JP2004274897A - Standby power saving power supply device - Google Patents

Standby power saving power supply device Download PDF

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Publication number
JP2004274897A
JP2004274897A JP2003063014A JP2003063014A JP2004274897A JP 2004274897 A JP2004274897 A JP 2004274897A JP 2003063014 A JP2003063014 A JP 2003063014A JP 2003063014 A JP2003063014 A JP 2003063014A JP 2004274897 A JP2004274897 A JP 2004274897A
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Prior art keywords
power supply
voltage
power
relay
circuit
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JP2003063014A
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Japanese (ja)
Inventor
Tomoyori Shimabukuro
朝順 島袋
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Victor Company of Japan Ltd
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Victor Company of Japan Ltd
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Priority to JP2003063014A priority Critical patent/JP2004274897A/en
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Abstract

<P>PROBLEM TO BE SOLVED: To provide a standby power saving power supply device wherein standby power requirement is reduced by a simple constitution and, when commercial power is supplied, a remote controller is constantly kept in standby state. <P>SOLUTION: A commercial power supply is connected with a power transformer 1 through a break contact of a relay 5. A capacitor 12 of a large capacitance is charged during normal operation, and the charged power is used in standby state. When a power off signal is received from the remote controller, direct-current power supply to a main operation portion 4 is interrupted, and further the relay 5 is actuated to disconnect the primary side of the power transformer 1 and the device shifts in a standby state. When the terminal voltage of the capacitor 12 is gradually lowered and the operation of the relay 5 becomes unmaintainable, the contact comes back to supply commercial power to the power transformer 1. Thus, the capacitor 12 is charged. When the charging voltage thereafter becomes a predetermined value, the relay 5 is actuated to disconnect the primary side of the power transformer 1. This operation is repeated to maintain standby state. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【0001】
【発明の属する技術分野】
この発明は、テレビジョン受像機やビデオ、オーディオ機器等の電気機器に係り、特にリモートコントローラで電源のオン・オフを行う機器に用いて好適な電源装置に関するものである。
【0002】
【従来の技術】
テレビジョン受像機やビデオ、オーディオ機器を始めとする最近の家庭用電気機器には、電源のオン、オフをリモート・コントロール装置(以下リモコンと記す)で行うものが多くなっている。このような電気機器では、機器本体の動作は停止状態であっても、リモコン信号の受信部と、その関連の制御回路部は、常に動作状態になっている必要がある。
