JPS552936A - Phase rotation detector - Google Patents

Phase rotation detector

Info

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
Application number
JP7573478A
Other languages
Japanese (ja)
Inventor
Makoto Oota
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Electric Corp
Original Assignee
Mitsubishi Electric Corp
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Electric Corp filed Critical Mitsubishi Electric Corp
Priority to JP7573478A priority Critical patent/JPS552936A/en
Publication of JPS552936A publication Critical patent/JPS552936A/en
Pending legal-status Critical Current

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
JP7573478A 1978-06-21 1978-06-21 Phase rotation detector Pending JPS552936A (en)

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)

* Cited by examiner, † Cited by third party
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

Cited By (1)

* Cited by examiner, † Cited by third party
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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