JPS58133821U - Overvoltage protection circuit - Google Patents
Overvoltage protection circuitInfo
- Publication number
- JPS58133821U JPS58133821U JP2857082U JP2857082U JPS58133821U JP S58133821 U JPS58133821 U JP S58133821U JP 2857082 U JP2857082 U JP 2857082U JP 2857082 U JP2857082 U JP 2857082U JP S58133821 U JPS58133821 U JP S58133821U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- constant voltage
- series circuit
- overvoltage protection
- thyristor
- 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
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
第１図は定電圧装置の回路図、第２図は本考案の一実施
例を示す回路図である。
３・・・ヒユーズ、４・・・定電圧回路、５・・・トラ
ンジスタ、６・・・負荷、訃・・誤差増幅器、１１・・
・限流抵抗、１２・・・逆流防止ダイオード、１３・・
・サイリスタ、１４・・・ツェナーダイオード、１５・
・・抵抗、１６・・・過電圧保護回路。FIG. 1 is a circuit diagram of a constant voltage device, and FIG. 2 is a circuit diagram showing an embodiment of the present invention. 3... Fuse, 4... Constant voltage circuit, 5... Transistor, 6... Load, Error amplifier, 11...
・Current-limiting resistor, 12... Backflow prevention diode, 13...
・Thyristor, 14...Zener diode, 15・
...Resistance, 16...Overvoltage protection circuit.
Claims (1)
とする定電圧回路を介して負荷に定電圧を供給する定電
圧装置において、前記定電圧回路と直流電源との間の電
路に介挿された電流ル制御用の限流抵抗と、前記定電圧
回路の出力側に接続され、前記定電圧回路が所定の定電
圧出力を送出しているときには排導通状態を保つツェナ
ーダイオードと抵抗から成る第１直列回路と、この第１
直列回路に並列接続され、前記ツェナーダイオードが導
通したときにオンされるサイリスタとダイオードから成
る第２直列回路と、この第２直列回路のサイリスクのサ
ノード側と前記限流抵抗と定電圧回路の共通接続点に接
続されたバイパス回路とを設けた事を特徴とする過電圧
保護回路。In a constant voltage device that supplies a constant voltage to a load via a constant voltage circuit that uses a transistor as a control element to connect a DC power source connected to the input side, the device is inserted into an electric path between the constant voltage circuit and the DC power source. A first circuit comprising a current limiting resistor for current control, and a Zener diode and a resistor connected to the output side of the constant voltage circuit and maintained in a discharging state when the constant voltage circuit is sending out a predetermined constant voltage output. Series circuit and this first
a second series circuit consisting of a thyristor and a diode that are connected in parallel to the series circuit and are turned on when the Zener diode conducts; and a second series circuit that is common to the sanode side of the thyristor of the second series circuit, the current limiting resistor, and the constant voltage circuit. An overvoltage protection circuit characterized by having a bypass circuit connected to a connection point.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2857082U JPS58133821U (en) | 1982-03-01 | 1982-03-01 | Overvoltage protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2857082U JPS58133821U (en) | 1982-03-01 | 1982-03-01 | Overvoltage protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58133821U true JPS58133821U (en) | 1983-09-09 |
Family
ID=30040411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2857082U Pending JPS58133821U (en) | 1982-03-01 | 1982-03-01 | Overvoltage protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58133821U (en) |
-
1982
- 1982-03-01 JP JP2857082U patent/JPS58133821U/en active Pending
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