JPH02219496A - Circuit for detecting termination of variable element - Google Patents

Circuit for detecting termination of variable element

Info

Publication number
JPH02219496A
JPH02219496A JP1041375A JP4137589A JPH02219496A JP H02219496 A JPH02219496 A JP H02219496A JP 1041375 A JP1041375 A JP 1041375A JP 4137589 A JP4137589 A JP 4137589A JP H02219496 A JPH02219496 A JP H02219496A
Authority
JP
Japan
Prior art keywords
motor
variable
rotation
termination
reaches
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
Application number
JP1041375A
Other languages
Japanese (ja)
Inventor
Takashi Yamashita
Original Assignee
Sharp 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 Sharp Corp filed Critical Sharp Corp
Priority to JP1041375A priority Critical patent/JPH02219496A/en
Publication of JPH02219496A publication Critical patent/JPH02219496A/en
Granted legal-status Critical Current

Links

Abstract

PURPOSE: To improve the reliability of automatic regulation of an electronic equipment by stopping the rotation of a motor immediately to prevent the destruction of a variable element, when said variable element reaches the termination of rotation.
CONSTITUTION: A current-voltage conversion is conducted relative to a load current flowing through a motor 1 by a low resistance 10 having no effect on said motor 1 and the obtained voltage is amplified α times by a voltage amplifier 5 to make a small change of said load current larger and to improve responcibility of an apparatus, after a variable element 3 reaches the termination of rotation, and to facilitate detecting said termination. When an input signal is L in an FF 8, an output signal is also L and a relay 4 remains ON. That is, the motor 1 continues rotation. Then, when said input signal is H, i.e., when said variable element 3 reaches the termination of rotation and the load current change signal of said motor 1 exceeds a certain level, the output of said FF 8 is also H and the relay 4 is turned OFF. That is the current path of said motor 1 is cut OFF and the motor 1 stops.
COPYRIGHT: (C)1990,JPO&Japio
JP1041375A 1989-02-20 1989-02-20 Circuit for detecting termination of variable element Granted JPH02219496A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1041375A JPH02219496A (en) 1989-02-20 1989-02-20 Circuit for detecting termination of variable element

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1041375A JPH02219496A (en) 1989-02-20 1989-02-20 Circuit for detecting termination of variable element

Publications (1)

Publication Number Publication Date
JPH02219496A true JPH02219496A (en) 1990-09-03

Family

ID=12606667

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1041375A Granted JPH02219496A (en) 1989-02-20 1989-02-20 Circuit for detecting termination of variable element

Country Status (1)

Country Link
JP (1) JPH02219496A (en)

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59127583A (en) * 1983-01-11 1984-07-23 Aisin Seiki Co Ltd Drive controller of automotive motor-driven facility

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59127583A (en) * 1983-01-11 1984-07-23 Aisin Seiki Co Ltd Drive controller of automotive motor-driven facility

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