JPH02264311A - Operation indication circuit for power circuit - Google Patents
Operation indication circuit for power circuitInfo
- Publication number
- JPH02264311A JPH02264311A JP8612089A JP8612089A JPH02264311A JP H02264311 A JPH02264311 A JP H02264311A JP 8612089 A JP8612089 A JP 8612089A JP 8612089 A JP8612089 A JP 8612089A JP H02264311 A JPH02264311 A JP H02264311A
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- voltage
- led
- power supply
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Abstract
Description
【発明の詳細な説明】
（イ）産業上の利用分野
この発明は、電源回路の動作表示回路、特に出力電圧低
下も区別表示し得る動作表示回路に関する。DETAILED DESCRIPTION OF THE INVENTION (A) Field of Industrial Application The present invention relates to an operation display circuit for a power supply circuit, and more particularly to an operation display circuit that can distinguish output voltage drop.
（ロ）従来の技術
−ｇに、交流電圧あるいは直流電圧を入力として直流電
圧を出力する電源ユニットには、出力が出ていることを
示すため、動作表示用のＬＥＤ（発光ダイオード）が設
けられている。この種の電源回路の動作表示回路として
、従来、第３図、第４図、第５図に示すものがある。第
４図に示すものは、入力回路１、電源トランス２を経て
入力される交流電圧を、ダイオード３で整流し、コンデ
ンサ４とチジークコイル５で平滑された直流電圧が出力
端子１２．１３より出力されるものであり、出力端子１
２．１３に並列に抵抗８、ＬＥＤ９の直列回路からなる
動作表示回路が接続されている。第５図に示すものは、
動作表示回路として、出力端子１２．１３に並列に抵抗
８、ツェナダイオード１０．ＬＥＤ９の直列回路が接続
されている。また、第３図に示すものは、出力端子１２
．１３に並列に、抵抗日、ＬＥＤ９の直列回路を動作表
示回路として接続するとともに、入力回路１にもＬＥＤ
ＩＩを備えている。(b) Conventional technology - In g, a power supply unit that receives AC voltage or DC voltage as input and outputs DC voltage is equipped with an LED (light emitting diode) to indicate operation in order to indicate that output is being output. ing. Conventional operation display circuits for this type of power supply circuit include those shown in FIGS. 3, 4, and 5. In the circuit shown in FIG. 4, an AC voltage inputted through an input circuit 1 and a power transformer 2 is rectified by a diode 3, and a DC voltage smoothed by a capacitor 4 and a chijik coil 5 is output from an output terminal 12.13. output terminal 1
An operation display circuit consisting of a series circuit of a resistor 8 and an LED 9 is connected in parallel to 2.13. What is shown in Figure 5 is
As an operation display circuit, a resistor 8 and a Zener diode 10 are connected in parallel to the output terminals 12 and 13. A series circuit of LED9 is connected. In addition, the one shown in FIG. 3 has an output terminal 12
．． A series circuit of a resistor and an LED 9 is connected in parallel to the input circuit 13 as an operation display circuit, and an LED is also connected to the input circuit 1.
II.
上記各回路において、第６図の（ａ）に示すように、入
力電圧が正常であり、出力電圧が何らかの理由で低下し
、再び復帰する場合を想定すると、第４図の回路では、
第６図の（Ｃ）に示すようにＬＥＤ９には、出力電圧の
変化に応じ、出力電圧が低くなれば暗くなる。第５図の
回路では、ツェナダイオードｌＯが設けられているので
、出力電圧が低下し、所定レベル以下になり、ツェナダ
イオードがオフすると、ＬＥＤ９も消灯する〔第６図の
（ｅ）参照〕。また、第３図の回路では、入力電圧及び
出力電圧が第６図の（ａ）に示す状態であると、第６図
の（Ｃ）に示すように、ＬＥＤ９は、出力電圧の低下に
応じ暗くなり、ＬＥＤＩＩは、そのまま点灯を継続する
。In each of the above circuits, assuming that the input voltage is normal and the output voltage drops for some reason and returns again, as shown in FIG. 6(a), in the circuit of FIG.
