JPS5843182A - Dc power source circuit - Google Patents
Dc power source circuitInfo
- Publication number
- JPS5843182A JPS5843182A JP14011881A JP14011881A JPS5843182A JP S5843182 A JPS5843182 A JP S5843182A JP 14011881 A JP14011881 A JP 14011881A JP 14011881 A JP14011881 A JP 14011881A JP S5843182 A JPS5843182 A JP S5843182A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- thyristor
- constant
- power source
- power supply
- 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.)
- Granted
Links
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M7/00—Conversion of ac power input into dc power output; Conversion of dc power input into ac power output
- H02M7/02—Conversion of ac power input into dc power output without possibility of reversal
- H02M7/04—Conversion of ac power input into dc power output without possibility of reversal by static converters
- H02M7/12—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
- H02M7/145—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means
- H02M7/155—Conversion of ac power input into dc power output without possibility of reversal by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a thyratron or thyristor type requiring extinguishing means using semiconductor devices only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Rectifiers (AREA)
- Power Conversion In General (AREA)
Abstract
Description
【発明の詳細な説明】
この発明は交流入力電源から比較的低い直流定電圧を得
る電源回路に関す葛ものである。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a power supply circuit that obtains a relatively low constant DC voltage from an AC input power supply.
一般にこの種の直流電源回路は、交流入力電源をトラン
ス、抵抗分圧回路、あるいはコンデンサによる分圧回路
を用いて所定の電圧に降下した後、整流して平滑するこ
とにより所定電圧の直流出力を得るように構成されるの
が普通であった。しがしながら、トランスを用いるもの
は大型化かつ高重量化し、しかもそのトランスが高コス
トであるという欠点を有していた。また抵抗分圧回路を
用いるものは、その抵抗によるジュール発熱損失が大き
いという欠点がある上に、その発熱処理が面倒であり、
また入力電圧の変動や負荷の変動に対して出力電圧の安
定性が悪いという欠点があった。Generally, this type of DC power supply circuit converts the AC input power to a predetermined voltage using a transformer, resistor voltage divider circuit, or capacitor voltage divider circuit, and then rectifies and smoothes it to obtain a DC output of a predetermined voltage. It was common for it to be structured so that it could be obtained. However, those using a transformer have the drawbacks of being large and heavy, and the transformer is also expensive. In addition, those that use resistive voltage divider circuits have the disadvantage of large Joule heat loss due to the resistance, and the heat generation process is troublesome.
Another drawback is that the output voltage is unstable with respect to input voltage fluctuations and load fluctuations.
例えば、第１図に示す従来回路は分圧コンデンサ（１）
とダイオ−白２１＋３１および平滑コンデンサ＋４１よ
りなる整流平滑回路を用゛いた直流電源（Ａ）の例であ
り、負荷（Ｂ）としてタイマ回路（１４）とその出力に
よって制御されるリレー（９）を接続したものである。For example, the conventional circuit shown in Figure 1 uses a voltage dividing capacitor (1)
This is an example of a DC power supply (A) using a rectifying and smoothing circuit consisting of diodes 21+31 and smoothing capacitors +41, and a timer circuit (14) and a relay (9) controlled by its output as a load (B). It is connected.
同図において、電源回路（Ａ）の出力電圧Ｖｃが負荷電
流すなわちリレーコイル（９）の電流によって変動しな
いようにトランジスタ（６）を設け、このプレクタジス
タ（６）がオフ、オフのときオンするようにし、リレー
（９）の開閉による負荷電圧Ｖｃの変動を防止している
。しかしこの回路においても、交流入力電圧ｖ１の変動
や周波数の変動による出力電圧ｖｃの変動は避けられず
、また負荷の変動に対する出力電圧の安定性が悪いとい
う欠点があり、特に交流１００ポルｌ−／２００ボルト
共用あるいは５０Ｈ２／６０Ｈｚ共用機器のような電源
多種定格のものには到底利用できないものであった。In the figure, a transistor (6) is provided so that the output voltage Vc of the power supply circuit (A) does not vary depending on the load current, that is, the current of the relay coil (9), and is turned on when the plectasistor (6) is off or off. This prevents fluctuations in the load voltage Vc due to opening and closing of the relay (9). However, even in this circuit, fluctuations in the output voltage vc due to fluctuations in the AC input voltage v1 and fluctuations in frequency cannot be avoided, and there is also a drawback that the stability of the output voltage with respect to load fluctuations is poor. It could not be used for devices with various power supply ratings, such as devices that share 200 volts or 50H2/60Hz.
