７（以下、メインアンプ７と呼ぶ。）の
ドライブ装置９を構成し、ドライブ装置９とメインアン
プ７とから高周波電源３を構成する。Further, an oscillation circuit 5 using the crystal unit X
And a preamplifier 6 that amplifies the oscillation output of the oscillation circuit 5 constitute a drive device 9 for power conversion means 7 (hereinafter referred to as the main amplifier 7), and the drive device 9 and the main amplifier 7 form a high-frequency power source 3. Constitute.
【０００５】メインアンプ７は、２つの電解効果トラン
ジスタ（以下、スイッチング素子と呼ぶ。）Ｑ１，Ｑ２
の直列接続を有する所謂Ｄ級増幅器で構成されている。
スイッチング素子Ｑ１，Ｑ２のドレイン・ソース間電圧
波形は矩形波状になり、そのピーク値電圧は電源電圧Ｅ
に略等しくなる。スイッチング素子Ｑ１，Ｑ２のドレイ
ン・ソース間電圧波形のピーク値は比較的大きな値にな
るので、電源電圧Ｅの値も比較的大きな値に設定され
る。ここでは、電源電圧Ｅの値、つまりメインアンプ７
の駆動電圧値を４００ＶＤＣ、ドライブ装置９の駆動電
圧値を２４ＶＤＣとする。また、スイッチング素子Ｑ
１，Ｑ２の動作周波数をＩＳＭ（Ｉｎｄｕｓｔｒｉａ
ｌ，Ｓｃｉｅｎｔｉｆｉｃ ａｎｄ Ｍｅｄｅｉｃａ
ｌ）バンドの１３．５６ＭＨｚとすると、ドライブ装置
９への入力電力は約５Ｗ必要となる。これはスイッチン
グ素子Ｑ１，Ｑ２を高周波動作する際に、スイッチング
素子Ｑ１，Ｑ２の入力容量を充放電する電流が必要な為
である。The main amplifier 7 has two field effect transistors (hereinafter referred to as switching elements) Q1 and Q2.
It is composed of a so-called class D amplifier having a series connection of.
The drain-source voltage waveforms of the switching elements Q1 and Q2 are rectangular waves, and the peak value voltage is the power supply voltage E.
Is approximately equal to. Since the peak values of the drain-source voltage waveforms of the switching elements Q1 and Q2 are relatively large, the power supply voltage E is also set to a relatively large value. Here, the value of the power supply voltage E, that is, the main amplifier 7
The drive voltage value of the drive device 9 is 400 VDC, and the drive voltage value of the drive device 9 is 24 VDC. In addition, the switching element Q
The operating frequencies of 1 and Q2 are ISM (Industria)
l, Scientific and Medica
If the l) band is 13.56 MHz, the input power to the drive device 9 is required to be about 5 W. This is because a current that charges and discharges the input capacitance of the switching elements Q1 and Q2 is required when operating the switching elements Q1 and Q2 at a high frequency.
【０００６】しかし、ドライブ装置９への入力電力が約
５Ｗ必要な場合、抵抗Ｒ１でのロスは非常に大きなもの
となり、回路効率が悪くなってしまう、という第１の問
題点が生じてしまう。However, the first problem is that if the input power to the drive device 9 is required to be about 5 W, the loss in the resistor R1 becomes very large and the circuit efficiency becomes poor. Will occur.
【０００７】この様な第１の問題点を解決する手段とし
て、本発明出願人出願の特願平７−２６６３１号に示し
たものがあり、本発明に係る第２従来例として、その回
路図を図４に示す。As means for solving such a first problem, there is one disclosed in Japanese Patent Application No. 7-26631 filed by the applicant of the present invention, and a circuit diagram thereof as a second conventional example according to the present invention. Is shown in FIG.
【０００８】本回路は、交流電源ＡＣを整流器ＤＢ１で
整流した直流電圧出力が入力される第１の直流電源Ｅ１
をメインアンプ７の駆動電源とすると共に、第１の直流
電源Ｅ１の直流電圧出力が入力される第２の直流電源Ｅ
２をドライブ装置９の駆動電源としたものである。この
様に構成することで、ドライブ装置９にはメインアンプ
７に供給されるより低い電圧が供給されるので、ドライ
ブ装置９でのロスを低減することができる。更に、交流
電源ＡＣの電源変動に対しても安定した電圧をドライブ
装置９に供給することができるので、メインアンプ７か
ら安定した高周波電力出力を得ることができる。This circuit includes a first DC power source E1 to which a DC voltage output obtained by rectifying the AC power source AC by a rectifier DB1 is input.
