JPS625277U - - Google Patents
Info
- Publication number
- JPS625277U JPS625277U JP8630785U JP8630785U JPS625277U JP S625277 U JPS625277 U JP S625277U JP 8630785 U JP8630785 U JP 8630785U JP 8630785 U JP8630785 U JP 8630785U JP S625277 U JPS625277 U JP S625277U
- Authority
- JP
- Japan
- Prior art keywords
- comparator
- power supply
- value
- supply voltage
- detection
- 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 description 8
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Protection Of Static Devices (AREA)
Description
第1図は本考案の一実施例のブロツク図、第2
図は検出回路の各部の波形図である。
a…トランス、b…整流回路、c…A/D変換
器、d…D/A変換器、e…電源電圧周期検出器
、f…検出基準クロツク選択器、g…検出基準ク
ロツク発生器、h…コンパレータ、i…コンパレ
ータ。
Fig. 1 is a block diagram of an embodiment of the present invention;
The figure is a waveform diagram of each part of the detection circuit. a...Transformer, b...Rectifier circuit, c...A/D converter, d...D/A converter, e...Power supply voltage cycle detector, f...Detection reference clock selector, g...Detection reference clock generator, h ...Comparator, i...Comparator.
Claims (1)
電源電圧の周波数に適した検出範囲を選択する装
置と、電源電圧の周波数を選択する基本クロツク
発生装置と検出した値が渦電圧かを比較するコン
パレータと検出した値が不足電圧かを比較するコ
ンパレータより成る検出装置において、検出範囲
の最大値を保持するA/D変換器、及び比較する
コンパレータへのアナログ値へ変換するD/A変
換器を設けたことを特徴とする電源電圧過電圧・
不足電圧検出装置。 A transformer that lowers the power supply voltage to the detection level,
A device that selects a detection range appropriate to the frequency of the power supply voltage, a basic clock generator that selects the frequency of the power supply voltage, a comparator that compares whether the detected value is an eddy voltage, and a comparator that compares whether the detected value is an undervoltage. A detection device comprising an A/D converter that holds the maximum value of the detection range, and a D/A converter that converts the value into an analog value for a comparator for comparison.
Undervoltage detection device.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8630785U JPS625277U (en) | 1985-06-10 | 1985-06-10 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP8630785U JPS625277U (en) | 1985-06-10 | 1985-06-10 |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS625277U true JPS625277U (en) | 1987-01-13 |
Family
ID=30942491
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP8630785U Pending JPS625277U (en) | 1985-06-10 | 1985-06-10 |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS625277U (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0638516U (en) * | 1992-11-07 | 1994-05-24 | 昭次 園川 | Water purification device for appreciation |
JPH07322789A (en) * | 1995-06-15 | 1995-12-12 | Masahiko Aoyama | Filtration of water in water tank |
-
1985
- 1985-06-10 JP JP8630785U patent/JPS625277U/ja active Pending
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0638516U (en) * | 1992-11-07 | 1994-05-24 | 昭次 園川 | Water purification device for appreciation |
JPH07322789A (en) * | 1995-06-15 | 1995-12-12 | Masahiko Aoyama | Filtration of water in water tank |
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