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
Application number
JP8630785U
Other languages
Japanese (ja)
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed filed Critical
Priority to JP8630785U priority Critical patent/JPS625277U/ja
Publication of JPS625277U publication Critical patent/JPS625277U/ja
Pending legal-status Critical Current

Links

Landscapes

  • Measurement Of Current Or Voltage (AREA)
  • Protection Of Static Devices (AREA)

Description

【図面の簡単な説明】[Brief explanation of the drawing]

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)

【実用新案登録請求の範囲】[Scope of utility model registration request] 検出レベルまで電源電圧を下げるトランスと、
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.
JP8630785U 1985-06-10 1985-06-10 Pending JPS625277U (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (2)

* Cited by examiner, † Cited by third party
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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