As a drive power source for the main amplifier 7 and a second DC power source E to which the DC voltage output of the first DC power source E1 is input.
2 is a drive power source for the drive device 9. With this configuration, the drive device 9 is supplied with a lower voltage than that supplied to the main amplifier 7, so that the loss in the drive device 9 can be reduced. Further, a stable voltage can be supplied to the drive device 9 even when the power source of the AC power source AC fluctuates, so that a stable high frequency power output can be obtained from the main amplifier 7.
【０００９】ここで、第１の直流電源Ｅ１は、交流電源
ＡＣを整流器ＤＢ１で整流し、インダクタンス素子Ｌ１
１、スイッチング素子Ｑ１１、ダイオードＤ１１、平滑
コンデンサＣ１１、制御回路８１から構成される所謂昇
圧チョッパ回路で高電圧に昇圧し、平滑コンデンサＣ１
１で平滑すると共に、入力電流歪を改善できるものであ
る。なお、制御回路８１は、平滑コンデンサＣ１１の両
端電圧を検出してスイッチング素子Ｑ１１を制御するも
のである。Here, the first DC power source E1 rectifies the AC power source AC by the rectifier DB1 to generate the inductance element L1.
1. A so-called step-up chopper circuit composed of the switching element Q11, the diode D11, the smoothing capacitor C11, and the control circuit 81 boosts the voltage to a high voltage, and the smoothing capacitor C1.
In addition to smoothing at 1, the input current distortion can be improved. The control circuit 81 controls the switching element Q11 by detecting the voltage across the smoothing capacitor C11.
【００１０】また、第２の直流電源Ｅ２は、スイッチン
グ素子Ｑ１２、インダクタンス素子Ｌ１２、ダイオード
Ｄ１２、平滑コンデンサＣ１２、制御回路８２から構成
される所謂降圧チョッパ回路で低電圧に降圧し、平滑コ
ンデンサＣ１２で平滑するものである。なお、制御回路
８２は、平滑コンデンサＣ１２の両端電圧を検出してス
イッチング素子Ｑ１２を制御するものである。The second DC power source E2 is a so-called step-down chopper circuit composed of a switching element Q12, an inductance element L12, a diode D12, a smoothing capacitor C12, and a control circuit 82, and the voltage is lowered to a low voltage. It smooths. The control circuit 82 detects the voltage across the smoothing capacitor C12 and controls the switching element Q12.
【００１１】ここでは第１の直流電源Ｅ１として昇圧チ
ョッパ回路を用い、第２の直流電源Ｅ２として降圧チョ
ッパ回路を用いたが、第１の直流電源Ｅ１及び第２の直
流電源Ｅ２として、所謂昇降圧チョッパ回路を用いても
よい。Although the step-up chopper circuit is used as the first DC power source E1 and the step-down chopper circuit is used as the second DC power source E2 here, the so-called ascending / descending as the first DC power source E1 and the second DC power source E2 is used. A pressure chopper circuit may be used.
【００１２】[0012]
【発明が解決しようとする課題】しかし、上記第２従来
例に於いては、メインアンプ７の駆動電圧値（例えば４
００ＶＤＣ）とドライブ装置９の駆動電圧値（例えば２
４ＶＤＣ）との電圧差が大きい場合は、第２の直流電源
Ｅ２でのロスが大きくなってしまう、という第２の問題
点が生じる。However, in the second conventional example, the drive voltage value of the main amplifier 7 (for example, 4) is used.
00 VDC) and the drive voltage value of the drive device 9 (for example, 2
If the voltage difference with 4 VDC) is large, the second problem arises that the loss in the second DC power source E2 becomes large.
【００１３】本発明は上記全ての問題点に鑑みてなされ
たもので、その目的とするところは、回路効率を向上可
能な電源装置を提供することである。The present invention has been made in view of all the above problems, and an object thereof is to provide a power supply device capable of improving circuit efficiency.
