JPH067373Y2 - Power supply circuit - Google Patents
Power supply circuitInfo
- Publication number
- JPH067373Y2 JPH067373Y2 JP1984169226U JP16922684U JPH067373Y2 JP H067373 Y2 JPH067373 Y2 JP H067373Y2 JP 1984169226 U JP1984169226 U JP 1984169226U JP 16922684 U JP16922684 U JP 16922684U JP H067373 Y2 JPH067373 Y2 JP H067373Y2
- Authority
- JP
- Japan
- Prior art keywords
- load
- power supply
- circuit
- voltage
- output side
- 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.)
- Expired - Lifetime
Links
Description
【考案の詳細な説明】 〔考案の利用分野〕 本考案は、電源の負荷変動に対し電源電圧の変動を抑え
る電源回路に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Use of the Invention] The present invention relates to a power supply circuit that suppresses fluctuations in power supply voltage with respect to fluctuations in load of a power supply.
従来電源電圧の変動を抑えるようにした電源回路ではツ
ェナーダイオード等の定電圧素子を使用し、この定電圧
素子から得られる安定な電圧を負荷に供給している。し
かしこの定電圧素子を使用した定電圧回路には常時負荷
が接続され、この負荷が無負荷や軽い負荷の時でも定電
圧回路に電流が流れていたため、電源の効率が悪いとい
う欠点があった。Conventionally, a power supply circuit that suppresses fluctuations in the power supply voltage uses a constant voltage element such as a Zener diode, and supplies a stable voltage obtained from this constant voltage element to a load. However, a constant-voltage circuit using this constant-voltage element was always connected to a load, and current was flowing through the constant-voltage circuit even when this load was no load or light load. .
そこで本考案の目的は、無負荷や、軽い負荷の時の電源
の効率を上げる電源回路を得るものである。Then, the objective of this invention is to obtain the power supply circuit which raises the efficiency of a power supply at the time of no load or a light load.
〔考案の概要〕 そのため、無負荷や軽い負荷の場合は電源電圧の変動は
微小である点に着目し、無負荷や軽い負荷の場合は、定
電圧回路を通さない様にし重負荷時は、電源の電圧降下
を補正することにより、電源の効率を上げるものであ
る。[Summary of device] Therefore, paying attention to the fact that the fluctuation of the power supply voltage is minute in the case of no load or light load, and in the case of no load or light load, do not pass the constant voltage circuit, By correcting the voltage drop of the power supply, the efficiency of the power supply is increased.
以下、本考案の電源回路の一実施例を図によって説明す
る。第１図に本考案の電源回路のブロック図を示す。第
１図において１は直流電源２はツェナーダイオード等を
使用した定電圧回路、３は負荷、５は切換スイッチ、６
は電圧補正回路、７はスイッチ制御信号入力端子であ
る。スイッチ５は電源１の電力を定電圧回路２を通して
負荷３に供給するか、あるいは電圧補正回路６を通して
負荷３に供給するかを切換るためのもので、端子７に供
給されるスイッチ制御信号によって制御される。このよ
うな回路で負荷３が小さい時や無負荷の時端子７に供給
されるスイッチ制御信号がＯＦＦとなりスイッチ５は端
子ａの方につながり電圧補正回路６により電圧が補正さ
れる。ここで電圧補正回路６の出力電圧は定電圧回路２
の出力電圧と同様になる。次に負荷３が大きい時は端子
７に供給されるスイッチ制御信号がＯＮとなりスイッチ
５は端子６の方につながり電源１の電力は定電圧回路２
を通して負荷３に供給される。そして出力電圧を一定と
する。これにより負荷が小さい時や無負荷の時も電源効
率が低下しない。第２図に本考案を応用した具体的な回
路例を示す。軽負荷時は、端子７に供給されるスイッチ
制御信号はＬであるためソレノイド８に電流が流れない
為スイッチ５は端子ａの方につながり、電源１の電圧は
電圧補正回路６の複数のダイオード９により電圧が補正
され、負荷３に供給される。次に負荷３が大きくなると
スイッチ制御信号がＨになりソレノイド８に制御信号が
流れるためスイッチ５はｂの方につながり、電源１の電
圧は電圧安定化回路２によって一定電圧となって負荷３
に供給される。尚本実施例はスイッチング回路にリレ
ー、電圧補正回路にダイオードを用いたが、該回路の詳
細及び方法については、特に本考案の中では限定しな
い。要は、無負荷及び軽い負荷の時は、電圧補正回路を
通し、負荷が大きくなると電圧安定化回路を通る様にス
イッチニグ回路で切換えるものである。An embodiment of the power supply circuit of the present invention will be described below with reference to the drawings. FIG. 1 shows a block diagram of the power supply circuit of the present invention. In FIG. 1, 1 is a DC power supply 2, 2 is a constant voltage circuit using a Zener diode or the like, 3 is a load, 5 is a changeover switch, 6
Is a voltage correction circuit, and 7 is a switch control signal input terminal. The switch 5 is for switching between supplying the power of the power source 1 to the load 3 through the constant voltage circuit 2 or supplying the load 3 through the voltage correction circuit 6, and is controlled by a switch control signal supplied to the terminal 7. Controlled. In such a circuit, when the load 3 is small or no load is applied, the switch control signal supplied to the terminal 7 is turned off, the switch 5 is connected to the terminal a, and the voltage is corrected by the voltage correction circuit 6. Here, the output voltage of the voltage correction circuit 6 is the constant voltage circuit 2
It becomes the same as the output voltage of. Next, when the load 3 is large, the switch control signal supplied to the terminal 7 is turned on, the switch 5 is connected to the terminal 6, and the power of the power supply 1 is constant voltage circuit 2.
