JPH01194823A - Charge/discharge circuit for capacitor - Google Patents
Charge/discharge circuit for capacitorInfo
- Publication number
- JPH01194823A JPH01194823A JP63017355A JP1735588A JPH01194823A JP H01194823 A JPH01194823 A JP H01194823A JP 63017355 A JP63017355 A JP 63017355A JP 1735588 A JP1735588 A JP 1735588A JP H01194823 A JPH01194823 A JP H01194823A
- Authority
- JP
- Japan
- Prior art keywords
- switch
- discharge resistor
- capacitor
- low voltage
- thrown
- 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
- 239000003990 capacitor Substances 0.000 title claims abstract description 22
- 238000007599 discharging Methods 0.000 claims description 9
- 238000001514 detection method Methods 0.000 description 8
- 238000010586 diagram Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
Landscapes
- Direct Current Feeding And Distribution (AREA)
Abstract
Description
【発明の詳細な説明】
〔発明の目的〕
（産業上の利用分野）
本発明は、直流フィルタ回路のコンデンサの充放電回路
に関する。DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Field of Industrial Application) The present invention relates to a charging/discharging circuit for a capacitor in a DC filter circuit.
（従来の技術）
従来の充放電回路を第２図に示す。スイッチ１を投入す
ることにより回路に電圧が印加され、低電圧検出器３が
電圧有を検知すると高速度遮断器２が接点を閉じる。そ
してコンデンサ６の両端に電圧が印加され充電を開始す
る。(Prior Art) A conventional charging/discharging circuit is shown in FIG. By turning on the switch 1, voltage is applied to the circuit, and when the low voltage detector 3 detects the presence of voltage, the high speed circuit breaker 2 closes the contact. A voltage is then applied across the capacitor 6 to start charging.
次に高速度遮断器２の接点を開くと電源は断となる。そ
してスイッチ１を開放することでスイッチ７が投入され
て第２図中の矢印のように電流が流れ放電回路が形成さ
れる。Next, when the contact of the high-speed circuit breaker 2 is opened, the power is cut off. Then, by opening the switch 1, the switch 7 is turned on, and a current flows as indicated by the arrow in FIG. 2, forming a discharge circuit.
このようにして電源断となってスイッチ１を切れば必ず
コンデンサ６が放電するという回路構成にして、感電事
故を未然に防いでいる。In this way, the circuit structure is such that whenever the power is cut off and the switch 1 is turned off, the capacitor 6 is always discharged, thereby preventing electric shock accidents.
（発明が解決しようとする課題）
上述したように、スイッチ７が閉じれば必ず放電回路が
形成されなければならないが、万一放電抵抗器５が断線
していれば、放電回路が形成できないことになる。しか
もこの放電抵抗器５が断線したことを知る手段がない。(Problem to be Solved by the Invention) As described above, a discharge circuit must be formed when the switch 7 is closed, but if the discharge resistor 5 is disconnected, the discharge circuit cannot be formed. Become. Moreover, there is no way to know that the discharge resistor 5 is disconnected.
本発明は、放電抵抗器の断線検知を可能にしたコンデン
サの充放電回路を提供することを目的とする。SUMMARY OF THE INVENTION An object of the present invention is to provide a capacitor charging/discharging circuit that makes it possible to detect disconnection of a discharge resistor.
（課題を解決するための手段）
本発明では、コンデンサと、電源電圧を検出する電圧検
出手段と、この電圧検出手段と直列接続される放電抵抗
器と、電圧検出手段による検出値が所定値以上であるこ
とを条件に投入されコンデンサを充電するしゃ断器と、
コンデンサの放電時に投入され放電抵抗器を通る放電回
路を形成するスイッチとを有することを特徴とする。(Means for Solving the Problems) In the present invention, a capacitor, a voltage detection means for detecting a power supply voltage, a discharge resistor connected in series with the voltage detection means, and a detection value of the voltage detection means equal to or higher than a predetermined value are provided. a breaker that is turned on and charges the capacitor on the condition that
A switch that is turned on when the capacitor is discharged forms a discharge circuit passing through the discharge resistor.
（作 用）
このように構成されたものにおいては、放電抵抗器が断
線していると電圧検出手段は低電圧を検出するので、電
圧検出手段の検出値により放電抵抗器の断線が検知され
る。(Function) In the device configured in this way, if the discharge resistor is disconnected, the voltage detection means detects a low voltage, so the disconnection of the discharge resistor is detected based on the detected value of the voltage detection means. .
（実施例） 本発明の一実施例を第１図を参照して説明する。(Example) An embodiment of the present invention will be described with reference to FIG.
１はスイッチ、２は高速度しゃ断器、３は電源電圧の低
下を検出する低電圧検出器、４は制限抵抗器、５は放電
抵抗器であり、スイッチ１、制限抵抗器４、低電圧検出
器３．放電抵抗器５は直列接続される。高速度しゃ断器
２は低電圧検出器３が所定値電圧以上を検出すると投入
される。低電圧が検出された場合には高速度しゃ断器２
は投入されない、６はフィルタコンデンサ、７はスイッ
チであり、スイッチ１を開放するとスイッチ７が投入さ
れ、フィルタコンデンサ６、スイッチ７及び放電抵抗器
５により放電回路が形成される。1 is a switch, 2 is a high-speed breaker, 3 is a low voltage detector that detects a drop in power supply voltage, 4 is a limiting resistor, and 5 is a discharge resistor; switch 1, limiting resistor 4, low voltage detection Vessel 3. The discharge resistors 5 are connected in series. The high speed breaker 2 is turned on when the low voltage detector 3 detects a voltage equal to or higher than a predetermined value. High speed breaker 2 if low voltage is detected
is not closed, 6 is a filter capacitor, and 7 is a switch. When switch 1 is opened, switch 7 is closed, and filter capacitor 6, switch 7, and discharge resistor 5 form a discharge circuit.