【００１４】[0014]
【課題を解決するための手段】上記問題点を解決するた
めに、請求項１記載の発明によれば、少なくとも１つの
スイッチング素子を有すると共に、交流電源を高周波電
力に変換して負荷に供給する電力変換手段と、前記スイ
ッチング素子を数ＭＨｚから数百ＭＨｚで駆動するドラ
イブ装置と、前記交流電源電圧を直流電圧に変換して前
記電力変換手段の駆動電源とする少なくとも１つのスイ
ッチング素子を含む第１の直流電源と、前記第１の直流
電源と並列に接続され、前記ドライブ装置の駆動電源と
する少なくとも１つのスイッチング素子を含む第２の直
流電源と、を備え、前記第２の直流電源の出力電圧は、
前記第１の直流電源の出力電圧より小さく、前記ドライ
ブ装置は、高周波電力を発振する発振回路と、前記発振
回路の発振出力を増幅して前記電力変換手段のスイッチ
ング素子を駆動するプリアンプとから構成され、前記負
荷は無電極放電灯を含んでなることを特徴とする電源装
置。In order to solve the above problems, according to the invention of claim 1, at least one switching element is provided, and the AC power supply is converted into high frequency power and supplied to the load. Power conversion means, a drive device that drives the switching element at several MHz to several hundreds MHz, and at least one switch that converts the AC power supply voltage into a DC voltage to drive the power conversion means.
A first direct current power supply including a switching element, and the first direct current
Connected power source and in parallel, and a second DC power source comprising at least one switching element as a drive power source of the drive unit, the output voltage of the second DC power supply,
The output voltage of the first DC power supply is smaller than
The device includes an oscillating circuit that oscillates high frequency power and the oscillating circuit.
A switch of the power conversion means for amplifying an oscillation output of a circuit
The preamplifier that drives the
A power supply device , wherein the load includes an electrodeless discharge lamp .
【００１５】[0015]
【００１６】請求項２記載の発明によれば、交流電源電
圧を直流電圧に変換して発振回路の駆動電源とする第２
の直流電源と、交流電源電圧を直流電圧に変換してプリ
アンプの駆動電源とする第３の直流電源とを設けること
を特徴とする。According to a second aspect of the present invention, the AC power supply voltage is converted into a DC voltage for use as a drive power supply for the oscillation circuit.
And a third DC power supply for converting the AC power supply voltage into a DC voltage to serve as a drive power source for the preamplifier.
【００１７】請求項３記載の発明によれば、第３の直流
電源は、第２の直流電源以下の直流電圧出力を有するも
のであることを特徴とする。According to the third aspect of the present invention, the third DC power source is characterized in that it is one having a DC voltage output below the second DC power source.
【００１８】請求項４記載の発明によれば、第１の直流
電源は、昇圧チョッパ回路であり、第２の直流電源は降
圧チョッパ回路であり、第３の直流電源は、整流器で整
流した交流電源電圧を平滑コンデンサで平滑するもので
あることを特徴とする。According to the invention of claim 4 , the first DC power supply is a step-up chopper circuit, the second DC power supply is a step-down chopper circuit, and the third DC power supply is an AC rectified by a rectifier. The power supply voltage is smoothed by a smoothing capacitor.
【００１９】請求項５記載の発明によれば、第１の直流
電源と、第２の直流電源と、第３の直流電源とは、昇圧
チョッパ回路と、昇降圧チョッパ回路と、降圧チョッパ
回路とのいずれかであることを特徴とする。According to the invention of claim 5 , the first DC power supply, the second DC power supply, and the third DC power supply are a step-up chopper circuit, a buck-boost chopper circuit, and a step-down chopper circuit. It is characterized by being either.
【００２０】請求項６記載の発明によれば、電力変換手
段は、Ｄ級増幅回路であることを特徴とする。According to a sixth aspect of the present invention, the power conversion means is a class D amplifier circuit.
【００２１】[0021]
【００２２】[0022]
（実施の形態１）本発明に係る第１の実施の形態の回路
図を図１に示す。(Embodiment 1) FIG. 1 shows a circuit diagram of a first embodiment according to the present invention.
【００２３】図４に示した第２従来例と異なる点は、交
流電源ＡＣを整流器ＤＢ２で整流した直流電圧を第２の
直流電源Ｅ２に供給する様に構成したことであり、つま
り、交流電源ＡＣに対して並列に第１の直流電源Ｅ１と
第２の直流電源Ｅ２とを接続する様に構成したことであ
り、その他の第２従来例と同一構成には同一符号を付す
ことにより説明を省略する。The point different from the second conventional example shown in FIG. 4 is that the DC voltage obtained by rectifying the AC power supply AC by the rectifier DB2 is supplied to the second DC power supply E2, that is, the AC power supply. The configuration is such that the first DC power source E1 and the second DC power source E2 are connected in parallel to the AC, and the description is given by attaching the same reference numerals to the same configurations as the other second conventional examples. Omit it.
