JPS59192970A - Detecting circuit for voltage variation - Google Patents
Detecting circuit for voltage variationInfo
- Publication number
- JPS59192970A JPS59192970A JP6724883A JP6724883A JPS59192970A JP S59192970 A JPS59192970 A JP S59192970A JP 6724883 A JP6724883 A JP 6724883A JP 6724883 A JP6724883 A JP 6724883A JP S59192970 A JPS59192970 A JP S59192970A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- varies
- resistance
- voltage variation
- variation
- 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
- 239000003990 capacitor Substances 0.000 abstract 2
- 238000001514 detection method Methods 0.000 abstract 2
- 239000004065 semiconductor Substances 0.000 abstract 2
- 230000000875 corresponding Effects 0.000 abstract 1
Abstract
PURPOSE: To detect variation in power voltage over a wide range by using a semiconductor element which varies in resistance value freely as an equivalent resistance between output terminals of a diode bridge.
CONSTITUTION: The semiconductor element 1 which varies in internal resistance value freely is used as the equivalent resistance between output terminals of the diode bridge DB formed of diodes D1WD4 connected to a power source through a capacitor C1. This element 1 is controlled to increase the internal resistance of the element 1, and then the time constant determined by this resistance and capacity of the capacitor C1 increases; even when a source voltage varies slowly, a corresponding detection voltage is developed across the element 1 and rises above a reference voltage, so that a comparator 2 outputs a detection signal for the source voltage variation. Therefore, the source voltage variation such as a rise and a fall over a wide range is detected.
COPYRIGHT: (C)1984,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6724883A JPS59192970A (en) | 1983-04-15 | 1983-04-15 | Detecting circuit for voltage variation |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP6724883A JPS59192970A (en) | 1983-04-15 | 1983-04-15 | Detecting circuit for voltage variation |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS59192970A true JPS59192970A (en) | 1984-11-01 |
Family
ID=13339427
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP6724883A Pending JPS59192970A (en) | 1983-04-15 | 1983-04-15 | Detecting circuit for voltage variation |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS59192970A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5953765A (en) * | 1996-02-21 | 1999-09-21 | Aisin Seiki Kabushiki Kaisha | Sanitary device having commonly driven washing and drying devices |
-
1983
- 1983-04-15 JP JP6724883A patent/JPS59192970A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5953765A (en) * | 1996-02-21 | 1999-09-21 | Aisin Seiki Kabushiki Kaisha | Sanitary device having commonly driven washing and drying devices |
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