この発明は以上のような従来の直流電源回路の欠点に鑑
みてなされたもので、その目的とするところは、小型か
つ軽−であって発熱損失も少く、出力電圧の安定性にす
ぐれ、しかも低コストに構成することができや直流電源
回路を提供し、それによって低価格の電圧多種定格の電
子機器を実現するとともに、部品点数の節減によって在
庫管理面においても利益をもたらそうとするものである
。This invention was made in view of the drawbacks of the conventional DC power supply circuit as described above, and its objectives are to be small and light, with little heat loss, and with excellent output voltage stability. The aim is to provide a DC power supply circuit that can be configured at low cost, thereby realizing low-cost electronic equipment with various voltage ratings, and also to bring benefits in terms of inventory management by reducing the number of parts. It is.
この発明は上記目的を達成するために、分圧用インピー
ダンスとサイリスクと平滑コンデンサをＭｌｕ＋ｃＭＨ
Ｌ、−！＃ ！Ｊ ｉ”’′・”ｐ ａｖ ！−ｔ−ｙ
ｋ”１ｌｌＥＥｉｃＨつことによって、平滑コンデンサ
に充電される電圧がいつもほぼ一定となるようサイリス
タのスイッチングが行なわれるようにしたことを特徴と
する。In order to achieve the above object, this invention uses a voltage dividing impedance, a sirisk, and a smoothing capacitor as Mlu+cMH.
L,-! #! J i”''・”p av! -t-y
The present invention is characterized in that the thyristor is switched so that the voltage charged in the smoothing capacitor is always approximately constant by adjusting the voltage of the smoothing capacitor.
以下この発明の一実施例を図面に基づいて説明する。第
２図は本発明の電源回路をタイマに応用した一実施例を
示す回路図である。An embodiment of the present invention will be described below based on the drawings. FIG. 2 is a circuit diagram showing an embodiment in which the power supply circuit of the present invention is applied to a timer.
まずタイマの概略の動作について説明する。First, the general operation of the timer will be explained.
点線で囲まれた直流電源回路（Ａ）によって得られた電
圧がタイマ用工Ｃ（２８）に供給されると一定時間後に
ＩＣの出力端子（２９）がＨレベルになり、トランジス
タ゛２４を駆動してリレー（２ｓ）が動作するようにな
っている。When the voltage obtained by the DC power supply circuit (A) surrounded by the dotted line is supplied to the timer circuit C (28), the output terminal (29) of the IC becomes H level after a certain period of time, driving the transistor 24. The relay (2s) is now activated.
さて電源回路（Ａ）において、分圧用インピーダンス、
としてのコンデンサα５）とスイッチング用のサイリス
ク０７）と平滑用コンデンサ（２１）が直列に接続され
ている。またサイ″リスタ（１’７）＝７）ゲートには
、抵抗（１９）およびツェナダイオード（２０）からな
る定電圧部によって、：ツエナ電圧ｖ２を越えない電圧
が印加されるよう１トなっている。Ｑ ６）はコンデン
サ（１５１の放電用ダイオ−？、 （ｔ Ｓ）のダイオ
ードはサイリスタ０７）のゲートに逆電流が流れないよ
うにするためのものである。この構成において、第３図
に示すように、まず正極性の電圧が印加されたとすると
、コンデンサ（ｌ砥抵抗０９）、ダイオード（＞ Ｓ）
を通してサイリスタ０７）のゲートに電流が流れ、サイ
リスタα７）が導通する。従って正極性の半サイクル中
はサイリスクのアノードカソード間を通してコンデンサ
（２１）が充電される。次に負極性の半サイクル中には
、コンデンサ（１５）に充電された電荷はダイオード（
ｈａ）ａ通して入力電源に還流されて初期状態に戻る。Now, in the power supply circuit (A), the voltage dividing impedance,
A capacitor α5) for switching, a switching capacitor 07), and a smoothing capacitor (21) are connected in series. In addition, the thyristor (1'7) = 7) is connected to the gate by a constant voltage section consisting of a resistor (19) and a Zener diode (20) so that a voltage not exceeding the Zener voltage v2 is applied to the gate. Q6) is to prevent reverse current from flowing to the gate of the capacitor (discharge diode 151?, diode (tS) is thyristor 07).In this configuration, as shown in Fig. 3. As shown in , if a positive voltage is first applied, the capacitor (l grinding resistor 09), diode (>S)
A current flows through the gate of the thyristor α7), and the thyristor α7) becomes conductive. Therefore, during the positive half cycle, the capacitor (21) is charged across the anode and cathode of the cyrisk. Next, during the negative half cycle, the charge stored in the capacitor (15) is transferred to the diode (
ha) Returns to the initial state by being returned to the input power supply through a.