【００２４】この様に構成したことにより、第２の直流
電源Ｅ２を構成するスイッチング素子の耐圧を小さくす
ることができ、第２の直流電源Ｅ２を小型化することが
できると共に、第２の直流電源Ｅ２の入出力電圧の差を
小さくできるので、第２の直流電源Ｅ２でのロスを低減
でき、装置全体での回路効率を向上できる。更にまた、
第１の直流電源Ｅ１はメインアンプ７にのみに電力供給
すればよいので、第１の直流電源Ｅ１からの供給電力を
低減でき、第１の直流電源Ｅ１を構成するスイッチング
素子の耐圧を小さくでき、第１の直流電源Ｅ１を小型化
することができると共に、装置全体での回路効率を向上
できる。With this configuration, the withstand voltage of the switching element forming the second DC power supply E2 can be reduced, the second DC power supply E2 can be downsized, and the second DC power supply E2 can be downsized. Since the difference between the input and output voltages of the power supply E2 can be reduced, the loss in the second DC power supply E2 can be reduced and the circuit efficiency of the entire device can be improved. Furthermore,
Since the first DC power supply E1 only needs to supply power to the main amplifier 7, the power supplied from the first DC power supply E1 can be reduced, and the withstand voltage of the switching element forming the first DC power supply E1 can be reduced. The first DC power source E1 can be downsized, and the circuit efficiency of the entire device can be improved.
【００２５】なお、本実施の形態に於いては、整流器Ｄ
Ｂ１と整流器ＤＢ２とは兼用して１つの整流器ＤＢを用
いてもよい。In the present embodiment, the rectifier D
B1 and rectifier DB2 may be combined and one rectifier DB may be used.
【００２６】（実施の形態２）本発明に係る第２の実施
の形態の回路図を図２に示す。(Second Embodiment) FIG. 2 shows a circuit diagram of a second embodiment according to the present invention.
【００２７】図１に示した第１の実施の形態と異なる点
は、交流電源ＡＣを直流電圧に変換してプリアンプ６の
駆動電圧を供給する第３の直流電源Ｅ３を設けると共
に、第２の直流電源Ｅ２から発振回路５の駆動電圧を供
給する様に構成したことであり、その他の第１の実施の
形態と同一構成には同一符号を付すことにより説明を省
略する。なお、第３の直流電源Ｅ３は、交流電源ＡＣを
整流器ＤＢ３で整流し、平滑コンデンサＣ２１で平滑す
る直流電圧（例えば１４０ＶＤＣ）を出力するものであ
る。The difference from the first embodiment shown in FIG. 1 is that a third DC power supply E3 for converting the AC power supply AC into a DC voltage and supplying the drive voltage of the preamplifier 6 is provided, and the second DC power supply E3 is provided. The configuration is such that the drive voltage of the oscillation circuit 5 is supplied from the DC power source E2, and the same configurations as those of the other first embodiment are denoted by the same reference numerals and the description thereof will be omitted. The third DC power source E3 rectifies the AC power source AC by the rectifier DB3 and outputs a DC voltage (for example, 140 VDC) smoothed by the smoothing capacitor C21.
【００２８】この様に構成したことにより、第２の直流
電源Ｅ２は発振回路５の駆動電源電圧のみを供給すれば
よく、第２の直流電源Ｅ２を構成するスイッチング素子
の耐圧をより小さくすることができ、第２の直流電源Ｅ
２をより小型化することができると共に、第２の直流電
源Ｅ２でのロスをより低減でき、装置全体での回路効率
をより向上できる。また、第３の直流電源Ｅ３は、メイ
ンアンプ７に比較的大きな電力の信号を供給しなければ
ならない場合に、より適している。更にまた、プリアン
プ６の駆動電源として第３の直流電源Ｅ３を設けたの
で、発振回路５の出力電圧よりも高い電圧を、プリアン
プ６の駆動電源電圧とすることもできる。With this configuration, the second DC power supply E2 only needs to supply the drive power supply voltage of the oscillation circuit 5, and the withstand voltage of the switching element forming the second DC power supply E2 can be made smaller. The second DC power source E
2 can be further downsized, the loss in the second DC power source E2 can be further reduced, and the circuit efficiency of the entire device can be further improved. The third DC power supply E3 is more suitable when the main amplifier 7 must be supplied with a signal of relatively large power. Furthermore, since the third DC power supply E3 is provided as the drive power supply for the preamplifier 6, it is possible to use a voltage higher than the output voltage of the oscillation circuit 5 as the drive power supply voltage for the preamplifier 6.