近年、このような、本体の動作は停止していても、リモコンからの信号を待っている状態(待機状態)で消費する電力(待機電力)が省エネルギーの観点から問題になってきた。
当初の機器では、リモコンによる電源オフのときは、直流電源回路から主動作部への電源供給を遮断するだけで、電源トランス、整流回路、直流電源回路等は、リモコン信号の受信部とその関連の制御回路部を待機状態に保つために、そのまま動作を継続していた。このため、待機状態を維持するのに必要な回路の電力はそれ程多くない場合でも、電源部での電力消費が多く、中でも電源トランスは大型であるため種々のロスを発生し、通電しているだけで電力を消費する問題があった。
そこで、この改良として、待機状態で回路に必要な電源供給は、主電源回路とは別に専用の小型トランスを用いたサブ電源回路で行い、待機状態では主電源回路の電源トランスの一次側を切ることで電力消費を減少する方法がある。
しかし、この方法は、専用の小型トランスや回路部品が必要なため、コストアップやスペースを必要とするなどの欠点があり、また、省待機電力の面からも、まだ十分なものではない状態であった。
【0003】
このような、従来の待機電力削減方法の不具合に対する改善策の公知例として特許文献1がある。
これによれば、待機電力を減少させる手段として、リモコンからの信号で電源をオフにする時は電源トランスの一次側を遮断し、商用電源を使用しない状態にした上で、待機状態で動作する回路の直流電源としては、あらかじめ機器本体が動作時に充電しておいた大容量コンデンサの端子電圧を用いる構成にしたものである。
この方法は、待機状態では全く商用電源を消費しない利点があるが、しかし、このコンデンサの端子電圧は時間と共に徐々に低下するので、待機状態を維持できない電圧まで下がるとリモコンでの操作は出来なくなり、その場合は手動で機器本体の電源スイッチを入れる必要が生ずることになる。この手動で操作する電源スイッチは、電源トランスの一次側(商用電源側)に配置し、スイッチが押されたことで電源オンになり、電源部が動作したならばリレーを動作させ、そのリレーの接点でオンの状態を保持することで、スイッチから手を離してもオンの状態が継続されるという複雑な構成をとらねばならない問題点を有している。
【0004】
また、従来の待機電力削減方法の不具合に対する改善策の別の公知例として特許文献2がある。
これによれば、リモコンによる電源オフのときには直流電源回路から主動作部への電源供給を遮断し、電源トランス、整流回路、直流電源回路等はリモコン信号の受信部とその関連の制御回路部を待機状態に保つために通電しておき、電源トランスの電力ロスを減らすために、電源トランスの一次側を間欠的にオン・オフさせることで実効電圧を下げ、同時に待機状態の回路動作に必要な最小限の駆動電圧まで下げることで、待機回路の電力消費も減少させるという構成のものである。
この方法は、継続して待機状態が保てるが、電源トランスの一次側を間欠的にオン・オフさせるには間欠発振回路やスイッチ素子のサイリスタが必要になるなど、やはり構成が複雑になるという問題点を有している。
【0005】
【特許文献1】
特開2000−125369号公報
【特許文献2】
特開平11−103541号公報
【0006】
【発明が解決しようとする課題】
以上の説明のごとく、従来の省待機電力の手段は、主動作部への電源供給を遮断するのみであるため、待機状態で動作している電源回路の消費電力が大きい問題があり、この改善を図った例では、継続して待機状態を維持できない問題や、複雑な回路構成を用いるなど、それぞれ問題を有している。
したがって、本発明の目的は、簡単な構成で、継続して待機状態を維持できる省待機電力の電源装置を提供することである。
【0007】
【課題を解決するための手段】
本発明は、上記課題を解決する手段として以下の構成からなる。すなわち、
商用電源を利用する電気機器の一部であって、電圧変換用のトランスを有し、外部コントローラからのコントロール信号に応じて動作する電源装置において、前記商用電源が、リレーのブレーク接点を介して一次側巻線に接続される前記トランスと、
前記トランスの二次側巻線の交流電圧を直流電圧に変換する電圧変換回路と、
この電圧変換回路の直流電圧が印加され、電圧の安定化と外部からの制御により直流電圧の主動作部への供給とを行う主電源回路と、
前記電圧変換回路の動作時に、この主電源回路より供給される直流電圧により充電される充電回路と、
前記コントロール信号に応じて動作すると共に、前記充電回路の充電電圧の測定と前記リレーの動作制御と前記主電源回路とをそれぞれ制御する電源制御部とを備え、
前記電源制御部と前記リレーとは、前記電圧変換回路の動作時には前記主電源回路より供給される直流電圧により作動し、前記電圧変換回路の非動作時には前記充電回路の充電電圧により作動する構成である一方、
前記電源制御部において、前記コントロール信号がオフの場合には、前記主電源回路における直流電圧の主動作部への供給を遮断すると共に、前記リレーを動作状態にし、
前記コントロール信号がオンの場合には、前記主電源回路における直流電圧の主動作部への供給を行うと共に、前記リレーを非動作状態にする構成であることを特徴とする省待機電力電源装置。
【0008】
【発明の実施の形態】
以下、本発明の実施の形態につき、好ましい実施例により、図面を参照して説明する。
図1は、この省待機電力電源装置の全体構成を示すブロック図である。
