JPS6198335U - - Google Patents
Info
- Publication number
- JPS6198335U JPS6198335U JP18347184U JP18347184U JPS6198335U JP S6198335 U JPS6198335 U JP S6198335U JP 18347184 U JP18347184 U JP 18347184U JP 18347184 U JP18347184 U JP 18347184U JP S6198335 U JPS6198335 U JP S6198335U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- transistor
- supply voltage
- certain value
- main
- 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
- 238000001514 detection method Methods 0.000 claims description 3
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案に係る過電圧保護装置の一実施
例を示す回路図、第２図は使用例を示すブロツク
図である。
１１……電圧検出部、１２……出力部、Ｒ１〜
Ｒ７……抵抗、ＺＤ１……ツエナーダイオード、
Ｑ１〜Ｑ３……トランジスタ、ｔｉ……入力端、
ｔｏ……出力端。
FIG. 1 is a circuit diagram showing an embodiment of the overvoltage protection device according to the present invention, and FIG. 2 is a block diagram showing an example of its use. 11... Voltage detection section, 12... Output section, R1~
R7...Resistor, ZD1...Zener diode,
Q1 to Q3...transistor, ti...input terminal,
to...output end.
Claims (1)
ツエナーダイオードのツエナー電圧を基準に判別
して制御信号作成用トランジスタのオン、オフを
行う電圧検出部と、入力端と出力端の間に位置す
る主トランジスタ及びこのトランジスタのオン、
オフ制御を行う補助トランジスタを有し、前記電
圧検出部で作成した制御信号を補助トランジスタ
のベースに受けて電源電圧がある値以下のときは
主、補助トランジスタが共にオン状態となつて電
源電圧の出力端への供給を許容し、ある値を越え
たときは主、補助トランジスタが共にオフ状態と
なつて電源電圧の出力端への供給を阻止する出力
部とを備えてなる過電圧保護装置。 Located between the input terminal and the output terminal and the voltage detection section that determines whether the power supply voltage applied to the input terminal is below a certain value based on the Zener voltage of the Zener diode and turns on or off the transistor for generating the control signal. the main transistor and the on of this transistor,
It has an auxiliary transistor that performs off control, and when the base of the auxiliary transistor receives the control signal generated by the voltage detection section, and the power supply voltage is below a certain value, both the main and auxiliary transistors are turned on, and the power supply voltage is reduced. An overvoltage protection device comprising an output section that allows power supply voltage to be supplied to the output terminal, and when a certain value is exceeded, both the main and auxiliary transistors are turned off to block the supply of power supply voltage to the output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18347184U JPS6198335U (en) | 1984-12-03 | 1984-12-03 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18347184U JPS6198335U (en) | 1984-12-03 | 1984-12-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS6198335U true JPS6198335U (en) | 1986-06-24 |
Family
ID=30740967
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18347184U Pending JPS6198335U (en) | 1984-12-03 | 1984-12-03 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6198335U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01135888U (en) * | 1988-03-10 | 1989-09-18 | ||
| US11787217B2 (en) | 2019-04-16 | 2023-10-17 | 3M Innovative Properties Company | Over-laminate film and graphic laminate |
-
1984
- 1984-12-03 JP JP18347184U patent/JPS6198335U/ja active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH01135888U (en) * | 1988-03-10 | 1989-09-18 | ||
| US11787217B2 (en) | 2019-04-16 | 2023-10-17 | 3M Innovative Properties Company | Over-laminate film and graphic laminate |