【００２９】なお、本実施の形態に於いては、整流器Ｄ
Ｂ１〜整流器ＤＢ３は兼用して１つの整流器ＤＢを用い
ても、２つの整流器ＤＢを用いてもよく、上記全ての実
施の形態に於いては、プリアンプ６を複数段設けてもよ
い。更に、第１の直流電源Ｅ１は、昇圧チョッパ回路も
しくは昇降圧チョッパ回路のいずれかを用いてもよく、
第２の直流電源Ｅ２と第３の直流電源Ｅ３とは、昇圧チ
ョッパ回路もしくは昇降圧チョッパ回路もしくは降圧チ
ョッパ回路のいずれかを用いてもよい。更にまた、上記
全ての実施の形態では、負荷として無電極放電灯を用い
たが、例えば有電極の放電灯などの他の負荷を用いても
よい。Incidentally, in the present embodiment, the rectifier D
B1 to rectifier DB3 may be used in combination and one rectifier DB may be used, or two rectifiers DB may be used. In all of the above-described embodiments, a plurality of preamplifiers 6 may be provided. Furthermore, the first DC power source E1 may use either a step-up chopper circuit or a step-up / step-down chopper circuit,
As the second DC power supply E2 and the third DC power supply E3, either a step-up chopper circuit, a step-up / step-down chopper circuit, or a step-down chopper circuit may be used. Furthermore, in all the above-mentioned embodiments, the electrodeless discharge lamp is used as the load, but another load such as a discharge lamp having an electrode may be used.
【００３０】[0030]
【発明の効果】請求項１から請求項６に記載の発明によ
れば、第１の直流電源を構成するスイッチング素子の耐
圧を小さくでき、第１の直流電源を小型化可能であると
共に、第２の直流電源を小型化することが可能で、第２
の直流電源でのロスを低減可能で、装置全体での回路効
率を向上可能である電源装置を提供できる。Effects of the Invention According to the invention described in claim 1 or we claim 6, the breakdown voltage of switching elements constituting a first DC power supply can be reduced, with the first DC power supply can be miniaturized, It is possible to downsize the second DC power source, and
It is possible to provide a power supply device capable of reducing the loss in the DC power supply and improving the circuit efficiency of the entire device.
【００３１】[0031]
【図１】本発明に係る第１の実施の形態を示す回路図で
ある。FIG. 1 is a circuit diagram showing a first embodiment according to the present invention.
【図２】本発明に係る第２の実施の形態を示す回路図で
ある。FIG. 2 is a circuit diagram showing a second embodiment according to the present invention.
【図３】本発明に係る第１従来例を示す回路図である。FIG. 3 is a circuit diagram showing a first conventional example according to the present invention.
【図４】本発明に係る第２従来例を示す回路図である。FIG. 4 is a circuit diagram showing a second conventional example according to the present invention.
ＡＣ 交流電源 Ｅ 直流電源 Ｑ スイッチング素子 １ 無電極放電灯 ５ 発振回路 ６ プリアンプ ７ 電力変換手段 ９ ドライブ装置 ７ 電力供給用手段 ９ ドライブ装置 AC AC power supply E DC power supply Q switching element 1 electrodeless discharge lamp 5 oscillator circuit 6 preamplifier 7 Power conversion means 9 Drive device 7 Means for power supply 9 Drive device
───────────────────────────────────────────────────── フロントページの続き (56)参考文献 特開 平７−235389（ＪＰ，Ａ) 特開 平４−159804（ＪＰ，Ａ) 特開 平１−248971（ＪＰ，Ａ) 特開 平８−223914（ＪＰ，Ａ) 実開 平１−166489（ＪＰ，Ｕ) 実公 平６−44317（ＪＰ，Ｙ２) (58)調査した分野(Int.Cl.7，ＤＢ名) H02M 7/48 H05B 41/24 H02M 3/00 ─────────────────────────────────────────────────── ─── Continuation of the front page (56) Reference JP-A-7-235389 (JP, A) JP-A-4-159804 (JP, A) JP-A-1-248971 (JP, A) JP-A-8- 223914 (JP, A) Actual Kaihei 1-166489 (JP, U) Actual Kohei 6-44317 (JP, Y2) (58) Fields investigated (Int.Cl. 7 , DB name) H02M 7/48 H05B 41 / 24 H02M 3/00
Claims (6)
すると共に、交流電源を高周波電力に変換して負荷に供
給する電力変換手段と、前記スイッチング素子を数ＭＨ
ｚから数百ＭＨｚで駆動するドライブ装置と、前記交流
電源電圧を直流電圧に変換して前記電力変換手段の駆動
電源とする少なくとも１つのスイッチング素子を含む第
１の直流電源と、前記第１の直流電源と並列に接続さ
れ、前記ドライブ装置の駆動電源とする少なくとも１つ
のスイッチング素子を含む第２の直流電源と、を備え、 前記第２の直流電源の出力電圧は、前記第１の直流電源
の出力電圧より小さく、前記ドライブ装置は、高周波電
力を発振する発振回路と、前記発振回路の発振出力を増
幅して前記電力変換手段のスイッチング素子を駆動する
プリアンプとから構成され、前記負荷は無電極放電灯を
含んでなることを特徴とする電源装置。1. A power conversion unit which has at least one switching element, converts an AC power supply into high frequency power and supplies the high frequency power to a load, and the switching element comprises several MH.