同様にして数サイクルの間は、サイリスク（ｉ ７）が
毎回導通してコンデンサ（２１）の電圧Ｖｃは充放電を
繰り返しながら上昇する（第３図参照）。ところが、Ｖ
ｃがツェナ電圧ｖｚを越えるようになると正極性の半サ
イクル中もゲートが逆方向にパイ・アスされたままにな
り導通しなくなる。次に負荷によってコンデンサ（２１
）が除々に放電され、Ｖｃ’がｖｚを下まわるようにな
ると、再びサイリスクが導通す□るようになる。従って
交流電源電圧の変動や負荷の変動があっても出力電圧ｖ
ｃとしてほぼｖｚを平均値とする定電圧が得られるので
ある。Similarly, for several cycles, the cyrisk (i7) becomes conductive every time, and the voltage Vc of the capacitor (21) increases while repeating charging and discharging (see FIG. 3). However, V
When c exceeds the Zener voltage vz, the gate remains biased in the reverse direction even during the positive half cycle and is no longer conductive. Next, depending on the load, the capacitor (21
) is gradually discharged and when Vc' falls below vz, the sirisk becomes conductive again. Therefore, even if there are fluctuations in the AC power supply voltage or load, the output voltage v
A constant voltage having an average value of approximately vz as c can be obtained.
第３図において、ｔｏからｔｌまでの期間は、サイリス
タ（＋７）が各正サイクル毎に導通するのでコンデンサ
（２１）の電圧Ｖ ｃ Ｇｔ急激に上昇するが、ｔ１時
点では入力電圧ｖ１が正に反転してもＶｃの芳がツェナ
電圧Ｖｚより大きいのでサイリスク（＋？）は導通せず
、ｔ２時点でＶｃがＶｚまで下がるとはじめてサイリス
タ０７）が導通する。しかしこの場合は導通期間が短い
ので、Ｖｃの上昇も小さい。次に１３時点においては、
この正サイクル期間中にＶｃがＶｚまで達しなかったの
でサイリスタＱ７）の導通も１回休止の状態となり、次
の正サイクルすなわちｔ４時点でＶｃがＶｚより小さく
なると再びサイリスタ（ｌ？）が導通してＶＣを上昇さ
せる。こうして負荷電流があまり大きくなければ、サイ
リ 。In FIG. 3, during the period from to to tl, the thyristor (+7) conducts in each positive cycle, so the voltage V c Gt of the capacitor (21) rises rapidly, but at the time t1, the input voltage v1 becomes positive. Even if it is reversed, the voltage of Vc is larger than the Zener voltage Vz, so the thyristor (+?) does not conduct, and the thyristor 07) does not conduct until Vc drops to Vz at time t2. However, in this case, since the conduction period is short, the increase in Vc is also small. Next, at the 13th point in time,
Since Vc did not reach Vz during this positive cycle, the conduction of thyristor Q7) is also suspended once, and when Vc becomes smaller than Vz in the next positive cycle, that is, at time t4, the thyristor (l?) becomes conductive again. to increase VC. In this way, if the load current is not too large, it will work fine.
−スタ０７）の休止期間が長くなり、負荷電流が増加す
るとサイリスクの導通期間が長くなって、Ｖｃをほぼ一
定に維持するよう瞬作用するのである。When the rest period of the -star 07) becomes longer and the load current increases, the conduction period of the si-risk becomes longer and acts as a momentary force to maintain Vc approximately constant.
第４図および第５図は本発明の他の実施例を承れ抵抗（
１５％よび全波整流のコンデンサ（１５％用いている。FIGS. 4 and 5 show resistors (
15% and full wave rectification capacitors (15% is used.
その龍笛２図の実施例と対応する部分には同じ符号をつ
けである。The same reference numerals are given to the parts corresponding to the embodiment shown in Fig. 2.
以上のようにこの発明による電源回路は、小型かつ軽量
に構成することができ、また発熱損失も少なく、さらに
出力電圧の安定性１こすぐれ、しかも低コストに構成す
ることもできるので、この電源回路を用いることによっ
て低コストの電圧多種定格の電子機器を実現できるとい
う利点がある。As described above, the power supply circuit according to the present invention can be configured to be small and lightweight, have less heat loss, and furthermore have excellent output voltage stability, and can also be configured at low cost. The advantage of using this circuit is that low-cost electronic equipment with various voltage ratings can be realized.
