JPS6411413A - Clearing method for electronic circuit - Google Patents
Clearing method for electronic circuitInfo
- Publication number
- JPS6411413A JPS6411413A JP16537387A JP16537387A JPS6411413A JP S6411413 A JPS6411413 A JP S6411413A JP 16537387 A JP16537387 A JP 16537387A JP 16537387 A JP16537387 A JP 16537387A JP S6411413 A JPS6411413 A JP S6411413A
- Authority
- JP
- Japan
- Prior art keywords
- power source
- comparator
- source vcc
- output
- voltage
- 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
- Electronic Switches (AREA)
Abstract
PURPOSE:To minimize system malfunction without reference to the performance of a power source by using a voltage comparator for a power source level detection part, providing a delay element on its one side, and resetting a clear mode after a constant level is reached after the power source is turned on. CONSTITUTION:The + input of the voltage comparator 6 rises simultaneously with the power-on operation of the power source Vcc and the output of the comparator 6 turns on when the power source Vcc reaches the operating voltage of the comparator 6. A TR 11 connected to the output of the comparator 6, on the other hand, is cleared before turning on when the power source Vcc exceeds the base-emitter saturation voltage of the TR 11. Further, the - input of the comparator 6 is delayed by a capacitor 2 and after the power source Vcc is set up above the constant level, the output of the comparator 6 is inverted to reset the clear mode. Further, when the power source is turned off, a clear circuit operates having a detection point where a connected load (smoothing capacitor, IC circuit, etc.) does not exert any influence, and clearing operation is performed before a negative-side power source Vcc is ceased.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16537387A JPS6411413A (en) | 1987-07-03 | 1987-07-03 | Clearing method for electronic circuit |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP16537387A JPS6411413A (en) | 1987-07-03 | 1987-07-03 | Clearing method for electronic circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS6411413A true JPS6411413A (en) | 1989-01-17 |
Family
ID=15811142
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP16537387A Pending JPS6411413A (en) | 1987-07-03 | 1987-07-03 | Clearing method for electronic circuit |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS6411413A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7034581B2 (en) * | 2002-11-14 | 2006-04-25 | Seiko Instruments Inc. | Voltage detecting circuit |
-
1987
- 1987-07-03 JP JP16537387A patent/JPS6411413A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7034581B2 (en) * | 2002-11-14 | 2006-04-25 | Seiko Instruments Inc. | Voltage detecting circuit |
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