As shown in FIG. 6(C), the LED 9 becomes darker as the output voltage decreases in response to changes in the output voltage. In the circuit shown in FIG. 5, since the Zener diode IO is provided, the output voltage decreases to a predetermined level or less, and when the Zener diode is turned off, the LED 9 is also turned off [see (e) in FIG. 6]. In addition, in the circuit of FIG. 3, when the input voltage and the output voltage are in the state shown in FIG. 6(a), the LED 9 will respond to the decrease in the output voltage as shown in FIG. It becomes dark, and the LED II continues to light up.
（ハ）発明が解決しようとする課題
上記第４図の電源回路に負荷を接続した場合において、
誤って出力端子１２．１３を短絡したり、負荷電流をと
り過ぎたりすると、図示外の過電流保護回路が動作し、
出力電圧が低下し、（イ）出力動作表示灯であるＬＥＤ
９が消えるため入力が入っていないのか、過電流保護回
路が働いているのか区別がつかない。（ロ）従来電圧が
中途半端に低下した場合、ＬＥＤ９が少し暗くなるが、
点灯しているため、過電流保護回路が働いていることに
気づかないという不具合がある。(c) Problem to be solved by the invention When a load is connected to the power supply circuit shown in FIG. 4 above,
If you accidentally short-circuit the output terminals 12 and 13 or draw too much load current, an overcurrent protection circuit (not shown) will operate.
When the output voltage decreases, (a) the LED which is the output operation indicator light
Since 9 disappears, it is difficult to tell whether there is no input or whether the overcurrent protection circuit is working. (b) Conventionally, when the voltage drops halfway, the LED 9 becomes a little dim.
Because the light is on, there is a problem that people do not realize that the overcurrent protection circuit is working.
第５図の回路はツェナダイオード１０をＬ Ｅ Ｄ９に
接続しているため、出力電圧が所定レベル以下にすると
１． Ｌ Ｅ Ｄ ９が消灯するので、上記（ロ）の不
具合は解消されるが、（イ）の問題点は解消されない。In the circuit shown in FIG. 5, the Zener diode 10 is connected to the LED 9, so when the output voltage falls below a predetermined level, 1. Since LED 9 goes out, the above problem (b) is solved, but the problem (a) is not solved.
また、第３図の回路は、第４図の回路に加えて、入力回
路１にＬＥＤＩＩを設けており、入力電圧が加えられな
い場合、ＬＥＤＩＩが点灯しないので、上記（イ）の問
題は解消されるが、（ロ）の問題が依然として残る。ま
た、この回路では電源ユニットのパネル面にＬＥＤを２
個設けなくてはならず、パネルスペースを多く要する。In addition, the circuit in Figure 3 has an LED II in the input circuit 1 in addition to the circuit in Figure 4, and if no input voltage is applied, the LED II will not light up, so the above problem (a) is resolved. However, problem (b) still remains. Also, in this circuit, two LEDs are installed on the panel surface of the power supply unit.
Therefore, a large amount of panel space is required.
−次側回路と二次側回路に各々ＬＥＤを設けるため、そ
の間の絶縁距離を保つのが大変である。また、２つのＬ
ＥＤの点灯状態から直感的にその意味を解釈しにくい等
の問題がある。-Since LEDs are provided in each of the primary and secondary circuits, it is difficult to maintain an insulation distance between them. Also, two L
There are problems such as it is difficult to intuitively interpret the meaning from the lighting state of the ED.
この発明は、上記問題点に着目してなされたものであっ
て、入力がない場合と、過電流保護回路が働いた場合の
区別を１個の表示灯で、確実になし得る電源回路の動作
表示回路を提供することを目的としている。The present invention has been made in view of the above-mentioned problems, and the operation of the power supply circuit can reliably distinguish between the case where there is no input and the case where the overcurrent protection circuit is activated by using a single indicator light. The purpose is to provide display circuits.
