JPS5953632U - DC power supply circuit power failure detection device - Google Patents
DC power supply circuit power failure detection deviceInfo
- Publication number
- JPS5953632U JPS5953632U JP14814782U JP14814782U JPS5953632U JP S5953632 U JPS5953632 U JP S5953632U JP 14814782 U JP14814782 U JP 14814782U JP 14814782 U JP14814782 U JP 14814782U JP S5953632 U JPS5953632 U JP S5953632U
- Authority
- JP
- Japan
- Prior art keywords
- power failure
- failure detection
- power supply
- supply circuit
- circuit
- 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
Landscapes
- Emergency Protection Circuit Devices (AREA)
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図は従来の停電検出方法の一例を示す回路図、第２
図は第１図の回路の動作を説明する為の電圧特性図、第
３−は従来の停電検出方法の他の実施例を示す回路図、
第４図は本考案の一実施例を示す回路図である。
１・・・整流回路、２・・・スイッチングレギュレータ
回路、３・・・負荷、４・・・平滑コンデンサ、７・・
・停電検出回路、２１・・・ダイオード、２３・・・抵
抗。
□−□□Figure 1 is a circuit diagram showing an example of a conventional power outage detection method;
The figure is a voltage characteristic diagram for explaining the operation of the circuit in Figure 1, and Figure 3- is a circuit diagram showing another embodiment of the conventional power failure detection method.
FIG. 4 is a circuit diagram showing an embodiment of the present invention. 1... Rectifier circuit, 2... Switching regulator circuit, 3... Load, 4... Smoothing capacitor, 7...
- Power failure detection circuit, 21... diode, 23... resistor. □−□□
Claims (1)
れた平滑コンデンサと、前記整流回路と負荷を結ぶ電路
に介挿されたスイッチングレギュレータ回路とを有する
直流電源回路において、前記整流回路の正側出力端と前
記平滑コンデンサを結ぶ電路に該整流回路と順方向にな
るよう介挿されたダイオードと、このダイオードのアノ
ード側の電圧と前記負荷に印加される電圧とを比較する
ことによって停電を検出し、負荷に保護信号を与える停
電検出回路とを備えたことを特徴とする直流電源回路の
停電検出装置。A DC power supply circuit including a rectifier circuit, a smoothing capacitor connected in parallel between the positive and negative output terminals of the rectifier circuit, and a switching regulator circuit inserted in an electric path connecting the rectifier circuit and a load. A diode is inserted in the electrical path connecting the side output terminal and the smoothing capacitor so as to be in the forward direction of the rectifier circuit, and the voltage on the anode side of this diode is compared with the voltage applied to the load to prevent a power outage. A power failure detection device for a DC power supply circuit, comprising a power failure detection circuit that detects a power failure and provides a protection signal to a load.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14814782U JPS5953632U (en) | 1982-09-30 | 1982-09-30 | DC power supply circuit power failure detection device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP14814782U JPS5953632U (en) | 1982-09-30 | 1982-09-30 | DC power supply circuit power failure detection device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPS5953632U true JPS5953632U (en) | 1984-04-09 |
Family
ID=30329236
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP14814782U Pending JPS5953632U (en) | 1982-09-30 | 1982-09-30 | DC power supply circuit power failure detection device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5953632U (en) |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5773678A (en) * | 1980-10-24 | 1982-05-08 | Matsushita Electric Ind Co Ltd | Detector for momentary power failure |
-
1982
- 1982-09-30 JP JP14814782U patent/JPS5953632U/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5773678A (en) * | 1980-10-24 | 1982-05-08 | Matsushita Electric Ind Co Ltd | Detector for momentary power failure |
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