JPS649432U - - Google Patents
Info
- Publication number
- JPS649432U JPS649432U JP10277987U JP10277987U JPS649432U JP S649432 U JPS649432 U JP S649432U JP 10277987 U JP10277987 U JP 10277987U JP 10277987 U JP10277987 U JP 10277987U JP S649432 U JPS649432 U JP S649432U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- power
- supply system
- transistor
- output terminal
- 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 4
- 238000010586 diagram Methods 0.000 description 1
Description
第１図は本考案に係る停電検出回路の曲型的な
一実施例を示す要部回路図である。
１０……電源系統（５Ｖ）、１２……電源系統
（２４Ｖ）、１４……バツテリ、１６，１８……
抵抗器、２０……トランジスタ、２２……抵抗器
、２４……停電判別回路。
FIG. 1 is a main circuit diagram showing a curved embodiment of a power failure detection circuit according to the present invention. 10...Power system (5V), 12...Power system (24V), 14...Battery, 16, 18...
Resistor, 20...Transistor, 22...Resistor, 24...Power failure determination circuit.
Claims (1)
系統を備えた電子制御装置において、いずれかの
電源系統に停電時電源をバツクアツプするバツテ
リを接続配置し、バツクアツプ電源を有しない第
１の電源系統より分圧抵抗器を介して出力端子を
導出し、この出力端子とバツクアツプ電源を有す
る第２の電源系統との間に第１の電源系統の停電
時にスイツチング動作する素子とその時の電圧変
動により停電を判別する停電判別回路とを設ける
ことを特徴とする停電検出回路。 (2) 実用新案登録請求の範囲第１項記載の停電
検出回路において、停電時にスイツチング動作す
る素子はトランジスタからなり、第１の電源系統
からの出力端子をトランジスタのベース端子に接
続し、第２の電源系統の出力端子をトランジスタ
のコレクタ端子に接続すると共にこのコレクタ端
子に前記第２の電源系統で作動する停電判別回路
を接続し、さらにトランジスタのエミツタ端子を
直接接地してなる停電検出回路。[Scope of Claim for Utility Model Registration] (1) In an electronic control device equipped with two or more power supply systems consisting of different DC power supply voltages, a battery for backing up power during a power outage is connected to one of the power supply systems, and a backup power supply is provided. An output terminal is led out from a first power supply system that does not have a power supply system through a voltage dividing resistor, and a switching operation is performed in the event of a power outage in the first power supply system between this output terminal and a second power supply system that has a backup power supply. A power outage detection circuit comprising an element and a power outage determination circuit that determines a power outage based on voltage fluctuations at that time. (2) Utility Model Registration In the power failure detection circuit described in claim 1, the element that performs a switching operation during a power failure is a transistor, the output terminal from the first power supply system is connected to the base terminal of the transistor, and the second A power failure detection circuit which connects the output terminal of the power supply system to the collector terminal of the transistor, connects to this collector terminal a power failure determination circuit that operates in the second power supply system, and further directly grounds the emitter terminal of the transistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10277987U JPS649432U (en) | 1987-07-06 | 1987-07-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10277987U JPS649432U (en) | 1987-07-06 | 1987-07-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS649432U true JPS649432U (en) | 1989-01-19 |
Family
ID=31333002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10277987U Pending JPS649432U (en) | 1987-07-06 | 1987-07-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS649432U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS56153599A (en) * | 1980-03-28 | 1981-11-27 | Pitney Bowes Inc | Memory retaining unit at power failure time |
| JPS5947234B2 (en) * | 1976-08-27 | 1984-11-17 | バブコツク日立株式会社 | Sealed heat transfer device and heat exchanger with axial centrifugal thrust |
-
1987
- 1987-07-06 JP JP10277987U patent/JPS649432U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5947234B2 (en) * | 1976-08-27 | 1984-11-17 | バブコツク日立株式会社 | Sealed heat transfer device and heat exchanger with axial centrifugal thrust |
| JPS56153599A (en) * | 1980-03-28 | 1981-11-27 | Pitney Bowes Inc | Memory retaining unit at power failure time |
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