JPS5527603A - Magnet drive circuit - Google Patents

Magnet drive circuit

Info

Publication number
JPS5527603A
JPS5527603A JP9995078A JP9995078A JPS5527603A JP S5527603 A JPS5527603 A JP S5527603A JP 9995078 A JP9995078 A JP 9995078A JP 9995078 A JP9995078 A JP 9995078A JP S5527603 A JPS5527603 A JP S5527603A
Authority
JP
Japan
Prior art keywords
voltage
input
circuit
impressed
level
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
JP9995078A
Other languages
Japanese (ja)
Inventor
Tadashi Sato
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.)
Fujitsu Ltd
Original Assignee
Fujitsu 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 Fujitsu Ltd filed Critical Fujitsu Ltd
Priority to JP9995078A priority Critical patent/JPS5527603A/en
Publication of JPS5527603A publication Critical patent/JPS5527603A/en
Pending legal-status Critical Current

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Abstract

PURPOSE: To make the flight time approach nearly a constant value in either case, by setting the saturation value of current flowing in an electromagnetic coil low or high according to the magnitude of voltage impressed on the electromagnetic coil.
CONSTITUTION: A power source voltage variation detected by voltage variation detector circuit 21 is impressed on No.1 input of arithmetic circuit 23. A voltage corresponding to a fixed reference current which is to be fed to electromagnetic oil 11 is produced by constant current setting circuit 22. Arithmetic circuit 23 operates so as to set the level of No.2 input according to the level of No.1 input. Thus, the voltage to be given to the base of drive transistor 12 is set low or high.
COPYRIGHT: (C)1980,JPO&Japio
JP9995078A 1978-08-18 1978-08-18 Magnet drive circuit Pending JPS5527603A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9995078A JPS5527603A (en) 1978-08-18 1978-08-18 Magnet drive circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9995078A JPS5527603A (en) 1978-08-18 1978-08-18 Magnet drive circuit

Publications (1)

Publication Number Publication Date
JPS5527603A true JPS5527603A (en) 1980-02-27

Family

ID=14260973

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9995078A Pending JPS5527603A (en) 1978-08-18 1978-08-18 Magnet drive circuit

Country Status (1)

Country Link
JP (1) JPS5527603A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4503480A (en) * 1983-02-17 1985-03-05 Ncr Corporation Voltage compensating driver circuit

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4503480A (en) * 1983-02-17 1985-03-05 Ncr Corporation Voltage compensating driver circuit

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