Is supplied to the load 3 through. Then, the output voltage is made constant. As a result, the power supply efficiency does not decrease even when the load is small or no load is applied. FIG. 2 shows a concrete circuit example to which the present invention is applied. When the load is light, the switch control signal supplied to the terminal 7 is L, so that no current flows through the solenoid 8, so the switch 5 is connected to the terminal a, and the voltage of the power supply 1 is the plurality of diodes of the voltage correction circuit 6. The voltage is corrected by 9 and supplied to the load 3. Next, when the load 3 becomes large, the switch control signal becomes H and the control signal flows to the solenoid 8, so that the switch 5 is connected to b, and the voltage of the power source 1 becomes a constant voltage by the voltage stabilizing circuit 2 and the load 3
Is supplied to. In this embodiment, a relay is used for the switching circuit and a diode is used for the voltage correction circuit, but the details and method of the circuit are not particularly limited in the present invention. The point is that the switch nig circuit switches the voltage through the voltage correction circuit when there is no load or light load, and through the voltage stabilization circuit when the load increases.
本考案によれば、電源回路において、スイッチング手段
を定電圧回路の電源側に設けたことにより、負荷が変動
し電源が電圧変動を起した時、従来の様にレギュレータ
などで定電圧化すると軽負荷時の無効電流による損失が
無視出来なくなる様な場合に軽負荷時は直接電圧を補正
して供給し、重負荷時はレギュレータを用いて定電圧化
する様にスイッチングする事で、両状態において良好な
電源供給が出来る。According to the present invention, in the power supply circuit, the switching means is provided on the power supply side of the constant voltage circuit. When the loss due to the reactive current at the time of load cannot be ignored, the voltage is directly corrected and supplied at the time of the light load, and at the time of the heavy load, the regulator is used to switch the voltage to a constant voltage. Good power supply is possible.
第１図は本考案の電源回路の一実施例を示すブロック
図、第２図は本考案の電源回路の具体的な回路図であ
る。 １……電源、２……電圧安定化回路 ３……負荷、４……無効電流 ５……スイッチング回路、６……電圧補正回路 ７……スイッチ制御信号端子、８……ソレノイド ９……ダイオードFIG. 1 is a block diagram showing an embodiment of the power supply circuit of the present invention, and FIG. 2 is a concrete circuit diagram of the power supply circuit of the present invention. 1 ... Power supply, 2 ... Voltage stabilizing circuit 3 ... Load, 4 ... Reactive current 5 ... Switching circuit, 6 ... Voltage correction circuit 7 ... Switch control signal terminal, 8 ... Solenoid 9 ... Diode
Claims (1)
側の間で切り換えて、何れか一方の出力側へ供給するこ
とのできるスイッチ手段と、 前記スイッチ手段の前記第１の出力側を定電圧回路を介
さずに負荷へ接続する第１の電気接続路と、 前記スイッチ手段の前記第２の出力側を定電圧回路を介
して負荷へ接続する第２の電気接続路と、 前記負荷が軽いか重いかを判別し、軽いときは前記スイ
ッチ手段において、電源を第１の出力側へ接続し、重い
ときは前記スイッチ手段において、電源を第２の出力側
へ接続するスイッチの切換制御手段と、 を具備したことを特徴とする電源回路。1. In a power supply circuit, a switch means capable of switching a power supply connected to an input side between a first output side and a second output side and supplying to one of the output sides. A first electrical connection path connecting the first output side of the switch means to a load without a constant voltage circuit, and the second output side of the switch means to a load via a constant voltage circuit The second electric connection path to be connected and whether the load is light or heavy are discriminated. When the load is light, the power source is connected to the first output side in the switch means, and when the load is heavy, the power source is switched in the switch means A switching control means for a switch connected to the second output side, and a power supply circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984169226U JPH067373Y2 (en) | 1984-11-09 | 1984-11-09 | Power supply circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984169226U JPH067373Y2 (en) | 1984-11-09 | 1984-11-09 | Power supply circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6184923U JPS6184923U (en) | 1986-06-04 |
| JPH067373Y2 true JPH067373Y2 (en) | 1994-02-23 |
Family
ID=30726974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984169226U Expired - Lifetime JPH067373Y2 (en) | 1984-11-09 | 1984-11-09 | Power supply circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH067373Y2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6264646B2 (en) * | 2014-01-31 | 2018-01-24 | ブラザー工業株式会社 | Printing device |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS412906Y1 (en) * | 1964-09-22 | 1966-02-21 |
-
1984
- 1984-11-09 JP JP1984169226U patent/JPH067373Y2/en not_active Expired - Lifetime
Non-Patent Citations (1)
| Title |
|---|
| 発明協会公開技報公技番号７７−２１８ |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6184923U (en) | 1986-06-04 |
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