a drive device driven from z to several hundreds MHz, a first DC power supply including at least one switching element that converts the AC power supply voltage into a DC voltage to drive the power conversion means, and the first DC power supply . Connected in parallel with DC power supply
It is, at least one of the driving power of the drive unit
Comprising a second DC power supply including a switching element, the said second output voltage of the DC power source, the first DC power supply
Output voltage of the drive device,
The oscillation circuit that oscillates the power and the oscillation output of the oscillation circuit
To drive the switching element of the power conversion means
It is composed of a preamplifier and the load is an electrodeless discharge lamp.
A power supply device characterized by comprising .
発振回路の駆動電源とする第２の直流電源と、交流電源
電圧を直流電圧に変換して前記プリアンプの駆動電源と
する第３の直流電源とを設けることを特徴とする請求項
１記載の電源装置。 2. A second DC power supply for converting an AC power supply voltage into a DC voltage for use as a drive power supply for the oscillation circuit, and a third DC power supply for converting an AC power supply voltage into a DC voltage as a drive power supply for the preamplifier. A DC power supply is provided.
1. The power supply device according to 1 .
電源以下の直流電圧出力を有するものであることを特徴
とする請求項２記載の電源装置。 Wherein said third direct current power source, the power supply apparatus according to claim 2, characterized in that with a DC voltage output below the second DC power supply.
路であり、前記第２の直流電源は降圧チョッパ回路であ
り、前記第３の直流電源は、整流器で整流した前記交流
電源電圧を平滑コンデンサで平滑するものであることを
特徴とする請求項１から請求項３のいずれかに記載の電
源装置。 Wherein said first DC power supply is a step-up chopper circuit, the second DC power supply is a step-down chopper circuit, the third DC power supply smoothing the AC power supply voltage rectified by the rectifier The power supply device according to any one of claims 1 to 3 , which is smoothed by a capacitor.
電源と、前記第３の直流電源とは、昇圧チョッパ回路
と、昇降圧チョッパ回路と、降圧チョッパ回路とのいず
れかであることを特徴とする請求項１から請求項３のい
ずれかに記載の電源装置。And wherein said first DC power source, and the second DC power supply, wherein the third direct-current power supply, a boost chopper circuit, a buck-boost chopper circuit, is either a step-down chopper circuit the power supply device according to any one of claims 1 to 3, characterized in that.
ることを特徴とする請求項１記載の電源装置。 Wherein said power conversion means, power supply device according to claim 1, wherein it is a class D amplifier circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16407296A JP3508398B2 (en) | 1996-06-25 | 1996-06-25 | Power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP16407296A JP3508398B2 (en) | 1996-06-25 | 1996-06-25 | Power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH1014243A JPH1014243A (en) | 1998-01-16 |
| JP3508398B2 true JP3508398B2 (en) | 2004-03-22 |
Family
ID=15786254
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP16407296A Expired - Fee Related JP3508398B2 (en) | 1996-06-25 | 1996-06-25 | Power supply |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JP3508398B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2002100493A (en) * | 2000-09-26 | 2002-04-05 | Toshiba Lighting & Technology Corp | Electrodeless discharge lamp device |
-
1996
- 1996-06-25 JP JP16407296A patent/JP3508398B2/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| JPH1014243A (en) | 1998-01-16 |
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