JPH02133752U - - Google Patents
Info
- Publication number
- JPH02133752U JPH02133752U JP4084989U JP4084989U JPH02133752U JP H02133752 U JPH02133752 U JP H02133752U JP 4084989 U JP4084989 U JP 4084989U JP 4084989 U JP4084989 U JP 4084989U JP H02133752 U JPH02133752 U JP H02133752U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- pair
- conductive
- zener diodes
- become conductive
- 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 2
- 230000005856 abnormality Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000012806 monitoring device Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
Landscapes
- Power Sources (AREA)
- Control Of Voltage And Current In General (AREA)
Description
図面は本考案の一実施例を示す回路図である。
１…＋５Ｖ電源、２…＋１２Ｖ電源、３…−１
２Ｖ電源、６，８…監視回路、１２…ツエナーダ
イオード、１３，１９…発行ダイオード、１４…
ホトトランジスタ、２０…レジスタ。
２Ｖ電源、６，８…監視回路、１２…ツエナーダ
イオード、１３，１９…発行ダイオード、１４…
ホトトランジスタ、２０…レジスタ。
Claims (1)
- ＋５Ｖ電源と±１２Ｖ電源を持つマルチバス伝
送装置において、前記±１２Ｖ電源が所定レベル
を越えたか否かで夫々導通・非導通になる一対の
ツエナーダイオードと、前記＋５Ｖ電源を動作条
件にし前記ツエナーダイオードの導通・非導通で
夫々該±１２Ｖ電源の正常・異常の検出信号を得
る一対のホトカプラと、このホトカプラの検出出
力を入力とするプロセツサの割込みステータスレ
ジスタとを備えたことを特徴とす電源監視回路。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4084989U JPH02133752U (ja) | 1989-04-06 | 1989-04-06 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4084989U JPH02133752U (ja) | 1989-04-06 | 1989-04-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH02133752U true JPH02133752U (ja) | 1990-11-06 |
Family
ID=31550998
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4084989U Pending JPH02133752U (ja) | 1989-04-06 | 1989-04-06 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH02133752U (ja) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566628A (en) * | 1979-06-26 | 1981-01-23 | Hitachi Ltd | Power decision signal generator circuit |
| JPS5660357A (en) * | 1979-10-24 | 1981-05-25 | Toshiba Corp | Voltage detecting circuit |
| JPS6217853A (ja) * | 1985-07-16 | 1987-01-26 | Toshiba Corp | デジタル出力装置 |
| JPS62138014A (ja) * | 1985-12-09 | 1987-06-20 | 松下電器産業株式会社 | 制御装置の保護回路 |
-
1989
- 1989-04-06 JP JP4084989U patent/JPH02133752U/ja active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS566628A (en) * | 1979-06-26 | 1981-01-23 | Hitachi Ltd | Power decision signal generator circuit |
| JPS5660357A (en) * | 1979-10-24 | 1981-05-25 | Toshiba Corp | Voltage detecting circuit |
| JPS6217853A (ja) * | 1985-07-16 | 1987-01-26 | Toshiba Corp | デジタル出力装置 |
| JPS62138014A (ja) * | 1985-12-09 | 1987-06-20 | 松下電器産業株式会社 | 制御装置の保護回路 |