第１図は従来の直流電源回路を用いたタイマ回路図、第
２図は本発明の直流電源回路を用いたタイマ回路図、第
８図は第２図における平滑コンデンサの電圧・Ｖ ｃの
匿化を示ｉ図、第４図および第５図は本発明の他の実施
例を示す回路図である。Fig. 1 is a timer circuit diagram using a conventional DC power supply circuit, Fig. 2 is a timer circuit diagram using the DC power supply circuit of the present invention, and Fig. 8 is a timer circuit diagram using the DC power supply circuit of the present invention. 1, FIG. 4, and FIG. 5 are circuit diagrams showing other embodiments of the present invention.
１５−９圧用コゼデンサ、１６・・・、ダイオ−、ド、
１７ ・・・サイリスク、１８−・ダイオード、ｌ ９
・＝抵″１゜
抗％’ ２０ ・−・ツェナダイオード、２１−・平滑
コンｒンサ１．２２・・・ダイオード、２８−・タイマ
出力リレー、２４ ・： ）ランリスク、２５ ’−・
抵抗、２６・・・コンデンサ、２７・・・ツェナダイオ
ード、２８・・・タイマ用ｘｃ、２ｇ・・・タイマ用工
Ｃの出力端子。15-9 pressure cosédenser, 16..., diode, do,
17...Sirisk, 18--Diode, l 9
・=Resistance "1゜Resistance%' 20 ・-・Zena diode, 21-・Smoothing capacitor 1.22...Diode, 28-・Timer output relay, 24 ・: ) Run risk, 25'-・
Resistor, 26...Capacitor, 27...Zena diode, 28...XC for timer, 2g...Output terminal of C for timer.
代理人 弁理士 縣 浩 介７艶 ヤ ？Ｐ４図 ゛押！５図Agent: Patent Attorney Hiroshi Agata Ya ? P4 figure Press! Figure 5
Claims (1)
て、交流入力電源と負荷との間に、分圧用インピーダン
スを通してサイリスタを直列に介在させるとともに、こ
のサイリスタの負荷側に平滑コンデンサを並列接続し、
サイリスクのゲートに定電圧を印加しておくことによっ
て、負荷側の出力電圧を一定に保つように構成した直流
電源回路。In a power supply circuit that receives an AC voltage as an input and obtains a constant DC voltage, a thyristor is interposed in series between the AC input power source and the load through a voltage dividing impedance, and a smoothing capacitor is connected in parallel to the load side of the thyristor.
A DC power supply circuit configured to keep the output voltage on the load side constant by applying a constant voltage to the gate of Cyrisk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14011881A JPS5843182A (en) | 1981-09-04 | 1981-09-04 | Dc power source circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14011881A JPS5843182A (en) | 1981-09-04 | 1981-09-04 | Dc power source circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5843182A true JPS5843182A (en) | 1983-03-12 |
| JPS644432B2 JPS644432B2 (en) | 1989-01-25 |
Family
ID=15261324
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14011881A Granted JPS5843182A (en) | 1981-09-04 | 1981-09-04 | Dc power source circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5843182A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6030473A (en) * | 1983-07-29 | 1985-02-16 | Nippon Denso Co Ltd | Contactless ignitor for internal-combustion engine |
| WO2005053144A1 (en) * | 2003-11-27 | 2005-06-09 | Daikin Industries, Ltd. | Electric power converter apparatus |
| CN103580515A (en) * | 2013-11-15 | 2014-02-12 | 深圳市航盛电子股份有限公司 | Circuit for reducing power source static power consumption |
| WO2017011008A1 (en) * | 2015-07-15 | 2017-01-19 | Hewlett-Packard Development Company, L.P. | Powering a power monitor |
-
1981
- 1981-09-04 JP JP14011881A patent/JPS5843182A/en active Granted
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6030473A (en) * | 1983-07-29 | 1985-02-16 | Nippon Denso Co Ltd | Contactless ignitor for internal-combustion engine |
| WO2005053144A1 (en) * | 2003-11-27 | 2005-06-09 | Daikin Industries, Ltd. | Electric power converter apparatus |
| KR100767160B1 (en) * | 2003-11-27 | 2007-10-15 | 다이킨 고교 가부시키가이샤 | Electric power converter apparatus |
| AU2004310594B2 (en) * | 2003-11-27 | 2008-05-15 | Daikin Industries, Ltd. | Electric power converter apparatus |
| US7468897B2 (en) | 2003-11-27 | 2008-12-23 | Daikin Industries, Ltd. | Rectifier without active switches |
| CN103580515A (en) * | 2013-11-15 | 2014-02-12 | 深圳市航盛电子股份有限公司 | Circuit for reducing power source static power consumption |
| WO2017011008A1 (en) * | 2015-07-15 | 2017-01-19 | Hewlett-Packard Development Company, L.P. | Powering a power monitor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS644432B2 (en) | 1989-01-25 |
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