JPS614418A - Rush current limiting system - Google Patents
Rush current limiting systemInfo
- Publication number
- JPS614418A JPS614418A JP59126860A JP12686084A JPS614418A JP S614418 A JPS614418 A JP S614418A JP 59126860 A JP59126860 A JP 59126860A JP 12686084 A JP12686084 A JP 12686084A JP S614418 A JPS614418 A JP S614418A
- Authority
- JP
- Japan
- Prior art keywords
- power
- inrush current
- current limiting
- section
- turned
- 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
Landscapes
- Direct Current Feeding And Distribution (AREA)
Abstract
(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.
Description
【発明の詳細な説明】
〔発明の技術分野〕
この発明はマイクロプロセッサ等を搭載したー＃也子機
器に使用される成像装置の突入電流制限方式に関するも
のである。DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to an inrush current limiting method for an image forming device used in a digital camera device equipped with a microprocessor or the like.
第１図は従来の電源装置を示す図である。図においてＩ
ｌｌは曲用交流電源全整流する整流部、（２）は電源投
入時の突入電流を一定値以下に抑える突入電流制限部、
＋３１は歪流部＋１１により壁流された電圧のリップル
金除去する平滑部、（４）は平滑部（３１により平滑化
された直流電圧を通常スイッチング等により一定電圧に
変換する定電圧部である。FIG. 1 is a diagram showing a conventional power supply device. In the figure I
ll is a rectifier that fully rectifies the bent AC power supply, (2) is an inrush current limiter that suppresses the inrush current at power-on to a certain value or less,
+31 is a smoothing part that removes ripples from the wall voltage flowing through the distorted current part +11, and (4) is a smoothing part (constant voltage part that converts the DC voltage smoothed by 31 into a constant voltage by normal switching etc. .
次に動作について説明する。電源投入時、商用交流′電
圧は壁流都Ｉｌｌにより直流化され、平滑部＋３１内の
コンデンサに急速に充電される０この充電電流は１００
Ａ−２０ＯＡにも爆し、コンデンサの性能劣化、電源ス
ィッチの溶着等の原因となる０突入電流制限部（２）は
電源投入時のみ動作し、この突入電流を低減させるため
、通常、回路に直列に抵抗を入れ、平滑部（３；のコン
デンサが一定量充電された後直列抵抗の両端をＳＯＮ等
で短絡する方法がとられる。定電圧部（４〕は平滑５（
３）により平滑化された直流電圧からスイッチング等に
より、常に一足直流電圧Ｖ。を得る働きをする。通常の
場合、突入電流制限部（２）の８ＯＮは定電圧部（４）
がスイッチングを開始したことによシＯＮされ突入電流
制限抵抗の両端を短絡する構成となっている。Next, the operation will be explained. When the power is turned on, the commercial AC' voltage is converted to DC by the wall current, and the capacitor in the smoothing section +31 is rapidly charged. This charging current is 100
The 0 inrush current limiter (2), which can also explode on A-20OA and cause capacitor performance deterioration and power switch welding, operates only when the power is turned on, and to reduce this inrush current, it is usually A method is used in which a resistor is connected in series, and after the capacitor in the smoothing section (3) has been charged to a certain amount, both ends of the series resistor are short-circuited with a SON, etc.The constant voltage section (4) is connected to the smoothing section (3).
3) From the DC voltage smoothed by switching, etc., the DC voltage is always V. It works to obtain. Normally, the 8ON of the inrush current limiting section (2) is the constant voltage section (4).
When the inrush current limiting resistor starts switching, it is turned on and short-circuits both ends of the inrush current limiting resistor.
従来の電源装置は以上のように構成されていたので、電
源スイッチがＯＦＦされ、定電圧部（４）のスイッチン
グが完全に停止しないうちに電亦スイッチがＯＮされた
場合、（通常、電源スイッチＯＦＦ後、数秒間に及ぶ。Conventional power supply devices are configured as described above, so if the power switch is turned off and then turned on before switching of the constant voltage section (4) has completely stopped, (normally, the power switch It lasts for several seconds after turning off.
）突入電流制限部（２）のＳＯＮは電源スィッチＯＮ
と同時にＯＮされるため、過大な突入電流を生ずるとい
う欠点がめった。) The SON of the inrush current limiter (2) is set when the power switch is turned on.
Since they are turned on at the same time, there is a problem that an excessive rush current is generated.
