JPS588325A - Rush current preventing circuit - Google Patents
Rush current preventing circuitInfo
- Publication number
- JPS588325A JPS588325A JP10571581A JP10571581A JPS588325A JP S588325 A JPS588325 A JP S588325A JP 10571581 A JP10571581 A JP 10571581A JP 10571581 A JP10571581 A JP 10571581A JP S588325 A JPS588325 A JP S588325A
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- resistor
- state relay
- voltage
- input 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.)
- Pending
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
- H02M3/00—Conversion of dc power input into dc power output
- H02M3/22—Conversion of dc power input into dc power output with intermediate conversion into ac
- H02M3/24—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters
- H02M3/28—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac
- H02M3/325—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal
- H02M3/335—Conversion of dc power input into dc power output with intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode to produce the intermediate ac using devices of a triode or a transistor type requiring continuous application of a control signal using semiconductor devices only
Abstract
Description
【発明の詳細な説明】
本発明ｄＡｃ電源の投入時におけるラッシュカレント防
止回路に関する。DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a rush current prevention circuit when turning on a dAc power source.
従来、ＡＣ’１ｔｌｌＩＫ）％Ａてスイッチの投入時に
は大きなラッシュカレントが流れるにも拘らず、ラッシ
ュカレント防止回路が設けられて＾な匹場合が多い。た
とえ、ラッシュカレント防止回路が設けられて−ても第
１図に示すようなものが一般的である。すなわち、Ａ、
Ｃ電源体）をオンすると補助電源トランス（１）の二次
側に発生せる低電圧が整流ダイオード（２）によ〉整流
され、遅延回路（３）を介してソリッドステートリレー
（以下、８．８．Ｒと略称す）（４）をオンするように
なっている。Conventionally, even though a large rush current flows when the switch is turned on, a rush current prevention circuit is often provided. Even if a rush current prevention circuit is provided, the one shown in FIG. 1 is common. That is, A,
When the auxiliary power transformer (1) is turned on, the low voltage generated on the secondary side of the auxiliary power transformer (1) is rectified by the rectifier diode (2), and is then passed through the delay circuit (3) to the solid state relay (hereinafter referred to as 8. 8. (abbreviated as R) (4) is turned on.
しかしながら、このような方法のラッシュカレント防止
回路は遅延１１路（３）における遅延時間の設定がむず
かしく、１＆遅延回路（３）が故障した場合には並列接
読されて論る保−抵抗（５１に大電流が流れて抵抗（ω
を破損する虞れがあ〉、さらにコスト的（も馬匹と匹う
欠点を有していた。However, in the rush current prevention circuit using this method, it is difficult to set the delay time in the delay circuit 11 (3), and if the circuit 1 & delay circuit (3) fails, the protection resistor (51 A large current flows through the resistance (ω
There was a risk of damaging the machine, and it also had the same drawbacks as a horse.
本発明は上記事情に鑑みなされ九もので、その目的と′
するところは比較的簡単な構成でラッシュカレントを防
止し得、かつ安定して動作させることができる安価なラ
ッシュカレント防止回路を蝿。The present invention was made in view of the above circumstances, and its purpose and
What we are trying to do is create an inexpensive rush current prevention circuit that can prevent rush currents with a relatively simple configuration and can operate stably.
供しようとするものである。This is what we are trying to provide.
以下、本発１１を第２図に示す一実施例にもとづ−て説
明する。図中、ム、Ｃ電源（Ａ）Ｋ：は発光ダイオード
ｒ１１を自薦する８８Ｒ（スイッチ手段）Ｑｆｉ、シよ
″び保腰抵抗（５１が並列に接続されており、この８Ｓ
Ｒｒｉ珍の発光ダイオードαりは８８Ｂ （２）駆動回
路０を介して二次側の出力端子αｅ、−に接続するよう
に構成されて偽る。また、上記８８Ｂ （１１の導出側
には整流タイオ〜）’＠４が接続され、この整流ダイオ
ード舖により整流され九電源電圧がコンデンサ（Ｊ９に
蓄積されるようになっている。The present invention 11 will be explained below based on an embodiment shown in FIG. In the figure, M, C power supply (A) K: is 88R (switching means) that self-selects the light emitting diode r11, Qfi, syyom, and resistance resistor (51) are connected in parallel, and this 8S
The light emitting diode α of Rri is 88B (2) It is configured to be connected to the output terminal αe, - of the secondary side via the drive circuit 0. Further, the rectifier diode 88B (11) is connected to the output side of the rectifier diode 11, and the rectifier diode rectifies the power supply voltage to be stored in the capacitor (J9).