放電抵抗器５が正常である場合、スイッチ１を投入する
と低電圧検出器は所定電圧以上を検出し、高速度しゃ断
器２が投入される。そこでフィルタコンデンサ６が充電
される。次に高速度しゃ断器２を開放した後、スイッチ
１を開放すると、フィルタコンデンサ６に蓄えられた電
荷はスイッチ７゜放電抵抗器５を通って放電される。放
電抵抗器５は低電圧検出器３の制限抵抗の一部としても
機能する。When the discharge resistor 5 is normal, when the switch 1 is turned on, the low voltage detector detects a predetermined voltage or higher, and the high speed breaker 2 is turned on. The filter capacitor 6 is then charged. Next, after opening the high speed breaker 2, when the switch 1 is opened, the charge stored in the filter capacitor 6 is discharged through the switch 7 and the discharge resistor 5. The discharge resistor 5 also functions as part of the limiting resistance of the low voltage detector 3.
一方、放電抵抗器５が断線している場合、スイッチ１を
投入すると、低電圧検出器３は低電圧であることを検出
する。従って低電圧検出器３により放電抵抗器５の断線
が検知される。On the other hand, when the discharge resistor 5 is disconnected, when the switch 1 is turned on, the low voltage detector 3 detects that the voltage is low. Therefore, the low voltage detector 3 detects the disconnection of the discharge resistor 5.
低電圧検出器３が低電圧を検出した場合に表示ランプを
点灯させるようにすれば、放電回路が形成されないとい
う表示となる。この表示ランプが点灯しているときには
フィルタコンデンサ６を別の手段で放電させることによ
り感電事故を防ぐことができる。If the indicator lamp is turned on when the low voltage detector 3 detects a low voltage, it will be displayed that the discharge circuit is not formed. When this indicator lamp is lit, electric shock accidents can be prevented by discharging the filter capacitor 6 by another means.
また、低電圧検出器３が低電圧を検出すると高速度しゃ
断器２が投入されないので、フィルタコンデンサ６が再
び充電されることはなくなる。Further, when the low voltage detector 3 detects a low voltage, the high speed breaker 2 is not turned on, so the filter capacitor 6 is not charged again.
本発明によれば、放電抵抗器の断線検知を可能にしたコ
ンデンサの充放電回路を提供することができる。According to the present invention, it is possible to provide a capacitor charging/discharging circuit that enables disconnection detection of a discharge resistor.
第１図は本発明の一実施例の構成を示す回路図、第２図
は従来の充放電回路を示す回路図である。
１・・・スイッチ ２・・・高速度遮断器３・・
・低電圧検出器 ４・・・制限抵抗器５・・・放電抵
抗器 ６・・・フィルタコンデンサ代理人 弁理士
則 近 憲 佑
同 第子丸 健
第１図FIG. 1 is a circuit diagram showing the configuration of an embodiment of the present invention, and FIG. 2 is a circuit diagram showing a conventional charging/discharging circuit. 1...Switch 2...High speed circuit breaker 3...
・Low voltage detector 4...Limiting resistor 5...Discharge resistor 6...Filter capacitor representative Patent attorney Noriyuki Chika Ken Yudo Daishimaru Ken Figure 1
Claims (1)
の電圧検出手段と直列接続される放電抵抗器と、前記電
圧検出手段により検出された電圧値が所定値以上である
ことを条件に投入され前記コンデンサを充電するしや断
器と、前記コンデンサの放電時に投入され前記放電抵抗
器を通る放電回路を形成するスイッチとを有するコンデ
ンサの充放電回路。A capacitor, a voltage detecting means for detecting the power supply voltage, a discharge resistor connected in series with the voltage detecting means, and the voltage detecting means are supplied with the voltage detected by the voltage detecting means on the condition that the voltage value detected by the voltage detecting means is equal to or higher than a predetermined value. A charging/discharging circuit for a capacitor, the circuit having a circuit breaker for charging a capacitor, and a switch that is turned on when the capacitor is discharged to form a discharging circuit passing through the discharging resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63017355A JPH01194823A (en) | 1988-01-29 | 1988-01-29 | Charge/discharge circuit for capacitor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63017355A JPH01194823A (en) | 1988-01-29 | 1988-01-29 | Charge/discharge circuit for capacitor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01194823A true JPH01194823A (en) | 1989-08-04 |
Family
ID=11941740
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63017355A Pending JPH01194823A (en) | 1988-01-29 | 1988-01-29 | Charge/discharge circuit for capacitor |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01194823A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5081069A (en) * | 1989-12-26 | 1992-01-14 | Texas Instruments Incorporated | Method for depositing a Tio2 layer using a periodic and simultaneous tilting and rotating platform motion |
| KR101018896B1 (en) * | 2006-07-25 | 2011-03-04 | 주식회사 만도 | Charging and discharging circuit of smoothing capacitor |
-
1988
- 1988-01-29 JP JP63017355A patent/JPH01194823A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5081069A (en) * | 1989-12-26 | 1992-01-14 | Texas Instruments Incorporated | Method for depositing a Tio2 layer using a periodic and simultaneous tilting and rotating platform motion |
| KR101018896B1 (en) * | 2006-07-25 | 2011-03-04 | 주식회사 만도 | Charging and discharging circuit of smoothing capacitor |
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