この発明は上記のような従来のものの欠点全除去するた
めになされたもので、従来の電源装置に電源入切検出部
を設けることにより、゛電源スィッチの短い投入間隔に
おいても正常に突入電流を制限でさる突入電流制限方式
を提供するものである。This invention was made in order to eliminate all the drawbacks of the conventional power supply device as described above, and by providing a power on/off detection section in the conventional power supply device, it is possible to properly detect inrush current even at short intervals between power switch ons. This provides an inrush current limiting method.
以下、この発明の一実施例を図について説明−する。 An embodiment of the present invention will be described below with reference to the drawings.
第２図に訃いてｉｌｌ〜（４］は第１図の同一符号のも
山部である。また第８図は電源０Ｎ１０ＦＦ時の′電源
入力ＡＣＩＮ、定電圧出力■０、及び電源入切検出部（
５）の出力であるＰＦＤのタイムチャートである。In addition to Fig. 2, ill~(4) is the same numbered part as in Fig. 1. Fig. 8 also shows the power supply input ACIN, constant voltage output ■0, and power on/off detection when the power supply is 0N10FF. Department (
5) is a time chart of the PFD output.
突入電流制限部（２）のＳＯＮはＰＦＤによ＃）ＯＮ１
０ＦＦ制御される〇
電源入切検出５（５）は平滑部（３］の出力圧電を監視
し一定電圧以下になった場合には電源人切検出都（５）
の出力ＰＦＤ？Ｉ−Ｌレベルにし、一定電圧以上の場合
にはＰＦＤｉＨレベルにする０
以上全タイムチャートで示せば第８図に示すとおり、Ｐ
ＦＤは電源ＯＦＦのときｔ１時間（通常数１０ｍ５）だ
け遅れてＬレベルとなυ、電源ＯＮのとき１２時間だけ
遅れてＨレベルとなる。突入電流制限部（２）のＳＯＮ
は第１図の場合と異なり、電源入切検出部（５）の出力
ＰＦＤがＨレベルのと２５、ｏＮし、ＬレベルのときＯ
ＦＦするよう制御される。そ。ｆ、ゎ□突い、ヵ５やい
□７．ア、１圧 ”部（４）のスイッチング動作
時か否かに関係なくく、確実に突入電流が制御される〇
〔発明の効果〕
以上のようにこの発明によれば、電源入切検出により突
入′亀流制限郡τコントロールするように構成したので
短い電源投入間隔においても突入電流を低くおさえるこ
とが可能となり、電源スィッチ、整流部のダイオード、
又は平滑部のコンデンサ等の信頼性全向上することがで
きる勿来がある。また電源入切検出部（５）の出力ＰＦ
Ｄｌｊ：、マイクロプロセッサ等を搭載した一般電子機
器のメモリバンクアップ時に必要な停電検知５信号とし
てそのまま使える効果がある。The SON of the inrush current limiter (2) is set to ON1 by the PFD.
0FF controlled 〇Power on/off detection 5 (5) monitors the output piezoelectricity of the smoothing part (3), and when the voltage falls below a certain level, the power on/off detection 5 (5)
output PFD? If the voltage exceeds a certain level, the P
When the power is turned off, the FD goes to L level with a delay of t1 time (usually several tens of m5), and when the power is turned on, it goes to H level with a delay of 12 hours. SON of inrush current limiter (2)
is different from the case shown in Fig. 1, when the output PFD of the power on/off detection section (5) is at H level, it is oN, and when it is at L level, it is oN.
It is controlled to be FF. So. f, ゎ□Strike, ka5 yai□7. A. Inrush current is reliably controlled regardless of whether or not the 1-voltage part (4) is in switching operation. [Effects of the Invention] As described above, according to the present invention, by detecting power on/off, Since the structure is configured to control the inrush current limit group τ, it is possible to keep the inrush current low even during short power-on intervals, and the power switch, rectifier diode,
Alternatively, the reliability of the smoothing section capacitor, etc. can be completely improved. In addition, the output PF of the power on/off detection section (5)
Dlj: has the effect of being usable as is as a power failure detection signal 5 required when upgrading the memory bank of general electronic equipment equipped with a microprocessor or the like.
第１図は従来の電源装置を示す構成図、第２図はこの発
明の一実施例による電源装置を示す構成図、第８図は第
２図の構成における各部のタイムチャートである。
１１）は照流都、（２）は突入電流制限部、（３）は平
滑部、（４１は定電圧部、（５）は電源入切検出部０な
お、図中同一符号は同一、又は相当部分を示す。FIG. 1 is a configuration diagram showing a conventional power supply device, FIG. 2 is a configuration diagram showing a power supply device according to an embodiment of the present invention, and FIG. 8 is a time chart of each part in the configuration of FIG. 2. 11) is the current limiter, (2) is the inrush current limiting section, (3) is the smoothing section, (41 is the constant voltage section, and (5) is the power on/off detection section. A considerable portion is shown.