（ニ）課題を解決するための手段及び作用この発明ρ電
源回路の動作表示回路は、電源回路の出力側に、電源回
路の出力電圧が所定レベル以上でオンし、所定レベルよ
りも低くなるとオフする定電圧素子と、動作表示灯と、
前記定電圧素子がオンしていると、前記動作表示灯を連
続点灯させる駆動素子と、前記定電圧素子がオフすると
、前記低下した出力電圧に応答して前記駆動素子を間欠
的にオンして前記動作表示灯を点滅点灯させる充放電回
路とから構成されている。(d) Means and Effects for Solving the Problems The operation display circuit of the ρ power supply circuit of the present invention is provided on the output side of the power supply circuit, and is turned on when the output voltage of the power supply circuit is equal to or higher than a predetermined level, and is turned off when the output voltage of the power supply circuit is lower than a predetermined level. a constant voltage element, an operation indicator light,
A drive element that continuously lights up the operation indicator when the constant voltage element is on, and a drive element that intermittently turns on the drive element in response to the decreased output voltage when the constant voltage element is off. and a charging/discharging circuit that causes the operation indicator light to flash on and off.
この電源回路の動作表示回路では、電源回路の出力電圧
が所定レベル以上であると、つまり正常であると、定電
圧素子がオンし、応じて駆動素子もオンし、動作表示灯
が連続点灯する。電源回路への入力がない場合は、出力
電圧が０であり、したがって定電圧素子及び駆動素子が
オフしたままであり、動作表示灯は完全に消灯する。過
電流保護回路等が働き、出力電圧が所定レベル以下に低
下すると、定電圧素子はオフするが、出力電圧及び充放
電圧回路による駆動素子の間欠的オンにより、動作表示
灯が点滅点灯する。In the operation display circuit of this power supply circuit, when the output voltage of the power supply circuit is above a predetermined level, that is, when it is normal, the constant voltage element turns on, the drive element also turns on accordingly, and the operation indicator light lights up continuously. . When there is no input to the power supply circuit, the output voltage is 0, so the constant voltage element and the drive element remain off, and the operation indicator light is completely turned off. When an overcurrent protection circuit or the like operates and the output voltage drops below a predetermined level, the constant voltage element is turned off, but the operation indicator light flashes on and off due to the intermittent ON of the drive element by the output voltage and charge/discharge voltage circuit.
（ホ）実施例 以下、実施例によりこの発明をさらに詳細に説明する。(e) Examples Hereinafter, this invention will be explained in more detail with reference to Examples.
第１図は、この発明の一実施例を示す電源回路の回路接
続図である。同図において、第３図の回路と同一番号を
付したものは同一のものを示している。トランス２の二
次側にダイオード１４とコンデンサ１５の直列接続が並
列に接続されている。FIG. 1 is a circuit connection diagram of a power supply circuit showing an embodiment of the present invention. In this figure, the same numbers as those in the circuit of FIG. 3 indicate the same components. A series connection of a diode 14 and a capacitor 15 is connected in parallel to the secondary side of the transformer 2.
＋出力端子１２、つまりａ点とダイオード１４とコンデ
ンサ１５の接続点Ｃ間に抵抗２２とツェナダイオード（
定電圧素子）１７が、並列接続され、これにコンデンサ
１６が直列に接続された回路が接続されている。また、
ツェナダイオード１７とコンデンサ１６の接続点にＰＵ
Ｔ（プログラマブル、ユニジャンクション、トランジス
タ）１８のアノードＡが接続され、ＰＵＴｌＢのカソー
ドにが抵抗１９、動作表示灯としてのＬＥＤ９を介して
接続点Ｃに接続されている。また、ＰＵＴｌＢのゲート
Ｇが抵抗２０を介して、出力端子１３、つまりｂ点に接
続されるとともに、抵抗２１を介して接続点Ｃに接続さ
れている。A resistor 22 and a Zener diode (
A constant voltage element) 17 is connected in parallel, and a circuit in which a capacitor 16 is connected in series is connected to this. Also,
PU at the connection point between Zener diode 17 and capacitor 16
An anode A of a T (programmable, unijunction, transistor) 18 is connected, and a cathode of PUTlB is connected to a connection point C via a resistor 19 and an LED 9 as an operation indicator. Further, the gate G of PUTlB is connected to the output terminal 13, that is, point b, via a resistor 20, and to the connection point C via a resistor 21.
