JPS63109665U - - Google Patents
Info
- Publication number
- JPS63109665U JPS63109665U JP182687U JP182687U JPS63109665U JP S63109665 U JPS63109665 U JP S63109665U JP 182687 U JP182687 U JP 182687U JP 182687 U JP182687 U JP 182687U JP S63109665 U JPS63109665 U JP S63109665U
- Authority
- JP
- Japan
- Prior art keywords
- circuit
- resistors
- resistor
- phase
- star
- 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
- 238000001514 detection method Methods 0.000 claims description 4
- 239000003990 capacitor Substances 0.000 claims 1
- 230000007935 neutral effect Effects 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 2
Landscapes
- Emergency Protection Circuit Devices (AREA)
- Measurement Of Current Or Voltage (AREA)
Description
図は本考案に係る反相検出回路の１実施例を示
すもので、第１図は反相検出回路図、第２図は正
相時、反相時の検出波形図である。
Ｒ，Ｓ，Ｔは３相電源、Ｒ１〜Ｒ７は抵抗、Ｄ
１〜Ｄ３はダイオード、ＰＣはフオトカプラ、Ｐ
１は発光素子である。
The figures show one embodiment of the anti-phase detection circuit according to the present invention. FIG. 1 is a diagram of the anti-phase detection circuit, and FIG. 2 is a detection waveform diagram during positive phase and anti-phase. R, S, T are three-phase power supplies, R1 to R7 are resistors, D
1 to D3 are diodes, PC is a photocoupler, P
1 is a light emitting element.
Claims (1)
抗Ｒ２とコンデンサＣ１，抵抗Ｒ４の直列回路と
で構成するスター回路を接続すると共に、抵抗Ｒ
３，Ｒ４の直列回路と抵抗Ｒ６，Ｒ７の直列回路
とでダイオードＤ１，Ｄ２を介してブリツジ回路
を形成し、抵抗Ｒ３，Ｒ４の接続中性点と抵抗Ｒ
６，Ｒ７の接続点間にフオトカプラＰＣの発光素
子Ｐ１を接続した反相検出回路。 A star circuit consisting of a series circuit of resistors R 1 and R 3 and a series circuit of resistor R 2 , capacitor C 1 and resistor R 4 is connected to the AC three-phase circuit, and a star circuit is connected to the AC three-phase circuit.
3 , R4 and the series circuit of resistors R6 , R7 form a bridge circuit via diodes D1 , D2 , and the connection neutral point of resistors R3 , R4 and the resistor R
6 , an anti-phase detection circuit in which a light emitting element P1 of a photocoupler PC is connected between the connection points of R7 .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP182687U JPH0431589Y2 (en) | 1987-01-09 | 1987-01-09 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP182687U JPH0431589Y2 (en) | 1987-01-09 | 1987-01-09 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS63109665U true JPS63109665U (en) | 1988-07-14 |
| JPH0431589Y2 JPH0431589Y2 (en) | 1992-07-29 |
Family
ID=30780092
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP182687U Expired JPH0431589Y2 (en) | 1987-01-09 | 1987-01-09 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0431589Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007017187A (en) * | 2005-07-05 | 2007-01-25 | Hitachi Industrial Equipment Systems Co Ltd | Phase interruption detection circuit |
-
1987
- 1987-01-09 JP JP182687U patent/JPH0431589Y2/ja not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007017187A (en) * | 2005-07-05 | 2007-01-25 | Hitachi Industrial Equipment Systems Co Ltd | Phase interruption detection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0431589Y2 (en) | 1992-07-29 |
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