同図において、AC入力端子より入力した100V商用電源は、リレー5のブレーク接点(リレーの非動作時は接続し、動作時は切断される接点)を介して電源トランス1の一次側巻線に接続される。同トランスの二次側巻線には降圧変換された所定の交流電圧が得られ、次いでブリッジ回路を構成したダイオード2で整流されて直流電圧となり主電源回路3へ供給される。主電源回路3に入力された直流電圧は、平滑用のコンデンサ13でリップルを除かれ、内部の定電圧回路によって所定の一定電圧に制御される。一定電圧に制御された直流電圧は、一方は内部のスイッチ回路を経由して主動作部4に供給され、もう一方は(a)点から出力し、図示のごとく、抵抗11や電源制御部9、リレー5の駆動コイルの一方の端子等に接続される。
なお、上記スイッチ回路はトランジスタ14によって開閉が制御されるようになっている。また、上記抵抗11に接続された直流電圧は、大容量のコンデンサ12を充電する。そして、このコンデンサの端子電圧は、電源制御部9の内部のマイコンにより常時測定されており、その電圧値により後述の待機状態の制御に使われる。なお、上記コンデンサ12には、例えば容量が10F(ファラド)程度の電気二重層コンデンサを用いる。
【0009】
次に電源制御部9とその周辺回路の動作を説明する。
まず、機器の初期状態(商用電源が接続されておらずコンデンサ12が充電されていない状態)から商用電源が接続されたときには、主電源回路3の(a)点に直流電圧が発生し、直ちに電源制御部9は動作が可能となり、同時にコンデンサ12の充電が始まる。この状態はリモコンからの信号を待っている待機状態であり、主電源回路3の内部スイッチは切断されていて主動作部4は動作していない。また、リレー5はまだ非動作状態であるが、後述のようにコンデンサ12の充電電圧が所定の値になると動作状態に切り換わる。
【0010】
この状態から、次に機器本体に設置されている電源スイッチ15が押されるか、もしくはリモコン受信部でリモコンからの「電源オン」の信号が受信された場合には、電源制御部9はそれを検知して主電源制御トランジスタ14へ制御信号を供給し、このトランジスタの動作で主電源回路3の内部スイッチを接続状態にする。これにより主動作部4に直流電圧が供給されて機器は動作状態となる。
なお、このときコンデンサ12は継続して充電が行われるが、リレー5はコンデンサ12の充電電圧値にかかわらず非動作を保持する。
【0011】
次に上記の動作状態から、再度電源スイッチ15が押されるか、もしくはリモコン受信部でリモコンからの「電源オフ」の信号が受信された場合には、電源制御部9はそれを検知して次の2つの制御を行う。
1つは、主電源制御トランジスタ14への制御信号の供給を止め、これにより主電源回路3の内部スイッチを切断状態にし、主動作部4への直流電圧の供給を断って機器の動作を停止させること。もう1つは、トランジスタ6に制御信号を供給してリレー5を動作させ、商用電源が接続されているブレーク接点を切り離し、電源トランス1への商用電源の供給を遮断することである。
上記リレー5の動作により電源トランス1への商用電源が切れると、主電源回路3の(a)点には直流電圧が現れなくなるが、代わりにコンデンサ12の端子電圧がダイオード10を経て供給されるようになり、この電圧がここに接続されている回路の動作用電源となり、リモコンの待機状態が継続される。
なお、トランジスタ8と抵抗7の回路は、リレー5の動作後にトランジスタ6の回路と切り換えることでリレー5の動作保持電流を減少させるものである。
【0012】
この待機状態がしばらく続くと、コンデンサ12の端子電圧は次第に減少してくる。そして更に電圧が下がると、電源制御部9やリモコン受信部16は動作をしていても、リレー5は動作が保持できず、その結果接点が自然に戻ることになる。接点が戻ると商用電源が接続され、主電源回路3の(a)点に直流電圧が現れてコンデンサ12への充電が始まる。
このとき、電源制御部9がトランジスタ8に制御信号を供給したままでは、すぐにリレー5が動作をしてしまい、頻繁に切り換えが起きる不具合が生じる。そこで電源制御部9では、このように直流電源電圧が急激に上昇したこと、あるいは直流電源電圧とコンデンサ12の端子電圧との差が大きいことを検知してトランジスタ8(あるいはトランジスタ6)への制御信号の供給をリセットするようにしておく必要がある。
次いで、しだいにコンデンサ12への充電が進み、端子電圧が直流電源電圧の90%程度になったとき、電源制御部9はトランジスタ6に制御信号を供給し、リレー5を動作状態に切り換える。これにより、リレー5の接点は切断され、商用電源は電源トランス1に供給されなくなる。そして、再びコンデンサ12の端子電圧が待機中の動作用直流電源として使用される。
待機状態では、以上の動作が繰り返されるが、商用電源が供給されている時間は全体に対して極めて短いので平均の電力消費は少なく、また、電源トランス自体による電力ロスも少なくなり省待機電力が達成できる。
【0013】
なお、本実施例では、待機状態でコンデンサ12の端子電圧が低下したときには、リレー5が自然に動作保持できなくなり、接点が戻るような構成にしているが、この方法に限ることなく、電源制御部9がコンデンサ12の端子電圧を監視しているので、所定の電圧に下がったことでトランジスタ8(あるいはトランジスタ6)への制御信号の供給を止めてリレー5の動作を停止しても良い。
また、主電源回路3から主動作部4への電源供給を1つの直流電源として説明したが、機器により複数の電圧を使用する場合には、それぞれに電圧生成部と内部スイッチを設け、本実施例と同様な制御を行えば良い。
【0014】
【発明の効果】
以上説明したように、本発明に係る請求項1記載の省待機電力電源装置によれば、商用電源をリレーのブレーク接点を介して電源トランスの一次側に接続することにより、この部分に手動用の電源スイッチが不要となる利点を有する。
また、待機状態を維持するコンデンサの電圧が下がった場合には、リレー動作が切れることで電源トランスの一次側が接続される構成であるから、例えば長い停電やコンセントから電源プラグを抜いた場合などでも、復帰すれば自動的に待機状態になるため、すぐにリモコンが働く特徴がある。
