JPS5624621A - Fault voltage generating circuit - Google Patents
Fault voltage generating circuitInfo
- Publication number
- JPS5624621A JPS5624621A JP9946779A JP9946779A JPS5624621A JP S5624621 A JPS5624621 A JP S5624621A JP 9946779 A JP9946779 A JP 9946779A JP 9946779 A JP9946779 A JP 9946779A JP S5624621 A JPS5624621 A JP S5624621A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- power source
- circuit
- generating circuit
- feed back
- 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
- Power Sources (AREA)
- Direct Current Feeding And Distribution (AREA)
Abstract
PURPOSE: To shorten the transition time from on to off conditions and follow the change of the power source voltage of the computer by making the on and off conditions of two transistors of the fault voltage generating circuit at the same time different from each other.
CONSTITUTION: When during the current flow, the power source voltage is fed to the power source terminal 6 of the microcomputer 5 through the constant voltage circuit 10 from the power source circuit 3, the voltage is added to the fault voltage input terminal 7 through the fault voltage generating circuit 4. In this circuit 4, two transistors TR8, 9 and Zener diodes 11, 18 and voltage dividing resistances 12, 13 and a positive feed back resistance 17 and the like with respect to TR9. Then, the voltage is impressed to the circuit 4 from the power source circuit 3 the positive feed back is applied to TR9 to lower instantaneously the voltage of the input terminal 7 and prevent the voltage lowering of the power source terminal 6. Under the feed back condition, the output of the circuit 10 is raised to a predetermined number and added to the power source terminal 6 and at the same time, the voltage of the input terminal 7 is delayed from the voltage by TR8 to shorten the transition time from on to off.
COPYRIGHT: (C)1981,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9946779A JPS5624621A (en) | 1979-08-06 | 1979-08-06 | Fault voltage generating circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP9946779A JPS5624621A (en) | 1979-08-06 | 1979-08-06 | Fault voltage generating circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS5624621A true JPS5624621A (en) | 1981-03-09 |
Family
ID=14248107
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP9946779A Pending JPS5624621A (en) | 1979-08-06 | 1979-08-06 | Fault voltage generating circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS5624621A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100418706B1 (en) * | 2001-12-29 | 2004-02-14 | 삼성전자주식회사 | Computer system |
-
1979
- 1979-08-06 JP JP9946779A patent/JPS5624621A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100418706B1 (en) * | 2001-12-29 | 2004-02-14 | 삼성전자주식회사 | Computer system |
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