JPH0214072U - - Google Patents
Info
- Publication number
- JPH0214072U JPH0214072U JP9320088U JP9320088U JPH0214072U JP H0214072 U JPH0214072 U JP H0214072U JP 9320088 U JP9320088 U JP 9320088U JP 9320088 U JP9320088 U JP 9320088U JP H0214072 U JPH0214072 U JP H0214072U
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- power supply
- emitting diode
- photocoupler
- 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
- 238000001514 detection method Methods 0.000 claims description 11
- 230000005856 abnormality Effects 0.000 claims description 7
- 239000003990 capacitor Substances 0.000 claims description 5
- 238000009499 grossing Methods 0.000 claims description 3
- 230000008878 coupling Effects 0.000 claims 1
- 238000010168 coupling process Methods 0.000 claims 1
- 238000005859 coupling reaction Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 101100194363 Schizosaccharomyces pombe (strain 972 / ATCC 24843) res2 gene Proteins 0.000 description 1
- 230000007274 generation of a signal involved in cell-cell signaling Effects 0.000 description 1
- 101150017059 pcd1 gene Proteins 0.000 description 1
- 101150037117 pct-1 gene Proteins 0.000 description 1
Landscapes
- Measurement Of Current Or Voltage (AREA)
Description
第１図および第２図は本考案の一実施例を示し
ており、第１図ａならびに第１図ｂは商用電源異
常検知装置の回路図、第２図はその動作波形の説
明図、第３図は従来の商用電源異常検知装置を示
す回路図、第４図はその動作波形の説明図である
。
１０……商用電源異常検知装置、２０……電圧
低下検知回路、２５……ヒステリシス回路、３０
……瞬停検知回路、４０……停電検知信号作成回
路、Ａ……商用電源、ＲＥＣ……整流器、Ｃ１…
…平滑用のコンデンサ、Ｃ２……コンデンサ、Ｄ
１……ダイオード、ＺＤ１，ＺＤ２……ツエナー
ダイオード、Ｒ３……第１の出力端抵抗（限流抵
抗）、Ｒ２３……第２の出力端抵抗（限流抵抗）
、Ｒ１，Ｒ２，Ｒ６……第１の分圧抵抗、Ｒ２１
，Ｒ２２……第２の分圧抵抗、Ｒ４，Ｒ５，Ｒ２
４……抵抗、Ｕ１……第１のシヤントレギユレー
タ、Ｕ２……第２のシヤントレギユレータ、ＰＣ
１……第１のフオトカプラ、ＰＣ２……第２のフ
オトカプラ、ＰＣＤ１……第１の発光ダイオード
、ＰＣＤ２……第２の発光ダイオード、ＰＣＴ１
……第１のフオトトランジスタ、ＰＣＴ２……第
２のフオトトランジスタ、Ｅ……直流電源、Ｑ１
……トランジスタ。
1 and 2 show an embodiment of the present invention, FIGS. 1a and 1b are circuit diagrams of a commercial power supply abnormality detection device, FIG. 2 is an explanatory diagram of its operating waveforms, and FIG. FIG. 3 is a circuit diagram showing a conventional commercial power supply abnormality detection device, and FIG. 4 is an explanatory diagram of its operating waveforms. 10...Commercial power supply abnormality detection device, 20...Voltage drop detection circuit, 25...Hysteresis circuit, 30
...Momentary power failure detection circuit, 40...Power failure detection signal generation circuit, A...Commercial power supply, REC...Rectifier, C1...
...Smoothing capacitor, C2...Capacitor, D
1... Diode, ZD1, ZD2... Zener diode, R3... First output end resistance (current limiting resistor), R23... Second output end resistor (current limiting resistor)
, R1, R2, R6...first voltage dividing resistor, R21
, R22...second voltage dividing resistor, R4, R5, R2
4...Resistor, U1...First shunt regulator, U2...Second shunt regulator, PC
1...First photocoupler, PC2...Second photocoupler, PCD1...First light emitting diode, PCD2...Second light emitting diode, PCT1
...First phototransistor, PCT2...Second phototransistor, E...DC power supply, Q1
...transistor.