更に、省待機電力化のために複雑な回路を用いることもなく、また、コンデンサの容量を大きくすれば放電間隔を長くすることが出来るので、電源トランスの一次側を接続する回数が減少し、より待機電力を減らすことが可能である等の効果を奏する。
【図面の簡単な説明】
【図1】本発明に係る一実施例の全体構成を示すブロック図である。
【符号の説明】
1…電源トランス、2…ダイオード、3…主電源回路、4…主動作部、
5…リレー、6、8…トランジスタ、7…抵抗、9…電源制御部、
10…ダイオード、11…抵抗、12、13…コンデンサ、
14…主電源制御トランジスタ、15…電源スイッチ、16…リモコン受信部
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to an electric device such as a television receiver, a video and an audio device, and more particularly to a power supply device suitable for use in a device for turning on / off a power supply by a remote controller.
[0002]
[Prior art]
2. Description of the Related Art In recent home electric appliances such as television receivers, video and audio equipment, the power supply is turned on and off by a remote control device (hereinafter referred to as a remote control) in many cases. In such an electric device, even when the operation of the device main body is stopped, the remote control signal receiving unit and the related control circuit unit need to be always in the operating state.
In recent years, even when the operation of the main body is stopped, power consumed in a state of waiting for a signal from a remote controller (standby state) (standby power) has become a problem from the viewpoint of energy saving.
In the original equipment, when the power was turned off by the remote control, only the power supply from the DC power supply circuit to the main operation unit was cut off, and the power transformer, rectifier circuit, DC power supply circuit, etc. In order to keep the control circuit section in the standby state, the operation was continued as it was. For this reason, even if the power of the circuit required to maintain the standby state is not so large, the power consumption in the power supply unit is large, and in particular, since the power transformer is large, various losses occur and the power is supplied. There was a problem of only consuming power.
Therefore, as an improvement, the power supply required for the circuit in the standby state is performed by a sub power supply circuit using a dedicated small transformer separately from the main power supply circuit, and in the standby state, the primary side of the power supply transformer of the main power supply circuit is cut off There are ways to reduce power consumption.
However, this method has disadvantages such as an increase in cost and space due to the necessity of a dedicated small transformer and circuit components.Also, from a standpoint of saving standby power, it is still insufficient. there were.
