JPS5526039A - Exciting current controller for electromagnetic attraction mechanism - Google Patents

Exciting current controller for electromagnetic attraction mechanism

Info

Publication number
JPS5526039A
JPS5526039A JP9838878A JP9838878A JPS5526039A JP S5526039 A JPS5526039 A JP S5526039A JP 9838878 A JP9838878 A JP 9838878A JP 9838878 A JP9838878 A JP 9838878A JP S5526039 A JPS5526039 A JP S5526039A
Authority
JP
Japan
Prior art keywords
turn
timer
exciting coil
circuit
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
JP9838878A
Other languages
Japanese (ja)
Inventor
Katsuji Takeya
Shinji Enoshima
Masahiko Akamatsu
Munehiko Mimura
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 JP9838878A priority Critical patent/JPS5526039A/en
Publication of JPS5526039A publication Critical patent/JPS5526039A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To reduce power loss, by providing a semiconductor switch which opens or closes a connection circuit between a power source and the exciting coil of an electromagnetic attraction mechanism and by controlling the turn-on of the semiconductor switch so that the current of the exciting coil is set smaller in attraction than after that.
CONSTITUTION: An electromagnetic brake BR for a motor M is controlled by an excitation controller FC, which comprises a timer circuit TC and a turn-on pulse generation circuit PG and regulates the current of the exciting coil F by controlling the turn-on of a thyristor CR. The timer circuit TC comprises a PUT P1, capacitors C1, C2, a diode D1, resistors R1∼R10 and a transistor Q. When no electricity is supplied from an AC power source Vac, the timer circuit does not act. A timer signal is opened for a time prescribed by the time constant of the capacitor C2 after the starting of energization but is short-circuited after the prescribed time. The turn-on signal for the thyristor is regulated depending on the timer signal.
COPYRIGHT: (C)1980,JPO&Japio
JP9838878A 1978-08-11 1978-08-11 Exciting current controller for electromagnetic attraction mechanism Pending JPS5526039A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9838878A JPS5526039A (en) 1978-08-11 1978-08-11 Exciting current controller for electromagnetic attraction mechanism

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9838878A JPS5526039A (en) 1978-08-11 1978-08-11 Exciting current controller for electromagnetic attraction mechanism

Publications (1)

Publication Number Publication Date
JPS5526039A true JPS5526039A (en) 1980-02-25

Family

ID=14218463

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9838878A Pending JPS5526039A (en) 1978-08-11 1978-08-11 Exciting current controller for electromagnetic attraction mechanism

Country Status (1)

Country Link
JP (1) JPS5526039A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6139875A (en) * 1984-07-30 1986-02-26 Shin Kobe Electric Mach Co Ltd Electromagnetic brake drive circuit
JPH01151096U (en) * 1988-04-12 1989-10-18

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6139875A (en) * 1984-07-30 1986-02-26 Shin Kobe Electric Mach Co Ltd Electromagnetic brake drive circuit
JPH01151096U (en) * 1988-04-12 1989-10-18

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