つぎに、上記構成にもとづく本発明の作用にっ＾て説明
する。ｔｎｔ、Ａ、Ｃ’電源体）がオンされたと′きに
は二次側の出力端子αＯ１αｔｉに現われる出方電圧回
が文士りの状態を呈しておらず、したがって、ム、Ｃ＊
ｆＭ（Ａ）ｏ入力電流は保−抵抗（５）→整流ダイオー
ドσ着→コンデンサａ９へ流れることとなる。このとき
のラッシュカレントはム、Ｃ電源体）のへカ電圧を実効
値でｖ１保護抵抗【艶の値をＲＪ−シた場合、ｆ■／Ｒ
によって規制される。Next, the operation of the present invention based on the above configuration will be explained. When tnt, A, C' power supply body) is turned on, the output voltage circuit appearing at the output terminal αO1αti of the secondary side does not exhibit a normal state, so that M, C*
The fM(A)o input current flows from the holding resistor (5) to the rectifier diode σ to the capacitor a9. At this time, the rush current is m, and the effective value of the voltage to the C power supply body is v1.
regulated by.
そして、上記Ａ、Ｃ電源偽）をオンした後、一定時間経
過すると図示しなＡ電源′制御回路が動作を開始するた
め二次側の出力電圧（Ｂ）は立上り状態、すなわち正規
の値となって８８Ｒの駆動回路０が働らき、８８８ Ｑ
ｊはオンの状態となる〇すると、上記ム、Ｃ電源（Ａ）
の入力電流は保護抵抗（５）を通らず、８８ＲＱｌのみ
に流れること＼なり、したがって保護抵抗（司の発熱や
不必要な電力損失・電源の不安室性を防止することがで
きる。゛このような構成としたため８１１４ ＠農がオ
フの状態におηて、入力電流が保護抵抗（５）を流れる
時間は二次側の出力電圧中）が立上るまでの時間である
から保護抵抗（５）の発熱は最小値となってラッシュカ
レントを完全に防止することができる。また、回路（１
３の故障によ）二次側の出力電圧（Ｂ）が立上り状態を
示さな匹場舎、 Ａ、Ｃの入力電流は保−抵抗（５）に
流れるが二次側出力電圧（Ｂ）が立上りの状態を示して
論ない丸め負荷電流が流れず、かつ保護抵抗、１５）の
発熱量も小さい値を保持することとなる。Then, after a certain period of time has elapsed after turning on the above A and C power supplies (false), the A power supply' control circuit (not shown) starts operating, so the output voltage (B) on the secondary side becomes a rising state, that is, a normal value. Then, 88R's drive circuit 0 works, and 888Q
j will be in the on state〇Then, the above m, C power supply (A)
The input current does not pass through the protective resistor (5) and flows only through 88RQl, thus preventing heat generation in the protective resistor, unnecessary power loss, and instability of the power supply. Because of the configuration, when the input current flows through the protective resistor (5) in the off state, the time for the input current to flow through the protective resistor (5) is the time until the output voltage on the secondary side rises, so the protective resistor (5) The heat generation is minimized and rush current can be completely prevented. Also, the circuit (1
If the output voltage (B) on the secondary side does not show a rising state due to the failure in item 3), the input currents of A and C flow to the holding resistor (5), but the output voltage (B) on the secondary side does not show a rising state. Indicating the rising state, no rounding load current flows, and the amount of heat generated by the protective resistor 15) remains at a small value.