[0003]
Japanese Patent Application Laid-Open Publication No. HEI 10-163566 discloses a known example of a measure for remedying such a problem of the conventional standby power reduction method.
According to this, as a means for reducing the standby power, when the power is turned off by a signal from the remote controller, the primary side of the power transformer is shut off, the commercial power is not used, and the operation is performed in the standby state. As the DC power supply for the circuit, the terminal voltage of a large-capacity capacitor that has been charged before the operation of the device body is used.
This method has the advantage of not consuming commercial power at all in the standby state, but since the terminal voltage of this capacitor gradually decreases over time, operation with the remote control becomes impossible if the voltage drops to a level where the standby state cannot be maintained. In such a case, it is necessary to manually turn on the power switch of the device body. This manually operated power switch is located on the primary side (commercial power side) of the power transformer, and when the switch is pressed, the power is turned on. When the power supply is activated, the relay is activated. There is a problem that maintaining the ON state at the contact point requires a complicated configuration in which the ON state is maintained even when the hand is released from the switch.
[0004]
Japanese Patent Application Laid-Open No. H11-163873 discloses another known example of a measure for remedying a problem with the conventional standby power reduction method.
According to this, when the power is turned off by the remote control, the power supply from the DC power supply circuit to the main operation unit is shut off, and the power transformer, the rectifier circuit, the DC power supply circuit, and the like connect the remote control signal receiving unit and its related control circuit unit. Power is supplied to maintain the standby state, and the effective voltage is reduced by intermittently turning on and off the primary side of the power transformer to reduce the power loss of the power transformer. By reducing the driving voltage to the minimum, the power consumption of the standby circuit is also reduced.
With this method, the standby state can be maintained continuously, but the structure is still complicated, for example, an intermittent oscillation circuit and a thyristor of a switch element are required to intermittently turn on and off the primary side of the power transformer. Have a point.
[0005]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 2000-125369 [Patent Document 2]
JP-A-11-103541
[Problems to be solved by the invention]
As described above, since the conventional standby power saving means only shuts off the power supply to the main operation unit, there is a problem that the power consumption of the power supply circuit operating in the standby state is large. In the example of the above, there are problems such as a problem that the standby state cannot be maintained continuously and a complicated circuit configuration.
SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to provide a standby power saving power supply device that can maintain a standby state with a simple configuration.
[0007]
[Means for Solving the Problems]
The present invention has the following arrangement as means for solving the above-mentioned problems. That is,
In a power supply device that is a part of an electric device that uses a commercial power supply, has a transformer for voltage conversion, and operates according to a control signal from an external controller, the commercial power supply is connected via a break contact of a relay. Said transformer connected to the primary winding;
A voltage conversion circuit that converts an AC voltage of the secondary winding of the transformer into a DC voltage,
A main power supply circuit to which a DC voltage of the voltage conversion circuit is applied, and which performs stabilization of the voltage and supply of the DC voltage to the main operation unit by external control;
A charging circuit that is charged by a DC voltage supplied from the main power supply circuit during operation of the voltage conversion circuit;
A power supply control unit that operates in accordance with the control signal and controls a measurement of a charging voltage of the charging circuit, an operation control of the relay, and the main power supply circuit, respectively.
The power supply control unit and the relay are configured to operate by the DC voltage supplied from the main power supply circuit when the voltage conversion circuit operates, and to operate by the charging voltage of the charging circuit when the voltage conversion circuit is not operating. While
In the power supply control unit, when the control signal is off, cut off supply of a DC voltage to the main operation unit in the main power supply circuit, and put the relay into an operation state,
When the control signal is ON, the DC voltage in the main power supply circuit is supplied to a main operation unit, and the relay is set to a non-operation state.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings by way of preferred examples.
FIG. 1 is a block diagram showing an overall configuration of the standby power saving power supply device.
