JPS552936A - Phase rotation detector - Google Patents
Phase rotation detectorInfo
- Publication number
- JPS552936A JPS552936A JP7573478A JP7573478A JPS552936A JP S552936 A JPS552936 A JP S552936A JP 7573478 A JP7573478 A JP 7573478A JP 7573478 A JP7573478 A JP 7573478A JP S552936 A JPS552936 A JP S552936A
- Authority
- JP
- Japan
- Prior art keywords
- voltage
- rectangular wave
- wave voltage
- power supply
- differential signal
- 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
Abstract
PURPOSE: For preventing the dispersion of parts in characteristic and the influence of the frequency for example of three phase power supply, to generate ignition signal for a phase control type rectifier device almost in synchronization with the zero point of the voltage between given terminals for three-phase power supply.
CONSTITUTION: Rectangular wave voltage is generated by a Zener diode 7 during the semi-cycle while the voltage of a terminal 1b becomes positive with respect to a terminal 1C. the differential signal of said rectangular wave voltage appears at the both ends of a resistor 13. The differential signal generated on the rise of said rectangular wave voltage has positive polarity with respect to the gate of an SCR 5. In the meanwhile, the negative differential signal generated on the fall of said rectangular wave voltage is shorted by a diode 15. The ignition signal generating means 100 made of said Zener diode 7, a condenser 14 and a resistor 13 ignites an SCR 5 almost in synchronization with the zero point of power supply voltage V1b-1c.
COPYRIGHT: (C)1980,JPO&Japio
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7573478A JPS552936A (en) | 1978-06-21 | 1978-06-21 | Phase rotation detector |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP7573478A JPS552936A (en) | 1978-06-21 | 1978-06-21 | Phase rotation detector |
Publications (1)
Publication Number | Publication Date |
---|---|
JPS552936A true JPS552936A (en) | 1980-01-10 |
Family
ID=13584790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP7573478A Pending JPS552936A (en) | 1978-06-21 | 1978-06-21 | Phase rotation detector |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPS552936A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5892965A (en) * | 1981-11-30 | 1983-06-02 | Matsushita Electric Ind Co Ltd | Three phase phase rotation detector |
-
1978
- 1978-06-21 JP JP7573478A patent/JPS552936A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5892965A (en) * | 1981-11-30 | 1983-06-02 | Matsushita Electric Ind Co Ltd | Three phase phase rotation detector |
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