JPS6210808Y2 - - Google Patents
Info
- Publication number
- JPS6210808Y2 JPS6210808Y2 JP1977135027U JP13502777U JPS6210808Y2 JP S6210808 Y2 JPS6210808 Y2 JP S6210808Y2 JP 1977135027 U JP1977135027 U JP 1977135027U JP 13502777 U JP13502777 U JP 13502777U JP S6210808 Y2 JPS6210808 Y2 JP S6210808Y2
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- voltage
- filter circuit
- reference voltage
- current
- 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
Links
- 238000009499 grossing Methods 0.000 description 5
- 239000003990 capacitor Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000020169 heat generation Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 206010047571 Visual impairment Diseases 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003292 diminished effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
Landscapes
- Continuous-Control Power Sources That Use Transistors (AREA)
- Dc-Dc Converters (AREA)
Description
【考案の詳細な説明】
本考案は断続電流で駆動できる負荷を備えた電
気機器の回路に関し、供給電圧の大幅な変化に耐
える電気機器の回路を得ることを目的としてい
る。[Detailed Description of the Invention] The present invention relates to a circuit for an electrical device having a load that can be driven with intermittent current, and an object of the present invention is to obtain a circuit for an electrical device that can withstand large changes in supply voltage.
赤外線監視装置など屋外において低電圧の電源
から電力の供給を受けて使用される電気機器は、
配線による電圧降下の影響により供給電圧の変動
が大きかつたり、供給電圧を高めて使用されたり
するため、許容電圧範囲の広いものが要求され
る。従つて監視装置などの電気機器自体に電源電
圧安定性が必要となり、各種の電圧安定回路が内
蔵されているが、直列方式など電源電圧が上昇し
たときに消費電流が増えるタイプのものは電源電
圧を上昇させたときその分だけ配線の電圧降下が
増加して電源電圧を上昇させた効果が減殺され
る。このためスイツチングレギユレータと呼ばれ
ているスイツチ手段を用いた電圧安定方式が有望
視される。この方式では電源を１度チヨツピング
し、そのチヨツピングの幅や周期を変えて出力電
圧を安定させており、電圧が上昇したときには流
入電流が減少し、電圧が下降したときには流入電
流が増加するという極めて有利な性質をもつてい
る。しかしながら何分スイツチ手段により直流電
源をチヨツピングする方式のため、得られる直流
出力に脈流分が多く含まれ、良質な電源を得よう
とすれば平滑を十分にするためのフイルタ回路が
必要になる。その場合抵抗とコンデンサによる簡
単なフイルタ回路を使用すればフイルタ回路中の
抵抗により電力が無駄に消費されて効率が低下し
発熱も大きくなる。このため負荷を一括してこれ
に良質な電源を与えようとすれば、フイルタ回路
に大型で高価な平滑用インダクタンスが必要とな
る。 Electrical equipment such as infrared monitoring equipment that is used outdoors and is supplied with power from a low-voltage power source,
Since the supply voltage fluctuates greatly due to the influence of voltage drop due to wiring, and the supply voltage is used at a higher level, a device with a wide allowable voltage range is required. Therefore, electrical equipment such as monitoring equipment itself requires power supply voltage stability, and various voltage stabilization circuits are built in. However, types such as series systems that consume more current when the power supply voltage rises are limited to power supply voltage. When the power supply voltage is increased, the voltage drop in the wiring increases by that amount, and the effect of increasing the power supply voltage is diminished. For this reason, a voltage stabilization method using switching means called a switching regulator is considered promising. In this method, the power supply is stepped once, and the output voltage is stabilized by changing the width and period of the stepping. When the voltage rises, the inflow current decreases, and when the voltage falls, the inflow current increases. It has advantageous properties. However, since the DC power supply is stepped by a minute switch, the resulting DC output contains a large amount of pulsating current, and in order to obtain a high-quality power supply, a filter circuit is required to ensure sufficient smoothing. . In that case, if a simple filter circuit consisting of a resistor and a capacitor is used, the resistance in the filter circuit wastes power, reducing efficiency and increasing heat generation. For this reason, if a high-quality power source is to be supplied to all loads at once, a large and expensive smoothing inductance is required in the filter circuit.
一方電気機器内部には、それ自身平滑作用をも
つている部分や平滑された電源の供給が必要でな
い部分と平滑された電源の供給が不可欠な部分と
がある。前者の例としてはコイルを有するリレー
やモータ、断続光を発しても肉眼の残像効果によ
り連続光として視認される表示灯、大容量のコン
デンサを含んだ回路などがあり、後者の例として
は周波数や時間の安定性が問題となる発振回路や
限時回路、定増幅率が望まれる増幅回路などがあ
る。このうち平滑された電源の供給が不可欠な部
分は概して消費電流が少ない。 On the other hand, inside an electrical device, there are parts that have a smoothing effect themselves, parts that do not require the supply of smoothed power, and parts that require the supply of smoothed power. Examples of the former include relays and motors with coils, indicator lights that emit intermittent light but are visible as continuous light due to the afterimage effect to the naked eye, and circuits containing large capacitors, while examples of the latter include There are oscillation circuits and time-limited circuits where time stability is an issue, and amplifier circuits where a constant amplification factor is desired. Among these, parts that require smoothed power supply generally consume less current.