In the figure, 100 V commercial power input from the AC input terminal is applied to the primary winding of the power transformer 1 via a break contact of the relay 5 (a contact that is connected when the relay is not operating and is disconnected when the relay is operating). Connected. A predetermined step-down converted AC voltage is obtained in the secondary winding of the transformer, and is then rectified by the diode 2 forming the bridge circuit to become a DC voltage and supplied to the main power supply circuit 3. The DC voltage input to the main power supply circuit 3 is filtered out by a smoothing capacitor 13 and controlled to a predetermined constant voltage by an internal constant voltage circuit. One of the DC voltages controlled to a constant voltage is supplied to the main operation unit 4 via an internal switch circuit, and the other is output from a point (a). And one terminal of the drive coil of the relay 5.
The opening and closing of the switch circuit is controlled by the transistor 14. The DC voltage connected to the resistor 11 charges a large-capacity capacitor 12. The terminal voltage of the capacitor is constantly measured by a microcomputer inside the power supply control unit 9, and is used for controlling a standby state described later based on the voltage value. The capacitor 12 is, for example, an electric double layer capacitor having a capacity of about 10 F (Farad).
[0009]
Next, the operation of the power supply controller 9 and its peripheral circuits will be described.
First, when a commercial power supply is connected from the initial state of the device (a state where the commercial power supply is not connected and the capacitor 12 is not charged), a DC voltage is generated at a point (a) of the main power supply circuit 3 and immediately. The power supply control unit 9 becomes operable, and at the same time, charging of the capacitor 12 starts. This state is a standby state waiting for a signal from the remote controller. The internal switch of the main power supply circuit 3 is turned off, and the main operation section 4 is not operating. Further, the relay 5 is still in a non-operation state, but switches to an operation state when the charging voltage of the capacitor 12 reaches a predetermined value as described later.
[0010]
In this state, when the power switch 15 provided on the main body of the apparatus is next pressed or the “power-on” signal is received from the remote control by the remote control receiving unit, the power control unit 9 resets the signal. Upon detection, a control signal is supplied to the main power supply control transistor 14, and the operation of this transistor turns on the internal switch of the main power supply circuit 3. As a result, the DC voltage is supplied to the main operation unit 4 and the device enters an operation state.
At this time, the capacitor 12 is continuously charged, but the relay 5 is kept inactive regardless of the charged voltage value of the capacitor 12.
[0011]
Next, when the power switch 15 is pressed again from the above operation state, or when a “power off” signal is received from the remote control by the remote control receiving unit, the power control unit 9 detects the signal and detects the next signal. Are performed.
One is to stop supplying the control signal to the main power supply control transistor 14, thereby turning off the internal switch of the main power supply circuit 3, and stopping the supply of the DC voltage to the main operation unit 4 to stop the operation of the device. Let it. The other is to supply a control signal to the transistor 6 to operate the relay 5, disconnect the break contact to which the commercial power is connected, and cut off the supply of the commercial power to the power transformer 1.
When the commercial power supply to the power transformer 1 is cut off by the operation of the relay 5, no DC voltage appears at the point (a) of the main power supply circuit 3, but the terminal voltage of the capacitor 12 is supplied via the diode 10 instead. As a result, this voltage becomes the power supply for operating the circuit connected thereto, and the standby state of the remote controller is continued.
In addition, the circuit of the transistor 8 and the resistor 7 reduces the operation holding current of the relay 5 by switching to the circuit of the transistor 6 after the operation of the relay 5.
[0012]
When this standby state continues for a while, the terminal voltage of the capacitor 12 gradually decreases. When the voltage further decreases, the relay 5 cannot maintain the operation even though the power supply control unit 9 and the remote control receiving unit 16 are operating, and as a result, the contact returns naturally. When the contact returns, the commercial power supply is connected, a DC voltage appears at point (a) of the main power supply circuit 3, and charging of the capacitor 12 starts.
At this time, if the power supply control unit 9 continues to supply the control signal to the transistor 8, the relay 5 operates immediately, which causes a problem that frequent switching occurs. Therefore, the power supply control unit 9 detects that the DC power supply voltage has risen rapidly or that the difference between the DC power supply voltage and the terminal voltage of the capacitor 12 is large, and controls the transistor 8 (or transistor 6). It is necessary to reset the signal supply.
