JPS57716A - Controller of sewing machine - Google Patents

Controller of sewing machine

Info

Publication number
JPS57716A
JPS57716A JP7505980A JP7505980A JPS57716A JP S57716 A JPS57716 A JP S57716A JP 7505980 A JP7505980 A JP 7505980A JP 7505980 A JP7505980 A JP 7505980A JP S57716 A JPS57716 A JP S57716A
Authority
JP
Japan
Prior art keywords
turned
electromagnet
pulse
period
switch
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
JP7505980A
Other languages
Japanese (ja)
Inventor
Kensaku Kobayashi
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.)
Aisin Corp
Original Assignee
Aisin Seiki Co 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 Aisin Seiki Co Ltd filed Critical Aisin Seiki Co Ltd
Priority to JP7505980A priority Critical patent/JPS57716A/en
Publication of JPS57716A publication Critical patent/JPS57716A/en
Pending legal-status Critical Current

Links

Landscapes

  • Control Of Position Or Direction (AREA)
  • Sewing Machines And Sewing (AREA)

Abstract

PURPOSE: To simplify a control circuit by eliminating the need for a timer which controls initial energizing by making the 1st pulse in the start of oscillation longer than the following switch pulse and by energizing an electromagnet with the 1st pulse.
CONSTITUTION: An oscillator which turns on a transistor TR11 consists of a reference voltage circuit composed of a comparator 10 and resistances R1WR3, and a CR integral network composed of a resistance R4 and a capacitor C1. While the set leg of the oscillator is lowered, a switch S3 is turned on; in a period Δt8 right after that, the TR11 is turned on to energize an electromagnet M.K and in the following period Δt9, the TR11 is turned off. In a period Δt10, the TR11 is turned on repeatedly to energize the electromagnet M.K intermittently, holding the set leg at an elevation position. Then, when the switch S3 is turned off, a gate 12 is set to logic 0 and the output of a comparator is held at 0V to turn off the TR11, demagnetizing the electromagnet M.K. Thus, the need for a timer for cntrol over initial energizing is eliminated.
COPYRIGHT: (C)1982,JPO&Japio
JP7505980A 1980-06-04 1980-06-04 Controller of sewing machine Pending JPS57716A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7505980A JPS57716A (en) 1980-06-04 1980-06-04 Controller of sewing machine

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7505980A JPS57716A (en) 1980-06-04 1980-06-04 Controller of sewing machine

Publications (1)

Publication Number Publication Date
JPS57716A true JPS57716A (en) 1982-01-05

Family

ID=13565247

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7505980A Pending JPS57716A (en) 1980-06-04 1980-06-04 Controller of sewing machine

Country Status (1)

Country Link
JP (1) JPS57716A (en)

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