本考案は以上の点に着目し、大型で高価な平滑
用インダクタンスを使用せずにスイツチ手段によ
り効率良く電圧を安定させる電気機器回路を提供
するものである。 The present invention focuses on the above points and provides an electrical equipment circuit that efficiently stabilizes voltage by means of a switch without using a large and expensive smoothing inductance.
以下図面により説明する。 This will be explained below with reference to the drawings.
第１図において、１は直流電源、２は基準電圧
発生回路、３は電圧比較回路、４はスイツチ手
段、５はフイルタ回路、６は平滑された電源の供
給が不可欠で消費電流の少ない回路部分（以下軽
負荷という）、７は必ずしも平滑された電源の供
給が必要でなく消費電流の多い回路部分（以下重
負荷という）であり、電源１、スイツチ手段４、
フイルタ回路５及び軽負荷６はこの順に接続さ
れ、基準電圧発生回路２は直流電源１から電圧の
供給を受けて基準電圧を発生するように接続され
ている。基準電圧発生回路２で発生された基準電
圧は、フイルタ回路５と軽負荷６との間から取り
出された電圧と電圧比較回路３により比較され、
その差が一定になるようスイツチ手段４の開閉比
率や開閉周期を制御する。即ちフイルタ回路５の
出力電圧が基準より低い場合にはスイツチ手段４
の単位時間当りの導通時間を長くし、基準より高
い場合にはスイツチ手段４の単位時間当りの導通
時間を短かくし、フイルタ回路５の出力電圧を常
に一定値に保つようにされている。重負荷７はス
イツチ手段４とフイルタ回路５との間から電力の
供給を受けるよう接続されている。このように接
続すると重負荷７にはフイルタ回路５を経ずに電
流が供給され、フイルタ回路５の負荷としては軽
負荷６のみとなる。このためフイルタ回路５は軽
負荷６を対象とした極めて小電流用のものでよ
く、抵抗とコンデンサを使用した簡単な構成のも
ので用が足りることになる。又、該抵抗により消
費される電力も小電流のため少なく、発熱上及び
効率上ほとんど問題にならない程度になる。 In Fig. 1, 1 is a DC power supply, 2 is a reference voltage generation circuit, 3 is a voltage comparison circuit, 4 is a switch means, 5 is a filter circuit, and 6 is a circuit portion that requires a smoothed power supply and has low current consumption. (hereinafter referred to as light load), 7 is a circuit portion that does not necessarily require the supply of smoothed power and consumes a large amount of current (hereinafter referred to as heavy load);
The filter circuit 5 and the light load 6 are connected in this order, and the reference voltage generation circuit 2 is connected to receive voltage from the DC power supply 1 and generate a reference voltage. The reference voltage generated by the reference voltage generation circuit 2 is compared with the voltage extracted from between the filter circuit 5 and the light load 6 by the voltage comparison circuit 3,
The opening/closing ratio and opening/closing period of the switch means 4 are controlled so that the difference becomes constant. That is, when the output voltage of the filter circuit 5 is lower than the reference, the switch means 4
The conduction time per unit time of the switch means 4 is increased, and when the voltage is higher than the reference value, the conduction time per unit time of the switch means 4 is shortened, so that the output voltage of the filter circuit 5 is always kept at a constant value. The heavy load 7 is connected to receive power from between the switch means 4 and the filter circuit 5. With this connection, current is supplied to the heavy load 7 without passing through the filter circuit 5, and the light load 6 becomes the only load on the filter circuit 5. Therefore, the filter circuit 5 may be one for extremely small current intended for the light load 6, and a simple structure using a resistor and a capacitor will suffice. In addition, the power consumed by the resistor is small because of its small current, and it is almost negligible in terms of heat generation and efficiency.
第２図は本考案による電気機器回路の具体的な
回路であり、この図において第１図に示したブロ
ツク図と同じ作用を行う部分については同一符号
を付している。 FIG. 2 shows a specific circuit of the electrical equipment circuit according to the present invention, and in this figure, parts having the same functions as those in the block diagram shown in FIG. 1 are designated by the same reference numerals.
