JPS61114374U - - Google Patents
Info
- Publication number
- JPS61114374U JPS61114374U JP19897084U JP19897084U JPS61114374U JP S61114374 U JPS61114374 U JP S61114374U JP 19897084 U JP19897084 U JP 19897084U JP 19897084 U JP19897084 U JP 19897084U JP S61114374 U JPS61114374 U JP S61114374U
- Authority
- JP
- Japan
- Prior art keywords
- power supply
- supply voltage
- monostable multivibrator
- output
- time
- 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.)
- Granted
Links
- 238000012806 monitoring device Methods 0.000 claims description 4
- 230000005856 abnormality Effects 0.000 claims description 3
- 238000009499 grossing Methods 0.000 claims description 2
- 230000002159 abnormal effect Effects 0.000 claims 2
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Measurement Of Current Or Voltage (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
第１図はこの考案による電源電圧の異状変動監
視装置のブロツク線図の一実施例を示し、第２図
はその信号波形図である。
図中、３は電源ライン、６は半波整流回路、７
はコンパレータ、８は全波整流回路、９は平滑回
路、１３，１８は単安定マルチバイブレータ、１
４は時定数切換回路、１６，２０は表示器である
。
FIG. 1 shows an embodiment of a block diagram of a power supply voltage abnormality fluctuation monitoring device according to this invention, and FIG. 2 is a signal waveform diagram thereof. In the figure, 3 is a power line, 6 is a half-wave rectifier circuit, and 7
is a comparator, 8 is a full-wave rectifier circuit, 9 is a smoothing circuit, 13 and 18 are monostable multivibrators, 1
4 is a time constant switching circuit, and 16 and 20 are indicators.
Claims (1)
一方の極性側に整流し上記電源電圧の異状変動の
有無を含むサンプル信号電圧を形成するための半
波整流回路と、 上記電源電圧を整流する全波整流回路、および
その整流出力を平滑にして基準信号電圧を形成す
るための平滑回路と、 該平滑回路で形成された上記基準信号電圧をし
きい値電圧となし、上記半波整流回路から出力さ
れるサンプル信号電圧を上記しきい値電圧と比較
するコンパレータと、 該コンパレータからの出力をトリガ信号とし該
トリガ信号の入力によつてオンとなり所定時間経
過後オフに反転する第１の単安定マルチバイブレ
ータと、 該単安定マルチバイブレータのオンからオフへ
の反転に応答してオフからオンに転じ所定時間経
過後オフとなる第２の単安定マルチバイブレータ
とを備え、 上記第１の単安定マルチバイブレータの出力に
より上記電源電圧の入力の有無を表示するととも
に、上記第２の単安定マルチバイブレータの出力
により上記電源電圧に含まれる異状変動の有無を
表示することを特徴とする電源電圧の異状変動監
視装置。 (2) 上記第１の単安定マルチバイブレータの立
ち上がりから立ち下がりまでの所定時間ｔ１は被
監視用電源電圧の周波数に応じて切り換えられ、
かつ、１サイクルの時間を中心として可変である
ことを特徴とする実用新案登録請求の範囲第１項
記載の電源電圧の異状変動監視装置。[Claims for Utility Model Registration] (1) A half-circuit for rectifying the monitored power supply voltage to either the + or - polarity side to form a sample signal voltage that includes the presence or absence of abnormal fluctuations in the power supply voltage. a full-wave rectifier circuit that rectifies the power supply voltage; a smoothing circuit that smooths the rectified output to form a reference signal voltage; a comparator that compares the sample signal voltage output from the half-wave rectifier circuit with the threshold voltage; a first monostable multivibrator that turns off after a predetermined period of time; and a second monostable multivibrator that turns from off to on in response to the turning of the monostable multivibrator from on to off and turns off after a predetermined period of time has elapsed. The output of the first monostable multivibrator indicates the presence or absence of input of the power supply voltage, and the output of the second monostable multivibrator indicates the presence or absence of abnormal fluctuations included in the power supply voltage. A power supply voltage abnormality fluctuation monitoring device characterized by: (2) The predetermined time t1 from the rise to the fall of the first monostable multivibrator is switched according to the frequency of the monitored power supply voltage,
The power supply voltage abnormality fluctuation monitoring device according to claim 1, wherein the power supply voltage fluctuation monitoring device is variable with respect to the time of one cycle.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984198970U JPH0521024Y2 (en) | 1984-12-28 | 1984-12-28 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1984198970U JPH0521024Y2 (en) | 1984-12-28 | 1984-12-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS61114374U true JPS61114374U (en) | 1986-07-19 |
| JPH0521024Y2 JPH0521024Y2 (en) | 1993-05-31 |
Family
ID=30758456
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1984198970U Expired - Lifetime JPH0521024Y2 (en) | 1984-12-28 | 1984-12-28 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0521024Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02221871A (en) * | 1989-02-21 | 1990-09-04 | Fujikura Ltd | Voltage monitor circuit |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58119727A (en) * | 1982-01-08 | 1983-07-16 | 富士ゼロックス株式会社 | Power source malfunction detecting circuit |
-
1984
- 1984-12-28 JP JP1984198970U patent/JPH0521024Y2/ja not_active Expired - Lifetime
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58119727A (en) * | 1982-01-08 | 1983-07-16 | 富士ゼロックス株式会社 | Power source malfunction detecting circuit |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH02221871A (en) * | 1989-02-21 | 1990-09-04 | Fujikura Ltd | Voltage monitor circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0521024Y2 (en) | 1993-05-31 |
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