JPS6464573A - Controller for motor - Google Patents

Controller for motor

Info

Publication number
JPS6464573A
JPS6464573A JP22020887A JP22020887A JPS6464573A JP S6464573 A JPS6464573 A JP S6464573A JP 22020887 A JP22020887 A JP 22020887A JP 22020887 A JP22020887 A JP 22020887A JP S6464573 A JPS6464573 A JP S6464573A
Authority
JP
Japan
Prior art keywords
transistor
power source
motor
control circuit
speed control
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
JP22020887A
Other languages
Japanese (ja)
Inventor
Kazuaki Takada
Yoshio Kusano
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP22020887A priority Critical patent/JPS6464573A/en
Publication of JPS6464573A publication Critical patent/JPS6464573A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE:To operate a controller for a motor safely and facilitate the maintenance of the same, by a method wherein the lowering of a voltage after intercepting an AC input power source is detected by a Zener diode while a transistor is driven by the detected value. CONSTITUTION:An inverter control circuit is constituted of a power source transistor T1, a diode bridge DB1, a voltage stabilizing circuit AVR, a speed control circuit 1 for a motor M, a logic power source PV and the like. The speed control as well as the starting and stopping operations of the motor M are effected through transistors(Tr) Q2-Q7, diodes D7-D12 and the speed control circuit 1 while a regenerative power is absorbed by a regenerative power absorbing resistor R4. Upon intercepting an AC input power source, the transistor Q10 is put ON through resistors R15, R16 while the transistor Q1 is put ON through the transistor Q11 and the like. According to these operations, the electric charge of a power source smoothing capacitor C1 is conducted through the regenerative power absorbing resistor R4 whereby a smoothing voltage VDC may be reduced quickly.
JP22020887A 1987-09-04 1987-09-04 Controller for motor Pending JPS6464573A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP22020887A JPS6464573A (en) 1987-09-04 1987-09-04 Controller for motor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP22020887A JPS6464573A (en) 1987-09-04 1987-09-04 Controller for motor

Publications (1)

Publication Number Publication Date
JPS6464573A true JPS6464573A (en) 1989-03-10

Family

ID=16747580

Family Applications (1)

Application Number Title Priority Date Filing Date
JP22020887A Pending JPS6464573A (en) 1987-09-04 1987-09-04 Controller for motor

Country Status (1)

Country Link
JP (1) JPS6464573A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6565122B1 (en) * 2002-04-30 2003-05-20 Hansen Reginald G Retractable mud flap assembly

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6565122B1 (en) * 2002-04-30 2003-05-20 Hansen Reginald G Retractable mud flap assembly

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