次に、上記実施例電源回路の動作を、第２図に示す波形
を参照して説明する。同図では、ｂ点の電位Ｖ、を基準
にしてａ点、０点の電圧■８、■ｏを示している。同図
で示すように、■、は出力電圧で負荷をとり過ぎたり、
短絡してしまった時には低下してしまう（ｔｚ〜ｔ３）
がｖｃは入力電圧が入っている限り、はぼ一定の電圧と
なる。Next, the operation of the power supply circuit of the above embodiment will be explained with reference to the waveforms shown in FIG. In the same figure, voltages (8) and (2) at points a and 0 are shown based on the potential V at point b. As shown in the figure, ■ indicates that the output voltage is overloaded,
If it is short-circuited, it will drop (tz~t3)
However, as long as the input voltage is applied, vc remains an approximately constant voltage.
■入力電圧投入時及び正常出力時（１＋〜ｔｔ）ツェナ
ダイオード１７のツェナ電圧はａｂ間の定格電圧より、
わずかに小さい値に設計されている。そのため、入力電
圧投入時の正常出力電圧ｖ１でツェナダイオード１７は
オンし、コンデンサ１６は充電され、応じてＰＵＴｌＢ
のアノードＡの電位ｖＡはＰＵＴｌＢのゲート電位■。■When the input voltage is applied and when the output is normal (1+ to tt), the zener voltage of the zener diode 17 is from the rated voltage between ab and
Designed to be slightly smaller. Therefore, the Zener diode 17 is turned on at the normal output voltage v1 when the input voltage is applied, the capacitor 16 is charged, and PUTlB
The potential vA of the anode A of is the gate potential of PUTlB.
より高くなり、ＰＵＴｌＢがオンし、ＬＥＤ９が点灯す
る。この時、ＰＵＴｌＢを通してコンデンサ１６の電荷
が放電して、電圧ＶＡが下がるが、ＰＵＴｌＢには保持
電流以上が流れ、ＬＥＤ９は連続点灯する。becomes higher, PUTlB turns on, and LED9 lights up. At this time, the charge in the capacitor 16 is discharged through PUTlB, and the voltage VA decreases, but more than the holding current flows through PUTlB, and the LED 9 lights up continuously.
■出力電圧低下時Ｄｔ−ｔツ）
過電流保護回路が働き、ａ点の電圧■、が下がってくる
と、やがてツェナダイオード１７がオフする。そのため
、電流は抵抗２２を通して流れるもののみとなる。この
時の電流はＰＵＴｌＢの保持電流以下となるように設計
されている。したがってツェナダイオード１７のオフに
応じてＰＵＴｌＢもオフする。それゆえ、この時点以後
、抵抗２２を流れる電流はコンデンサ１６に流れ、コン
デンサ１６を徐々に充電する。やがて、この充電電圧に
よりＰＵＴｌＢのアノード電圧ｖＡがゲート電圧ｖＧを
越えると、ＰＵＴｌＢがオンする。そして、ＬＥＤ９を
パルス的に点灯する。この際、ＰＵＴ９を通してコンデ
ンサ１６が放電し、ＰＵＴｌＢのアノード電圧■１が再
び下がり、ＰＵＴｌＢはオフする。ＰＵＴｌＢがオフす
ると、コンデンサ１６への充電が行われ、アノード電圧
■、が■、を越えると、ＰＵＴｌＢはまたオンし、ＬＥ
Ｄ９もパルス点灯する。以後、同様にしてＰＵＴｌＢは
オン／オフを周期的に繰返し、ＬＥＤ９は点減点灯する
。(Dt-t when the output voltage drops) When the overcurrent protection circuit operates and the voltage at point a decreases, the Zener diode 17 will eventually turn off. Therefore, current only flows through the resistor 22. The current at this time is designed to be equal to or less than the holding current of PUTlB. Therefore, PUT1B is also turned off in response to the Zener diode 17 being turned off. Therefore, from this point on, the current flowing through resistor 22 flows into capacitor 16, gradually charging capacitor 16. Eventually, when the anode voltage vA of PUTlB exceeds the gate voltage vG due to this charging voltage, PUTlB is turned on. Then, the LED 9 is turned on in a pulsed manner. At this time, the capacitor 16 is discharged through the PUT9, the anode voltage 1 of the PUT1B decreases again, and the PUT1B is turned off. When PUTlB turns off, the capacitor 16 is charged, and when the anode voltage exceeds ■, PUTlB turns on again and LE
D9 also lights up in pulses. Thereafter, in the same manner, PUTlB periodically repeats on/off, and the LED 9 lights up in dimming light.
