JPS54134936A - Magnetic bubble device - Google Patents

Magnetic bubble device

Info

Publication number
JPS54134936A
JPS54134936A JP4213278A JP4213278A JPS54134936A JP S54134936 A JPS54134936 A JP S54134936A JP 4213278 A JP4213278 A JP 4213278A JP 4213278 A JP4213278 A JP 4213278A JP S54134936 A JPS54134936 A JP S54134936A
Authority
JP
Japan
Prior art keywords
value
transistors
zero
waveform
driving coil
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
JP4213278A
Other languages
Japanese (ja)
Other versions
JPS5827907B2 (en
Inventor
Shigeru Yoshizawa
Hirokazu Aoki
Shinsaku Chiba
Koichi Mayama
Takashi Toyooka
Nobuo Saito
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 JP4213278A priority Critical patent/JPS5827907B2/en
Priority to GB7911547A priority patent/GB2019141B/en
Priority to NL7902818A priority patent/NL7902818A/en
Priority to DE19792915138 priority patent/DE2915138C3/en
Publication of JPS54134936A publication Critical patent/JPS54134936A/en
Publication of JPS5827907B2 publication Critical patent/JPS5827907B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G11—INFORMATION STORAGE
    • G11C—STATIC STORES
    • G11C19/00—Digital stores in which the information is moved stepwise, e.g. shift registers
    • G11C19/02—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements
    • G11C19/08—Digital stores in which the information is moved stepwise, e.g. shift registers using magnetic elements using thin films in plane structure
    • G11C19/085—Generating magnetic fields therefor, e.g. uniform magnetic field for magnetic domain stabilisation

Abstract

PURPOSE: To eliminate the level shift of a driving current by controlling an alternating current flowing to a driving coil so that when its waveform crosses the zero- value time axis, the time differentiation value of the waveform will be zero.
CONSTITUTION: Direct-current voltage source 28 is connected across the parallel circuit, composed of the 1st series circuit of transistors 47 and 49 serving as the 1st and 2nd bothway switches and the 2nd series circuit of transistors 48 and 50 as the 3rd and 4th bothway switches, and driving coil 31 is also connected between connection points of transistors 47 and 49, and 48 and 50. Then, ON-OFF operations of transistors 47 to 50 are so controlled that there will be the time region where the time differentiation value of the waveform of an alternating current flowing through driving coil 31 is zero when the current changes from a positive value to a negative value and from a negative value to a positive value in terms of the time axis.
COPYRIGHT: (C)1979,JPO&Japio
JP4213278A 1978-04-12 1978-04-12 Drive circuit for magnetic bubble device Expired JPS5827907B2 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
JP4213278A JPS5827907B2 (en) 1978-04-12 1978-04-12 Drive circuit for magnetic bubble device
GB7911547A GB2019141B (en) 1978-04-12 1979-04-03 Drive circuit for magnetic bubble device
NL7902818A NL7902818A (en) 1978-04-12 1979-04-10 CONTROL CHAIN FOR MAGNETIC BUBBLE DEVICE.
DE19792915138 DE2915138C3 (en) 1978-04-12 1979-04-12 Driver circuit for a magnetic bubble device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4213278A JPS5827907B2 (en) 1978-04-12 1978-04-12 Drive circuit for magnetic bubble device

Publications (2)

Publication Number Publication Date
JPS54134936A true JPS54134936A (en) 1979-10-19
JPS5827907B2 JPS5827907B2 (en) 1983-06-13

Family

ID=12627402

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4213278A Expired JPS5827907B2 (en) 1978-04-12 1978-04-12 Drive circuit for magnetic bubble device

Country Status (4)

Country Link
JP (1) JPS5827907B2 (en)
DE (1) DE2915138C3 (en)
GB (1) GB2019141B (en)
NL (1) NL7902818A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS597153B2 (en) * 1978-09-12 1984-02-16 日本電気株式会社 magnetic bubble drive device
US4513396A (en) * 1983-06-29 1985-04-23 Burroughs Corporation Method of operating a magnetic bubble memory with a drive field that temporarily stops
EP4350966A1 (en) * 2022-10-05 2024-04-10 Infineon Technologies Austria AG Switching converter using partial power processing

Also Published As

Publication number Publication date
NL7902818A (en) 1979-10-16
DE2915138A1 (en) 1979-10-18
JPS5827907B2 (en) 1983-06-13
GB2019141B (en) 1982-03-31
DE2915138B2 (en) 1980-08-14
DE2915138C3 (en) 1981-04-30
GB2019141A (en) 1979-10-24

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