Claims (1)
直流安定化電源装置において、電源ＯＮ時の突入電流を
低くおさえる突入電流制限部と、入力商用交流電源のＯ
Ｎ／ＯＦＦを検出する電源入切検出部を備え、電源入切
検出部の出力により、突入電流制限部をコントロールす
ることを特徴とする突入電流制限方式。In a DC stabilized power supply device that uses commercial AC power as input and is used for general electronic equipment, there is an inrush current limiter that suppresses inrush current when the power is turned on, and an inrush current limiter that suppresses the inrush current when the power is turned on.
An inrush current limiting method characterized by having a power on/off detection section that detects N/OFF, and controlling an inrush current limiting section by the output of the power on/off detection section.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59126860A JPS614418A (en) | 1984-06-18 | 1984-06-18 | Rush current limiting system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP59126860A JPS614418A (en) | 1984-06-18 | 1984-06-18 | Rush current limiting system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS614418A true JPS614418A (en) | 1986-01-10 |
Family
ID=14945628
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP59126860A Pending JPS614418A (en) | 1984-06-18 | 1984-06-18 | Rush current limiting system |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS614418A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011523335A (en) * | 2008-07-03 | 2011-08-04 | シニテク フェルトリーブシュゲセルシャフト エムベーハー | Circuit arrangement and control circuit for power supply unit, computer power supply unit, and switching method of power supply unit |
| US8885367B2 (en) | 2009-08-18 | 2014-11-11 | Fujitsu Technology Solutions Intellectual Property Gmbh | Input circuit for an electrical device, use of an input circuit and electrical device |
| JP2019004553A (en) * | 2017-06-13 | 2019-01-10 | 三菱電機株式会社 | Erroneous connection detection circuit |
-
1984
- 1984-06-18 JP JP59126860A patent/JPS614418A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011523335A (en) * | 2008-07-03 | 2011-08-04 | シニテク フェルトリーブシュゲセルシャフト エムベーハー | Circuit arrangement and control circuit for power supply unit, computer power supply unit, and switching method of power supply unit |
| US8653700B2 (en) | 2008-07-03 | 2014-02-18 | Fujitsu Technology Solutions Intellectual Property Gmbh | Circuit arrangement with a power input and an operating method for controlling a power input circuit |
| US8885367B2 (en) | 2009-08-18 | 2014-11-11 | Fujitsu Technology Solutions Intellectual Property Gmbh | Input circuit for an electrical device, use of an input circuit and electrical device |
| JP2019004553A (en) * | 2017-06-13 | 2019-01-10 | 三菱電機株式会社 | Erroneous connection detection circuit |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP4430746B2 (en) | Switched-mode power supply circuit having operating mode and standby mode | |
| JP2000513920A (en) | Overvoltage protection circuit for SMPS based on demagnetization signal | |
| EP0542040B1 (en) | Trip control device for circuit breaker | |
| JP2007325459A (en) | Power supply unit | |
| JPS614418A (en) | Rush current limiting system | |
| US4965692A (en) | Overload detector and protection circuit | |
| JP2006121779A (en) | Converter and servo controller for robot using it | |
| JP3849298B2 (en) | Voltage type inverter | |
| JPH0145223Y2 (en) | ||
| JPS5938824A (en) | Electric power supply controlling system | |
| JP2905908B2 (en) | Multiple output switching power supply | |
| JP2648604B2 (en) | Open phase detector | |
| JPH0219856Y2 (en) | ||
| JPS6070928A (en) | Rush current preventing device | |
| JP2524897Y2 (en) | Power supply | |
| JPH0258860B2 (en) | ||
| JP4726398B2 (en) | Uninterruptible communication rectifier power supply | |
| JPH074593Y2 (en) | Overcurrent detection circuit | |
| JP2546019B2 (en) | Power failure detection circuit | |
| JPS6040011Y2 (en) | Muting control signal generation circuit | |
| JP2000089833A (en) | Control power source capable of coping with ac and dc input | |
| JPS601642B2 (en) | Momentary power failure protection circuit | |
| JPH0431772A (en) | Service interruption detecting circuit | |
| JPH0226191Y2 (en) | ||
| JPS583538A (en) | Storage battery charger |