■出力電圧回復時（ｔゴ〜ｔ４）
出力端子１２．１３の短絡又は過負荷がとり除かれると
、ａ点の電圧Ｖ、は上昇し、ツェナダイオード１７が再
度オンし、常にＰＵＴｌＢには、保持電流以上の電流が
流れ、ＬＥＤ９は、連続点灯する。■When the output voltage recovers (t go to t4) When the short circuit or overload on the output terminals 12 and 13 is removed, the voltage V at point a rises, the Zener diode 17 is turned on again, and PUTlB always has A current higher than the holding current flows, and the LED 9 lights up continuously.
■入力端子零時
入力電圧が全く入力されない場合は、当然出力電圧Ｖ、
もＯであり、ツェナダイオード１７はオフ、抵抗２２も
電流が流れず、したがって、ＰＵＴｌＢはオフしたまま
であり、ＬＥＤ９も消灯状態となる。■When the input terminal is zero If no input voltage is input at all, the output voltage V,
is also O, the Zener diode 17 is off, and no current flows through the resistor 22, so PUT1B remains off and the LED 9 is also turned off.
（へ）発明の効果
こρ発明によれば、入力電圧０で出力電圧Ｏの場合は動
作表示灯は全く点灯されず、出力電圧が正常であれば、
動作表示灯は連続点灯され、出力電圧が所定レベル以下
に低下すると動作表示灯が点減点灯となるので、完全に
出力０、短絡・過負荷等の異常、正常の別を確実かつ直
感的に識別できる。しかも、動作表示灯は１個でよいの
で、ユニットパネルのスペースを小さくでき、また動作
表示灯による一次側と二次側の絶縁を気にする必要がな
いという利点がある。(f) Effects of the Invention According to the invention, when the input voltage is 0 and the output voltage is O, the operation indicator light is not turned on at all, and if the output voltage is normal,
The operation indicator light is lit continuously, and when the output voltage drops below a predetermined level, the operation indicator light dims, so you can reliably and intuitively tell whether the output is completely 0, an abnormality such as a short circuit or overload, or normal operation. Can be identified. Moreover, since only one operation indicator light is required, there is an advantage that the space of the unit panel can be reduced and there is no need to worry about insulation between the primary side and the secondary side due to the operation indicator lamp.
第１図は、この発明の一実施例を示す電源回路の回路接
続図、第２図は、同電源回路の動作を説明するための波
形図、第３図枯、第４図及び第５図は従来の電源回路を
示す回路接続図、第６図は、本願発明と従来例の動作比
較をするための波形図である。
９：ＬＥＤ、 １６：コンデンサ、１７
：ツェナダイオード、１８ ： ｐ、［ＪＴ’。
２２：抵抗。
特許出願人 立石電機株式会社代理人 弁理
士 中 村 茂 信
第
図
第
図
第
図
第
ド
手続補正書
（自発）
１゜
２゜
事件の表示
平成１年特許願第８６１２０号
発明の名称
電源回路の動作表示回路
３゜
補正をする者
事件との関係 特許出願人
住所 京都市右京区花園土堂町ｌＯ番地名称 （
２９４）立石電機株式会社代表者 立石義雄
４、代理人
住所
◎６０４
京都市中京区壬生賀陽御所町３番地の１京都室ビル５Ｆ
７、補正の内容
（１）明細書の特許請求の範囲を別紙の通り補正する。
８、添付書類の目録
（１）特許請求の範囲を記載した書面
１通
以
上
６゜
自発補正
補正の対象
く特願平１−８６１２０号〉
２、特許請求の範囲
（１）電源回路の出力側に、電源回路の出力電圧が所定
レベル以上でオンし、所定レベルよりも低くなるとオフ
する定電圧素子と、動作表示灯と、前記定電圧素子がオ
ンしていると、前記動作表示灯を連続点灯させる駆動素
子と、前記定電圧素子がオフすると、前記低下した出力
電圧に応答して前記駆動素子を間欠的にオンして前記動
作表示灯を点滅点灯させる充放電回路とからなる電源回
路勿勉作ｌ水国路
特許出願人 立石電機株式会社代理人 弁理
士 中 村 茂 信Fig. 1 is a circuit connection diagram of a power supply circuit showing an embodiment of the present invention, Fig. 2 is a waveform diagram for explaining the operation of the power supply circuit, Fig. 3 is blank, Figs. 4 and 5 are 6 is a circuit connection diagram showing a conventional power supply circuit, and FIG. 6 is a waveform diagram for comparing the operations of the present invention and the conventional example. 9: LED, 16: Capacitor, 17
: Zener diode, 18 : p, [JT'. 22: Resistance. Patent Applicant: Tateishi Electric Co., Ltd. Agent, Patent Attorney: Shigeru Nakamura Nobuo Nakamura (Voluntary) 1゜2゜Indication of the Case 1999 Patent Application No. 86120 Name of the Invention Power Supply Circuit Relationship with the case of the person making the 3° correction for the operation display circuit Address of the patent applicant 10, Hanazono Tsuchido-cho, Ukyo-ku, Kyoto City Name (
