JPS58147019U - power protection circuit - Google Patents
power protection circuitInfo
- Publication number
- JPS58147019U JPS58147019U JP4182782U JP4182782U JPS58147019U JP S58147019 U JPS58147019 U JP S58147019U JP 4182782 U JP4182782 U JP 4182782U JP 4182782 U JP4182782 U JP 4182782U JP S58147019 U JPS58147019 U JP S58147019U
- Authority
- JP
- Japan
- Prior art keywords
- transistor
- protection circuit
- power protection
- zener diode
- electrode
- 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図は従来の電源保護回路の回路図、第２図は本考案
による電源保護回路の一実施例の回路図である。
図中符号１は入力端子、２は出力端子、Ｄｌはツェナー
ダイオード、Ｄ２はダイオードである。FIG. 1 is a circuit diagram of a conventional power protection circuit, and FIG. 2 is a circuit diagram of an embodiment of the power protection circuit according to the present invention. In the figure, numeral 1 is an input terminal, 2 is an output terminal, Dl is a Zener diode, and D2 is a diode.
Claims (1)
と、該第１のトランジスタのベース電流を制御する第２
のトランジメタと、該第２のトランジスタのベースに第
１の電極が接続され、第２の電極が抵抗を介して前記電
源に接続されているツェナーダイオードと、該ツェナー
ダイオードの第２の電極にアノードが接続され、前記負
荷側にカソードが接続されているダイオードとを具備し
、前記ツェナーダイオ、−ドの動作に応じて前記第２の
トランジスタ並びに前記第１のトランジスタをオン・オ
フするよう構成したことを特徴とする電源保護回路。A first transistor that cuts off power supplied to the load side, and a second transistor that controls the base current of the first transistor.
a Zener diode having a first electrode connected to the base of the second transistor and a second electrode connected to the power supply via a resistor, and an anode connected to the second electrode of the Zener diode. and a diode having a cathode connected to the load side, and the second transistor and the first transistor are turned on and off according to the operation of the Zener diode and the - node. A power protection circuit characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4182782U JPS58147019U (en) | 1982-03-26 | 1982-03-26 | power protection circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4182782U JPS58147019U (en) | 1982-03-26 | 1982-03-26 | power protection circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS58147019U true JPS58147019U (en) | 1983-10-03 |
Family
ID=30053002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4182782U Pending JPS58147019U (en) | 1982-03-26 | 1982-03-26 | power protection circuit |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS58147019U (en) |
-
1982
- 1982-03-26 JP JP4182782U patent/JPS58147019U/en active Pending
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