この例において、基準電圧はゼナーダイオード
２１と抵抗２２とによつて作られ、この基準電圧
とフイルタ回路５の出力電圧とがトランジスタ３
１により構成されている電圧比較回路３により比
較され、該出力電圧が基準電圧よりある程度低く
なればトランジスタ３１にベース電流が流れて導
通状態になり、これによりトランジスタ４１も導
通状態になり直流電源１から電流がトランジスタ
４１を通つて流れる。その結果フイルタ回路５の
出力電圧が高くなれば、トランジスタ３１がしや
断状態となり、従つてスイツチ手段４が開かれ
る。これを繰り返して軽負荷６には一定の平滑さ
れた電圧が供給されるが、重負荷７については、
フイルタ回路５の前から電流が取り出されて供給
されている。このためフイルタ回路５により平滑
されねばならない電流は極くわずかになり、フイ
ルタ回路５は図示した程度の簡単なRCフイルタ
で十分機能が果せることになる。又もし、軽負荷
６が更に厳密な平滑性を要求するものであれば、
フイルタ回路５の後に同程度のRCフイルタを接
続すれば良い。 In this example, the reference voltage is created by the Zener diode 21 and the resistor 22, and this reference voltage and the output voltage of the filter circuit 5 are connected to the transistor 3.
1, and when the output voltage becomes lower than the reference voltage to some extent, a base current flows through the transistor 31 and becomes conductive. As a result, the transistor 41 also becomes conductive, and the DC power source 1 A current flows through transistor 41 from . As a result, if the output voltage of the filter circuit 5 becomes high, the transistor 31 is turned off and the switching means 4 are therefore opened. By repeating this, a constant smoothed voltage is supplied to the light load 6, but as for the heavy load 7,
Current is taken out and supplied from before the filter circuit 5. Therefore, the current that must be smoothed by the filter circuit 5 becomes extremely small, and the filter circuit 5 can function satisfactorily with a simple RC filter as shown. If the light load 6 requires even stricter smoothness,
An RC filter of the same level may be connected after the filter circuit 5.
以上説明したように本考案によれば、基準電圧
発生回路２による基準電圧とフイルタ回路５の出
力電圧とを電圧比較回路３で比較してその結果に
よりスイツチ手段４を制御するよう接続し、フイ
ルタ回路５の出力端を軽負荷６に、スイツチ手段
４とフイルタ回路５との接続点を重負荷７にそれ
ぞれ接続することにより、スイツチ手段を用いた
方式にもかかわらず、平滑用インダクタンスを用
いずに効率良く電圧を安定できる電気機器回路が
得られる。 As explained above, according to the present invention, the reference voltage generated by the reference voltage generation circuit 2 and the output voltage of the filter circuit 5 are compared in the voltage comparison circuit 3, and the switch means 4 is controlled based on the comparison result. By connecting the output end of the circuit 5 to the light load 6 and the connection point between the switch means 4 and the filter circuit 5 to the heavy load 7, it is possible to avoid using a smoothing inductance despite the system using the switch means. An electrical equipment circuit that can efficiently stabilize voltage can be obtained.
第１図は本考案による電気機器回路のブロツク
図、第２図は本考案による電気機器回路の１具体
例である。
１……直流電源、２……基準電圧発生回路、３
……電圧比較回路、４……スイツチ手段、５……
フイルタ回路、６……軽負荷、７……重負荷。
FIG. 1 is a block diagram of an electric device circuit according to the present invention, and FIG. 2 is a specific example of the electric device circuit according to the present invention. 1...DC power supply, 2...Reference voltage generation circuit, 3
...Voltage comparator circuit, 4...Switch means, 5...
Filter circuit, 6...light load, 7...heavy load.
Claims (1)
チ手段４とRCフイルタ回路５とを備え、基準電
圧発生回路２による基準電圧とRCフイルタ回路
５の出力電圧とを電圧比較回路３で比較してスイ
ツチ手段４を制御するように接続した電気回路に
おいて、平滑された電源の供給が不可欠な負荷は
RCフイルタ回路の出力側に接続し、リレーを含
む消費電流の多い負荷はスイツチ手段４とRCフ
イルタ回路５との接続点に接続するようにしたこ
とを特徴とする電気機器回路。 It is equipped with a reference voltage generation circuit 2, a voltage comparison circuit 3, a switching means 4, and an RC filter circuit 5, and the voltage comparison circuit 3 compares the reference voltage generated by the reference voltage generation circuit 2 with the output voltage of the RC filter circuit 5, and then switches. In the electrical circuit connected to control means 4, the load for which it is essential to supply smoothed power is
An electrical equipment circuit characterized in that it is connected to the output side of the RC filter circuit, and loads that consume a large amount of current, including relays, are connected to the connection point between the switch means 4 and the RC filter circuit 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977135027U JPS6210808Y2 (en) | 1977-10-06 | 1977-10-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1977135027U JPS6210808Y2 (en) | 1977-10-06 | 1977-10-06 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5461224U JPS5461224U (en) | 1979-04-27 |
| JPS6210808Y2 true JPS6210808Y2 (en) | 1987-03-14 |
Family
ID=29104951
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1977135027U Expired JPS6210808Y2 (en) | 1977-10-06 | 1977-10-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6210808Y2 (en) |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS52124443U (en) * | 1976-03-19 | 1977-09-21 |
-
1977
- 1977-10-06 JP JP1977135027U patent/JPS6210808Y2/ja not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5461224U (en) | 1979-04-27 |
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