JPS6445443U - - Google Patents
Info
- Publication number
- JPS6445443U JPS6445443U JP1987116730U JP11673087U JPS6445443U JP S6445443 U JPS6445443 U JP S6445443U JP 1987116730 U JP1987116730 U JP 1987116730U JP 11673087 U JP11673087 U JP 11673087U JP S6445443 U JPS6445443 U JP S6445443U
- Authority
- JP
- Japan
- Prior art keywords
- line
- circuit
- control signal
- overvoltage protection
- input overvoltage
- 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 claims description 2
- 238000009499 grossing Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 3
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Protection Of Static Devices (AREA)
- Dc-Dc Converters (AREA)
- Power Conversion In General (AREA)
Description
第１図は本考案による入力過電圧保護回路の第
一の実施例を示す回路図、第２図は本考案の第二
の実施例を示す回路図、第３図、第４図、第５図
及び第６図は、それぞれ本考案の第三、第四、第
五及び第六の実施例を示す回路図である。
３，４……交流ライン、５……整流回路、６，
７……直流ライン、８……負荷、９，１０……コ
ンデンサ、１１……電圧制限回路、１２……抵抗
（インピーダンス素子）、１３……トライアツク
（スイツチ手段）、１３′……サイリスタ（スイ
ツチ手段）、１４……制御信号付与禁止回路、４
６……制御信号送出回路。
Fig. 1 is a circuit diagram showing a first embodiment of the input overvoltage protection circuit according to the present invention, Fig. 2 is a circuit diagram showing a second embodiment of the invention, Figs. 3, 4, and 5. and FIG. 6 are circuit diagrams showing third, fourth, fifth and sixth embodiments of the present invention, respectively. 3, 4... AC line, 5... Rectifier circuit, 6,
7...DC line, 8...Load, 9, 10...Capacitor, 11...Voltage limiting circuit, 12...Resistor (impedance element), 13...Triack (switch means), 13'...Thyristor (switch means), 14...control signal provision prohibition circuit, 4
6...Control signal sending circuit.
Claims (1)
流ラインに接続され、かつ交流を直流に変換する
整流回路と、該整流回路に接続された一対の直流
ラインと、該一対の直流ライン間に接続された平
滑用コンデンサと、前記一対の直流ラインに接続
された負荷と、前記交流ライン又は前記直流ライ
ンに直列に接続されたインピーダンス素子と、該
インピーダンス素子の両端に接続されたスイツチ
手段と、該スイツチ手段にオン制御信号を付与す
る制御信号送出回路と、前記交流ライン又は前記
直流ライン間に接続され、かつ前記交流ラインの
電圧又は前記直流ラインの電圧が所定電圧に達し
たとき、前記制御信号送出回路から前記スイツチ
手段へのオン制御信号の付与を禁止する制御信号
付与禁止回路とで構成されることを特徴とする入
力過電圧保護回路。 (2) 前記スイツチ手段はサイリスタである実用
新案登録請求の範囲第(1)項記載の入力過電圧保
護回路。 (3) 前記インピーダンス素子は溶断し得る抵抗
又は直列に接続されたヒユーズを有する抵抗であ
る実用新案登録請求の範囲第(1)項記載の入力過
電圧保護回路。 (4) 前記制御信号付与禁止回路は定電圧素子又
は定電圧回路を有する実用新案登録請求の範囲第
(1)項記載の入力過電圧保護回路。[Claims for Utility Model Registration] (1) An AC line connected to an AC power supply, a rectifier circuit connected to the AC line and converting AC into DC, and a pair of DC lines connected to the rectifier circuit. , a smoothing capacitor connected between the pair of DC lines, a load connected to the pair of DC lines, an impedance element connected in series to the AC line or the DC line, and the impedance element. a switch means connected to both ends, a control signal sending circuit for applying an ON control signal to the switch means, and a switch connected between the AC line or the DC line, and the voltage of the AC line or the voltage of the DC line is An input overvoltage protection circuit comprising: a control signal application prohibition circuit that prohibits application of an ON control signal from the control signal sending circuit to the switch means when a predetermined voltage is reached. (2) The input overvoltage protection circuit according to claim (1), wherein the switching means is a thyristor. (3) The input overvoltage protection circuit according to claim 1, wherein the impedance element is a resistor that can be fused or a resistor having a fuse connected in series. (4) The control signal provision prohibition circuit is a utility model registration claim that includes a constant voltage element or a constant voltage circuit.
Input overvoltage protection circuit described in (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987116730U JPS6445443U (en) | 1987-04-30 | 1987-07-31 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP6405887 | 1987-04-30 | ||
| JP1987116730U JPS6445443U (en) | 1987-04-30 | 1987-07-31 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6445443U true JPS6445443U (en) | 1989-03-20 |
Family
ID=31718299
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987116730U Pending JPS6445443U (en) | 1987-04-30 | 1987-07-31 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6445443U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015098937A1 (en) * | 2013-12-27 | 2015-07-02 | ダイキン工業株式会社 | Overvoltage protection circuit and power conversion device provided therewith |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6028485B2 (en) * | 1980-10-31 | 1985-07-05 | 株式会社松崎 | Handles for suitcases, bags, etc. |
-
1987
- 1987-07-31 JP JP1987116730U patent/JPS6445443U/ja active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6028485B2 (en) * | 1980-10-31 | 1985-07-05 | 株式会社松崎 | Handles for suitcases, bags, etc. |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2015098937A1 (en) * | 2013-12-27 | 2015-07-02 | ダイキン工業株式会社 | Overvoltage protection circuit and power conversion device provided therewith |
| JP2015144542A (en) * | 2013-12-27 | 2015-08-06 | ダイキン工業株式会社 | Overvoltage protection circuit and power conversion equipment having the same |
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