Next, when the charging of the capacitor 12 gradually proceeds and the terminal voltage becomes about 90% of the DC power supply voltage, the power supply control unit 9 supplies a control signal to the transistor 6 and switches the relay 5 to the operating state. As a result, the contact of the relay 5 is disconnected, and commercial power is no longer supplied to the power transformer 1. Then, the terminal voltage of the capacitor 12 is used again as a standby operation DC power supply.
In the standby state, the above operation is repeated.However, since the time during which the commercial power is supplied is extremely short, the average power consumption is small, and the power loss due to the power transformer itself is reduced, and the standby power saving is reduced. Can be achieved.
[0013]
In this embodiment, when the terminal voltage of the capacitor 12 drops in the standby state, the relay 5 cannot operate and hold naturally and the contact returns. However, the present invention is not limited to this method. Since the unit 9 monitors the terminal voltage of the capacitor 12, the supply of the control signal to the transistor 8 (or the transistor 6) may be stopped and the operation of the relay 5 may be stopped when the voltage drops to a predetermined voltage.
Further, the power supply from the main power supply circuit 3 to the main operation unit 4 has been described as one DC power supply. However, when a plurality of voltages are used by a device, a voltage generation unit and an internal switch are provided for each device, and Control similar to the example may be performed.
[0014]
【The invention's effect】
As described above, according to the first aspect of the present invention, the commercial power supply is connected to the primary side of the power transformer via the break contact of the relay, so that a manual power supply can be connected to this part. This has the advantage that the power switch is unnecessary.
In addition, when the voltage of the capacitor that maintains the standby state drops, the primary side of the power transformer is connected by switching off the relay operation. There is a feature that the remote control works immediately because it automatically enters the standby state when it returns.
Furthermore, since a complicated circuit is not used for saving standby power, and the discharge interval can be lengthened by increasing the capacity of the capacitor, the number of times of connecting the primary side of the power transformer is reduced, There are effects such as the ability to further reduce standby power.
[Brief description of the drawings]
FIG. 1 is a block diagram showing an overall configuration of an embodiment according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Power transformer, 2 ... Diode, 3 ... Main power supply circuit, 4 ... Main operation part,
5 relay, 6, 8 transistor, 7 resistor, 9 power control unit
10 ... diode, 11 ... resistance, 12, 13 ... capacitor,
14: Main power control transistor, 15: Power switch, 16: Remote control receiver

Claims (1)

商用電源を利用する電気機器の一部であって、電圧変換用のトランスを有し、外部コントローラからのコントロール信号に応じて動作する電源装置において、前記商用電源が、リレーのブレーク接点を介して一次側巻線に接続される前記トランスと、
前記トランスの二次側巻線の交流電圧を直流電圧に変換する電圧変換回路と、
この電圧変換回路の直流電圧が印加され、電圧の安定化と外部からの制御により直流電圧の主動作部への供給とを行う主電源回路と、
前記電圧変換回路の動作時に、この主電源回路より供給される直流電圧により充電される充電回路と、
前記コントロール信号に応じて動作すると共に、前記充電回路の充電電圧の測定と前記リレーの動作制御と前記主電源回路とをそれぞれ制御する電源制御部とを備え、
前記電源制御部と前記リレーとは、前記電圧変換回路の動作時には前記主電源回路より供給される直流電圧により作動し、前記電圧変換回路の非動作時には前記充電回路の充電電圧により作動する構成である一方、
前記電源制御部において、前記コントロール信号がオフの場合には、前記主電源回路における直流電圧の主動作部への供給を遮断すると共に、前記リレーを動作状態にし、
前記コントロール信号がオンの場合には、前記主電源回路における直流電圧の主動作部への供給を行うと共に、前記リレーを非動作状態にする構成であることを特徴とする省待機電力電源装置。
In a power supply device that is a part of an electric device that uses a commercial power supply, has a transformer for voltage conversion, and operates according to a control signal from an external controller, the commercial power supply is connected via a break contact of a relay. Said transformer connected to the primary winding;
A voltage conversion circuit that converts an AC voltage of the secondary winding of the transformer into a DC voltage,
A main power supply circuit to which a DC voltage of the voltage conversion circuit is applied, and which performs stabilization of the voltage and supply of the DC voltage to the main operation unit by external control;
A charging circuit that is charged by a DC voltage supplied from the main power supply circuit during operation of the voltage conversion circuit;
A power supply control unit that operates in accordance with the control signal and controls a measurement of a charging voltage of the charging circuit, an operation control of the relay, and the main power supply circuit, respectively.