294) Tateishi Electric Co., Ltd. Representative: Yoshio Tateishi 4, Agent address: ◎604 7, Kyoto Muro Building 5F, 3-3 Mibu Kayo Gosho-cho, Nakagyo-ku, Kyoto-shi Contents of amendment (1) Attach the scope of claims to the specification Correct as shown. 8. List of attached documents (1) One or more documents stating the scope of claims 6゜Patent Application No. 1-86120 subject to spontaneous amendment〉 2. Scope of claims (1) Output side of power supply circuit a constant voltage element that turns on when the output voltage of the power supply circuit is equal to or higher than a predetermined level and turns off when it falls below a predetermined level; and an operation indicator light; and when the constant voltage element is on, the operation indicator light is turned on continuously. A power supply circuit consisting of a driving element for lighting, and a charging/discharging circuit for turning on the driving element intermittently in response to the decreased output voltage and blinking the operation indicator when the constant voltage element is turned off. Study Suikokuro Patent Applicant Tateishi Electric Co., Ltd. Agent Patent Attorney Shigeru Nakamura
Claims (1)
レベル以上でオンし、所定レベルよりも低くなるとオフ
する定電圧素子と、動作表示灯と、前記定電圧素子がオ
ンしていると、前記動作表示灯を連続点灯させる駆動素
子と、前記定電圧素子がオフすると、前記低下した出力
電圧に応答して前記駆動素子を間欠的にオンして前記動
作表示灯を点滅点灯させる充放電回路とからなる電源回
路。(1) On the output side of the power supply circuit, there is a constant voltage element that turns on when the output voltage of the power supply circuit is above a predetermined level and turns off when it becomes lower than the predetermined level, an operation indicator light, and the constant voltage element that is turned on. a driving element that turns on the operation indicator light continuously; and a charger that turns on the drive element intermittently in response to the decreased output voltage and turns on the operation indicator lamp when the constant voltage element turns off. A power supply circuit consisting of a discharge circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8612089A JPH02264311A (en) | 1989-04-04 | 1989-04-04 | Operation indication circuit for power circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP8612089A JPH02264311A (en) | 1989-04-04 | 1989-04-04 | Operation indication circuit for power circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02264311A true JPH02264311A (en) | 1990-10-29 |
Family
ID=13877841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP8612089A Pending JPH02264311A (en) | 1989-04-04 | 1989-04-04 | Operation indication circuit for power circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02264311A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004320825A (en) * | 2003-04-10 | 2004-11-11 | Densei Lambda Kk | Power supply |
| JP2006050799A (en) * | 2004-08-05 | 2006-02-16 | Honda Motor Co Ltd | Voltage converter control method |
-
1989
- 1989-04-04 JP JP8612089A patent/JPH02264311A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2004320825A (en) * | 2003-04-10 | 2004-11-11 | Densei Lambda Kk | Power supply |
| JP2006050799A (en) * | 2004-08-05 | 2006-02-16 | Honda Motor Co Ltd | Voltage converter control method |
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