JPS55103684A - Driving unit of electromagnet - Google Patents

Driving unit of electromagnet

Info

Publication number
JPS55103684A
JPS55103684A JP1105579A JP1105579A JPS55103684A JP S55103684 A JPS55103684 A JP S55103684A JP 1105579 A JP1105579 A JP 1105579A JP 1105579 A JP1105579 A JP 1105579A JP S55103684 A JPS55103684 A JP S55103684A
Authority
JP
Japan
Prior art keywords
output
current
coil
flowed
pulse
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
JP1105579A
Other languages
Japanese (ja)
Inventor
Yoshio Miyama
Yoshiaki Ikeda
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.)
Seikosha KK
Original Assignee
Seikosha KK
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 Seikosha KK filed Critical Seikosha KK
Priority to JP1105579A priority Critical patent/JPS55103684A/en
Publication of JPS55103684A publication Critical patent/JPS55103684A/en
Pending legal-status Critical Current

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  • Impact Printers (AREA)

Abstract

PURPOSE: To reduce power consumption of a print wire driving solenoid and improve a power effeciency by controlling one of the width and the period, at least, of the pulse train, which is obtained by pulse-modulating a drive control signal, according to fluctuation of the power source voltage.
CONSTITUTION: When drive control signal A is applied to terminal P1, one-shot multivibrator W1 is driven to output output C. Meanwhile, one-shot multivibrator W2 outputs output B by applying clock pulse CL. Then, D is obtained as the output of gate G2, and output E is generated from gate G3. Then, Tr1 and Tr2 are activated to flow a current to coil L, however, no excessive current is flowed because the latter part of the current is made into pulses. Next, Tr3 and Tr2 are activated by applying signal P2 similarly to the case of P1, and an opposite-polarity current is flowed to coil L. Then, the pulse width of one-shot multivibrator W2 is adjusted by the detection signal for fluctuation of the power source voltage dependent upon voltage fluctuation detection circuit A, so that the quantity of the current flowed to coil L may be always fixed.
COPYRIGHT: (C)1980,JPO&Japio
JP1105579A 1979-02-01 1979-02-01 Driving unit of electromagnet Pending JPS55103684A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1105579A JPS55103684A (en) 1979-02-01 1979-02-01 Driving unit of electromagnet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1105579A JPS55103684A (en) 1979-02-01 1979-02-01 Driving unit of electromagnet

Publications (1)

Publication Number Publication Date
JPS55103684A true JPS55103684A (en) 1980-08-08

Family

ID=11767324

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1105579A Pending JPS55103684A (en) 1979-02-01 1979-02-01 Driving unit of electromagnet

Country Status (1)

Country Link
JP (1) JPS55103684A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57152108A (en) * 1981-03-16 1982-09-20 Mitsubishi Electric Corp Controlling device for electromagnetic driving device
JPS62252914A (en) * 1986-04-25 1987-11-04 Toshiba Corp Solenoid driving circuit
JPS6362305A (en) * 1986-09-03 1988-03-18 Hitachi Ltd Coil exciting circuit
JPS6441105U (en) * 1988-09-07 1989-03-13

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57152108A (en) * 1981-03-16 1982-09-20 Mitsubishi Electric Corp Controlling device for electromagnetic driving device
JPS62252914A (en) * 1986-04-25 1987-11-04 Toshiba Corp Solenoid driving circuit
JPS6362305A (en) * 1986-09-03 1988-03-18 Hitachi Ltd Coil exciting circuit
JPS6441105U (en) * 1988-09-07 1989-03-13

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