The power supply control unit and the relay are configured to operate by the DC voltage supplied from the main power supply circuit when the voltage conversion circuit operates, and to operate by the charging voltage of the charging circuit when the voltage conversion circuit is not operating. While
In the power supply control unit, when the control signal is off, cut off supply of a DC voltage to the main operation unit in the main power supply circuit, and put the relay into an operation state,
When the control signal is ON, the DC voltage in the main power supply circuit is supplied to a main operation unit, and the relay is set to a non-operation state.
JP2003063014A 2003-03-10 2003-03-10 Standby power saving power supply device Pending JP2004274897A (en)

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KR100934970B1 (en) * 2009-06-19 2010-01-06 김창호 Apparatus and method for reducing power consumption of electronic products
KR100967438B1 (en) 2009-11-02 2010-07-01 코칩 주식회사 Standby power reduction device
JP2010268255A (en) * 2009-05-15 2010-11-25 Sanyo Electric Co Ltd Power supply control system of electronic equipment
JP2011071810A (en) * 2009-09-28 2011-04-07 Toshiba Corp Power controller, electronic apparatus and power supply control method
EP2372869A2 (en) 2010-03-31 2011-10-05 Kabushiki Kaisha Toshiba Power control apparatus and power control method
WO2011122674A1 (en) * 2010-03-30 2011-10-06 マスプロ電工株式会社 Power source of television broadcast signal transmitter and television broadcast signal transmitting system
JP2012010468A (en) * 2010-06-23 2012-01-12 Toshiba Corp Electronic apparatus and power supply controller
JP2012055165A (en) * 2011-12-13 2012-03-15 Toshiba Corp Electronic apparatus
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Cited By (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2010268255A (en) * 2009-05-15 2010-11-25 Sanyo Electric Co Ltd Power supply control system of electronic equipment
WO2010147298A1 (en) * 2009-06-19 2010-12-23 Chang Ho Kim Apparatus and method for reducing power consumption of electronic product
KR100934970B1 (en) * 2009-06-19 2010-01-06 김창호 Apparatus and method for reducing power consumption of electronic products
JP2011071810A (en) * 2009-09-28 2011-04-07 Toshiba Corp Power controller, electronic apparatus and power supply control method
KR100967438B1 (en) 2009-11-02 2010-07-01 코칩 주식회사 Standby power reduction device
WO2011052924A3 (en) * 2009-11-02 2011-06-23 코칩 주식회사 Standby power reduction device
WO2011122674A1 (en) * 2010-03-30 2011-10-06 マスプロ電工株式会社 Power source of television broadcast signal transmitter and television broadcast signal transmitting system
EP2372869A2 (en) 2010-03-31 2011-10-05 Kabushiki Kaisha Toshiba Power control apparatus and power control method
JP2012010468A (en) * 2010-06-23 2012-01-12 Toshiba Corp Electronic apparatus and power supply controller
EP2408088A2 (en) 2010-06-23 2012-01-18 Kabushiki Kaisha Toshiba Electronic apparatus and power control device
EP2408088A3 (en) * 2010-06-23 2014-11-26 Kabushiki Kaisha Toshiba Electronic apparatus and power control device
JP2012055165A (en) * 2011-12-13 2012-03-15 Toshiba Corp Electronic apparatus
CN104362728A (en) * 2014-10-17 2015-02-18 国家电网公司 Power loss control device of full-aperture power generation data collecting system

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