JPH0280834U - - Google Patents
Info
- Publication number
- JPH0280834U JPH0280834U JP15867488U JP15867488U JPH0280834U JP H0280834 U JPH0280834 U JP H0280834U JP 15867488 U JP15867488 U JP 15867488U JP 15867488 U JP15867488 U JP 15867488U JP H0280834 U JPH0280834 U JP H0280834U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- supply voltage
- peripheral
- cut
- 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
- 230000002093 peripheral effect Effects 0.000 claims description 14
- 238000001514 detection method Methods 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 7
Landscapes
- Power Sources (AREA)
Description
第１図は本考案による過電流検知回路の第１実
施例を適用した電子機器の一例を示すブロツク図
、第２図は第１図に示す検知保護回路の詳細な回
路図、第３図は第１図に示すメイン制御回路と拡
張制御回路の詳細なブロツク図、第４図は本考案
による過電流検知回路の第２実施例を適用した電
子機器の一例を示すブロツク図、第５図は第４図
に示す割込み回路の詳細な回路図、第６図は本考
案による過電流検知回路の第３実施例を適用した
電子機器の一例を示すブロツク図、第７図は第６
図に示す割込み回路の詳細な回路図、第８図は第
６図に示す基板ステータス送出部の詳細なブロツ
ク図、第９図は従来の過電流検出回路の一例を用
いた電子機器の一例を示すブロツク図である。
６……中央処理回路（メイン制御回路）、７…
…過電流検知回路（検知保護回路）、２０……周
辺回路（拡張制御回路）。
FIG. 1 is a block diagram showing an example of an electronic device to which the first embodiment of the overcurrent detection circuit according to the present invention is applied, FIG. 2 is a detailed circuit diagram of the detection protection circuit shown in FIG. 1, and FIG. Fig. 1 is a detailed block diagram of the main control circuit and expansion control circuit, Fig. 4 is a block diagram showing an example of an electronic device to which the second embodiment of the overcurrent detection circuit according to the present invention is applied, and Fig. 5 is a detailed block diagram of the main control circuit and expansion control circuit. FIG. 4 is a detailed circuit diagram of the interrupt circuit shown in FIG.
8 is a detailed block diagram of the board status sending section shown in FIG. 6, and FIG. 9 is an example of an electronic device using an example of a conventional overcurrent detection circuit. FIG. 6...Central processing circuit (main control circuit), 7...
...Overcurrent detection circuit (detection protection circuit), 20...Peripheral circuit (extension control circuit).
Claims (1)
き過負荷となつた周辺回路への電源電圧供給を停
止してシステム全体がダウンするのを防止する過
電流検知回路において、電源電圧供給がカツトさ
れた周辺回路側から電源電圧供給がカツトされた
ことを示す信号を出力させて中央処理回路側で各
周辺回路のいずれかがダウンしたことを認識させ
るようにしたことを特徴とする過電流検知回路。 (2) 各周辺回路のいずれかが過負荷になつたと
き過負荷となつた周辺回路への電源電圧供給を停
止してシステム全体がダウンするのを防止する過
電流検知回路において、電源電圧供給がカツトさ
れた周辺回路側から電源電圧供給がカツトされた
ことを示す信号を発生させ、中央処理回路側で各
周辺回路をアクセスすることによつてどの周辺回
路がダウンしたか認識し得るようにしたことを特
徴とする過電流検知回路。 (3) 各周辺回路のいずれかが過負荷になつたと
き過負荷となつた周辺回路への電源電圧供給を停
止してシステム全体がダウンするのを防止する過
電流検知回路において、電源電圧供給がカツトさ
れた周辺回路側から電源電圧供給がカツトされた
ことを示す信号を発生させて中央処理回路側の基
板ステータス送出部に供給させ、中央処理回路側
のＣＰＵが前記基板ステータス送出部をアクセス
することによつてどの周辺回路がダウンしたか認
識し得るようにしたことを特徴とする過電流検知
回路。[Claims for Utility Model Registration] (1) When any of the peripheral circuits becomes overloaded, the power supply voltage supply to the overloaded peripheral circuit is stopped to prevent the entire system from going down. In the current detection circuit, a signal indicating that the power supply voltage supply has been cut is output from the peripheral circuit side where the power supply voltage supply is cut off, so that the central processing circuit side recognizes that one of the peripheral circuits is down. An overcurrent detection circuit characterized by: (2) When any of the peripheral circuits becomes overloaded, the overcurrent detection circuit stops the power supply voltage supply to the overloaded peripheral circuit to prevent the entire system from going down. By generating a signal indicating that the power supply voltage supply has been cut off from the peripheral circuit side where the power supply voltage has been cut off, and by accessing each peripheral circuit on the central processing circuit side, it is possible to recognize which peripheral circuit has gone down. An overcurrent detection circuit characterized by: (3) When one of the peripheral circuits becomes overloaded, the overcurrent detection circuit stops the power supply voltage supply to the overloaded peripheral circuit to prevent the entire system from going down. A signal indicating that the power supply voltage supply is cut off is generated from the peripheral circuit side where the power supply voltage is cut off, and the signal is supplied to the board status sending section on the central processing circuit side, and the CPU on the central processing circuit side accesses the board status sending section. An overcurrent detection circuit characterized in that it is possible to recognize which peripheral circuit has gone down by doing so.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15867488U JPH0280834U (en) | 1988-12-06 | 1988-12-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP15867488U JPH0280834U (en) | 1988-12-06 | 1988-12-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0280834U true JPH0280834U (en) | 1990-06-21 |
Family
ID=31439213
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP15867488U Pending JPH0280834U (en) | 1988-12-06 | 1988-12-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0280834U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007004591A (en) * | 2005-06-24 | 2007-01-11 | Ricoh Co Ltd | Constant voltage circuit, power supply system apparatus having a plurality of constant voltage circuits, and control method thereof |
-
1988
- 1988-12-06 JP JP15867488U patent/JPH0280834U/ja active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007004591A (en) * | 2005-06-24 | 2007-01-11 | Ricoh Co Ltd | Constant voltage circuit, power supply system apparatus having a plurality of constant voltage circuits, and control method thereof |
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