JPH0181579U - - Google Patents
Info
- Publication number
- JPH0181579U JPH0181579U JP1987176401U JP17640187U JPH0181579U JP H0181579 U JPH0181579 U JP H0181579U JP 1987176401 U JP1987176401 U JP 1987176401U JP 17640187 U JP17640187 U JP 17640187U JP H0181579 U JPH0181579 U JP H0181579U
- Authority
- JP
- Japan
- Prior art keywords
- light emitting
- photocoupler
- detection device
- power failure
- failure 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
Landscapes
- Rectifiers (AREA)
- Measurement Of Current Or Voltage (AREA)
- Emergency Protection Circuit Devices (AREA)
Description
第１図は本考案の一実施例を示す図、第２図は
本考案の他の実施例を示す図、第３図は本考案の
さらに他の実施例を示す図、第４図は従来用いら
れてきた全波整流回路用停電検出回路の一例であ
り、第５図は第４図の回路構成を倍電圧整流回路
に適用した場合の無効性を説明するための図であ
る。
図中、ＰＣ１，ＰＣ２はホトカプラ、ＰＣ３は
交流入力用のホトカプラ。
FIG. 1 is a diagram showing one embodiment of the present invention, FIG. 2 is a diagram showing another embodiment of the present invention, FIG. 3 is a diagram showing still another embodiment of the present invention, and FIG. 4 is a diagram showing a conventional example. This is an example of a power failure detection circuit for a full-wave rectifier circuit that has been used, and FIG. 5 is a diagram for explaining the ineffectiveness when the circuit configuration of FIG. 4 is applied to a voltage doubler rectifier circuit. In the figure, PC1 and PC2 are photocouplers, and PC3 is a photocoupler for AC input.
Claims (1)
において、交流入力端子間に、コンデンサと少な
くとも一つのホトカプラ用の発光素子を含む発光
部との直列回路を接続し、停電検出回路の入力側
に前記発光素子からの光を受光する少なくとも１
つのホトカプラ用の受光素子を含む受光部を直列
に接続したことを特徴とする停電検出装置。 ２ 前記発光部が互いに逆向きに並列接続した２
つのホトカプラ用の発光素子から成り、前記受光
部は前記２つの発光素子に対応する２つのホトカ
プラ用の受光素子から成ることを特徴とする実用
新案登録請求の範囲第１項記載の停電検出装置。 ３ 前記発光部及び受光部として、交流用ホトカ
プラを用いることを特徴とする実用新案登録請求
の範囲第１項記載の停電検出装置。 ４ 前記発光部として一つのホトカプラ用の発光
素子と該発光素子と逆向きに並列接続したダイオ
ードとで構成したことを特徴とする実用新案登録
請求の範囲第１項記載の停電検出装置。[Claims for Utility Model Registration] In a power failure detection device for a device having a voltage rectifier circuit, a series circuit including a capacitor and a light emitting part including at least one light emitting element for a photocoupler is connected between AC input terminals, At least one receiving light from the light emitting element on the input side of the power failure detection circuit.
A power outage detection device characterized in that a light receiving section including two photocoupler light receiving elements is connected in series. 2 The light emitting parts are connected in parallel in opposite directions.
2. The power failure detection device according to claim 1, wherein the power failure detection device is comprised of two photocoupler light emitting elements, and the light receiving section is comprised of two photocoupler light receiving elements corresponding to the two light emitting elements. 3. The power outage detection device according to claim 1, which is a registered utility model, characterized in that an AC photocoupler is used as the light emitting section and the light receiving section. 4. The power failure detection device according to claim 1, wherein the light emitting section is composed of one photocoupler light emitting element and a diode connected in parallel in the opposite direction to the light emitting element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176401U JPH0181579U (en) | 1987-11-20 | 1987-11-20 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP1987176401U JPH0181579U (en) | 1987-11-20 | 1987-11-20 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0181579U true JPH0181579U (en) | 1989-05-31 |
Family
ID=33446905
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP1987176401U Pending JPH0181579U (en) | 1987-11-20 | 1987-11-20 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0181579U (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5223641A (en) * | 1975-08-15 | 1977-02-22 | Westinghouse Electric Corp | Unobtainable phase detection dircuit used in three phase power source |
| JPS5999360A (en) * | 1982-11-30 | 1984-06-08 | Ando Electric Co Ltd | Power source disconnection detecting circuit with photocoupler |
| JPS6238368A (en) * | 1985-08-13 | 1987-02-19 | Mitsubishi Electric Corp | Voltage drop detector |
-
1987
- 1987-11-20 JP JP1987176401U patent/JPH0181579U/ja active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5223641A (en) * | 1975-08-15 | 1977-02-22 | Westinghouse Electric Corp | Unobtainable phase detection dircuit used in three phase power source |
| JPS5999360A (en) * | 1982-11-30 | 1984-06-08 | Ando Electric Co Ltd | Power source disconnection detecting circuit with photocoupler |
| JPS6238368A (en) * | 1985-08-13 | 1987-02-19 | Mitsubishi Electric Corp | Voltage drop detector |
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