Claims (1)
と平滑用のコンデンサとによつて所定の時定数を
与え、前記出力端に異常検知の直流信号を発信す
るためのフオトカプラの発光ダイオードを設ける
とともに、該発光ダイオードのカソード側に電圧
の尖頭値が所定の基準電圧以下で非導通となるシ
ヤントレギユレータのカソード側を結合し、前記
シヤントレギユレータのゲート端子に前記基準電
圧を判別する分圧抵抗を配し、前記フオトカプラ
のフオトトランジスタを絶縁された直流電源に結
合して、電圧低下検知回路を構成した商用電源異
常検知装置において、 前記出力端抵抗と並列に第２の出力端抵抗を設
け、該第２の出力端抵抗に電源の異常を知らせる
ための第２のフオトカプラの発光ダイオードを設
け、該第２の発光ダイオードのカソード側に、前
記基準電圧よりも低く定められた第２の基準電圧
より低いときに非導通となる第２のシヤントレギ
ユレータのカソード側を結合し、該第２のシヤン
トレギユレータのゲート端子に、前記第２の基準
電圧と比較される第２の分圧電圧を、前記平滑用
のコンデンサのプラス側の、電源に近い位置に設
けられたダイオードのアノード側から導入すると
ともに、 前記第２の発光ダイオードと前記第２のシヤン
トレギユレータとの間に、該第２のシヤントレギ
ユレータの瞬断にたいして前記第２の発光ダイオ
ードを不感動ならしめるための抵抗とコンデンサ
とを配設して電源の瞬停検知回路を構成し、 前記第１と第２の各発光ダイオードに対応する
フオトカプラの各フオトトランジスタを直列に結
合したことを特徴とする商用電源異常検知装置。[Claims for Utility Model Registration] Full-wave rectification of the input from a commercial power source, giving a predetermined time constant by an output terminal resistor and a smoothing capacitor, and transmitting a DC signal for abnormality detection to the output terminal. A light emitting diode of a photocoupler is provided for the photocoupler, and the cathode side of the light emitting diode is coupled to the cathode side of a shunt regulator which becomes non-conductive when the peak value of the voltage is below a predetermined reference voltage. In the commercial power supply abnormality detection device, a voltage drop detection circuit is configured by disposing a voltage dividing resistor for determining the reference voltage at the gate terminal of the regulator, and coupling the phototransistor of the photocoupler to an insulated DC power supply, wherein the output A second output end resistor is provided in parallel with the end resistor, a light emitting diode of a second photocoupler is provided for notifying the second output end resistor of an abnormality in the power supply, and on the cathode side of the second light emitting diode, A cathode side of a second shunt regulator that becomes non-conductive when the voltage is lower than a second reference voltage determined to be lower than the reference voltage is coupled to the gate terminal of the second shunt regulator. , a second divided voltage to be compared with the second reference voltage is introduced from the anode side of a diode provided on the positive side of the smoothing capacitor at a position close to the power supply, and A resistor and a capacitor are disposed between the light emitting diode and the second shunt regulator to make the second light emitting diode immune to momentary interruption of the second shunt regulator. A commercial power supply abnormality detection device comprising: a power supply instantaneous power failure detection circuit comprising: each phototransistor of a photocoupler corresponding to each of the first and second light emitting diodes coupled in series.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9320088U JPH0214072U (en) | 1988-07-14 | 1988-07-14 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9320088U JPH0214072U (en) | 1988-07-14 | 1988-07-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0214072U true JPH0214072U (en) | 1990-01-29 |
Family
ID=31317648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP9320088U Pending JPH0214072U (en) | 1988-07-14 | 1988-07-14 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0214072U (en) |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5629420A (en) * | 1979-08-17 | 1981-03-24 | Toko Inc | Power failure detecting circuit |
| JPS6338072B2 (en) * | 1985-03-14 | 1988-07-28 | Toyoda Chuo Kenkyusho Kk |
-
1988
- 1988-07-14 JP JP9320088U patent/JPH0214072U/ja active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5629420A (en) * | 1979-08-17 | 1981-03-24 | Toko Inc | Power failure detecting circuit |
| JPS6338072B2 (en) * | 1985-03-14 | 1988-07-28 | Toyoda Chuo Kenkyusho Kk |
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