以上説明したように本発明によれは二次側の出力電圧が
立上り状態となるまでは保護抵抗を最小値の入力電流に
よって発熱せしめ、立上り状態となると同時に上記入力
電流は保護抵抗から８８１Ｌへ切換えられてラッシュカ
レントを防止し得、しかも安定して動作させることがで
きる゛などの優れた効果を奏するものである。As explained above, according to the present invention, the protective resistor is made to generate heat by the input current of the minimum value until the output voltage on the secondary side reaches the rising state, and as soon as the output voltage on the secondary side reaches the rising state, the input current is switched from the protective resistor to 881L. This has excellent effects such as being able to prevent rush currents and stable operation.
第１図は従来のラッシュカレント防止回路図、第２図は
本考案の一実施例を示すラッシュカレント防止回路図で
ある。。
Ａ・・ＡＣ”電源 １２・・・発光ダイオード
１１ ソリッドステートリレー（ＳＳａ）５・・・保
護抵抗 １３・・駆動回路１６．１６ −二次
側出力端子 Ｂ・二次側出力電圧式厖大 弁理士 井
上 −男
第１図FIG. 1 is a conventional rush current prevention circuit diagram, and FIG. 2 is a rush current prevention circuit diagram showing an embodiment of the present invention. . A...AC" power supply 12...Light-emitting diode 11 Solid state relay (SSa) 5...Protective resistor 13...Drive circuit 16.16 -Secondary side output terminal B.Secondary side output voltage type Kudai Patent attorney Inoue - Male Figure 1
Claims (1)
たソリッドステートリレーと、このソリッドステートリ
レーに並列接続された保護抵抗と、上記ソリッドステー
トリレーと二次側出力端子との間に接続されて上記ソリ
ッドステートリレーを駆動する駆動回路とを備え、上記
ＡＣ電源がオンしたときの入力電流を保護抵抗に流して
ソリッドステートリレーを保護し、二次側出力電圧が規
定電圧以上に達したとき、駆動回路を介して上記ソリッ
ドステートリレーが駆動され、入力電流を上記保護抵抗
からソリッドステートリレーに切換えられて流すように
したことｔ４１１黴とするラッシュカレント防止回路。An AC' power source, a solid state relay connected to the input line of this AC' power source, a protective resistor connected in parallel to this solid state relay, and a protective resistor connected between the solid state relay and the secondary side output terminal. and a drive circuit that drives the solid state relay, and protects the solid state relay by passing the input current when the AC power source is turned on to the protective resistor, and when the secondary output voltage reaches a specified voltage or more. . A rush current prevention circuit in which the solid state relay is driven through a drive circuit, and the input current is switched from the protective resistor to the solid state relay.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10571581A JPS588325A (en) | 1981-07-08 | 1981-07-08 | Rush current preventing circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10571581A JPS588325A (en) | 1981-07-08 | 1981-07-08 | Rush current preventing circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS588325A true JPS588325A (en) | 1983-01-18 |
Family
ID=14415025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10571581A Pending JPS588325A (en) | 1981-07-08 | 1981-07-08 | Rush current preventing circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS588325A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6082095A (en) * | 1983-10-12 | 1985-05-10 | Toshiba Corp | Voltage type inverter device |
| US4628235A (en) * | 1985-09-19 | 1986-12-09 | Gulf & Western Manufacturing Company | Control circuit for motor driver |
| US4937722A (en) * | 1988-08-23 | 1990-06-26 | North American Philips Corporation | High efficiency direct coupled switched mode power supply |
-
1981
- 1981-07-08 JP JP10571581A patent/JPS588325A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6082095A (en) * | 1983-10-12 | 1985-05-10 | Toshiba Corp | Voltage type inverter device |
| US4628235A (en) * | 1985-09-19 | 1986-12-09 | Gulf & Western Manufacturing Company | Control circuit for motor driver |
| US4937722A (en) * | 1988-08-23 | 1990-06-26 | North American Philips Corporation | High efficiency direct coupled switched mode power supply |
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