JPH0223731U - - Google Patents
Info
- Publication number
- JPH0223731U JPH0223731U JP10044288U JP10044288U JPH0223731U JP H0223731 U JPH0223731 U JP H0223731U JP 10044288 U JP10044288 U JP 10044288U JP 10044288 U JP10044288 U JP 10044288U JP H0223731 U JPH0223731 U JP H0223731U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- voltage
- predetermined value
- reached
- detects
- 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)
- Protection Of Static Devices (AREA)
- Power Sources (AREA)
Description
第１図は本考案に係る電源の異状検出回路の一
実施例を示す構成図、第２図は遅延部の構成図、
第３図はその動作を説明する為のタイムチヤート
、第４図は従来の電源の異状検出回路の構成図、
第５図はその動作を説明する為のタイムチヤート
である。
１，４，５……整流平滑部、６……検出部、７
……フオトカプラ、１０……遅延部、１１……遅
延発生部、１２……ＡＮＤゲート、１３……ＯＲ
ゲート。
FIG. 1 is a block diagram showing an embodiment of a power supply abnormality detection circuit according to the present invention, FIG. 2 is a block diagram of a delay section,
Figure 3 is a time chart to explain its operation, Figure 4 is a configuration diagram of a conventional power supply abnormality detection circuit,
FIG. 5 is a time chart for explaining the operation. 1, 4, 5... Rectifying and smoothing section, 6... Detecting section, 7
...Photocoupler, 10...Delay section, 11...Delay generation section, 12...AND gate, 13...OR
Gate.
Claims (1)
次電源を作成する電源部と、前記１次電源の電圧
が所定の値になつたことを検出する電圧検出部と
、この電圧検出部の出力及びこれを遅延させた信
号から前記１次電源の電圧が所定の値以上である
ことを表わす信号及び前記２次電源の正常／異状
を模擬する信号とを発生させる遅延部とを有する
ことを特徴とする電源の異状検出回路。 A primary power supply is input and a predetermined 2
A power supply unit that creates a secondary power supply, a voltage detection unit that detects that the voltage of the primary power supply has reached a predetermined value, and a voltage detection unit that detects that the voltage of the primary power supply has reached a predetermined value. 1. A power supply abnormality detection circuit comprising: a delay unit that generates a signal indicating that the voltage is equal to or higher than a predetermined value and a signal simulating normality/abnormality of the secondary power supply.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10044288U JPH0223731U (en) | 1988-07-28 | 1988-07-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP10044288U JPH0223731U (en) | 1988-07-28 | 1988-07-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0223731U true JPH0223731U (en) | 1990-02-16 |
Family
ID=31328516
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP10044288U Pending JPH0223731U (en) | 1988-07-28 | 1988-07-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0223731U (en) |
-
1988
- 1988-07-28 JP JP10044288U patent/JPH0223731U/ja active Pending
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