JPS5671874A - Drive system for magnetic bubble memory coil - Google Patents

Drive system for magnetic bubble memory coil

Info

Publication number
JPS5671874A
JPS5671874A JP14746179A JP14746179A JPS5671874A JP S5671874 A JPS5671874 A JP S5671874A JP 14746179 A JP14746179 A JP 14746179A JP 14746179 A JP14746179 A JP 14746179A JP S5671874 A JPS5671874 A JP S5671874A
Authority
JP
Japan
Prior art keywords
drive
coil
magnetic field
magnetic bubble
trs
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
JP14746179A
Other languages
Japanese (ja)
Inventor
Suketsugu Yamaguchi
Masaaki Okada
Akio Kimura
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 JP14746179A priority Critical patent/JPS5671874A/en
Publication of JPS5671874A publication Critical patent/JPS5671874A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To drive the coil of magnetic bubble memory stably with a simple constitution, by providing a period when the rotating magnetic field generating coils which control a drive voltage and are alternately operated and the two switching circuits in series with them are both OFF.
CONSTITUTION: An FF2 which is controlled via FF1 fed with the reference clock produces the drive pulse, the output of which is inverted in response to the clock, and the drive coil for X direction rotating magnetic field production Lx and the two switching transistors TRs 3, 4 in series connection are controlled so that they are alternately ON to drive the coil Lx. The output of FF2 is processed for the logical product with the delay output via delay circuit DL and AND gates 4, 5. Thus, a period when the transistors TRs 3, 4 are both OFF, is provided, thereby preventing the simultaneous ON-state of the transistors TRs 3, 4 which alternately operate, even with dispersion in the characteristics. Accordingly, the production of defect for TRs 3 and 4 due to a large current is avoided, allowing to drive the rotating magnetic field generating coils for magnetic bubble memories stably with a simple constitution.
COPYRIGHT: (C)1981,JPO&Japio
JP14746179A 1979-11-14 1979-11-14 Drive system for magnetic bubble memory coil Pending JPS5671874A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14746179A JPS5671874A (en) 1979-11-14 1979-11-14 Drive system for magnetic bubble memory coil

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14746179A JPS5671874A (en) 1979-11-14 1979-11-14 Drive system for magnetic bubble memory coil

Publications (1)

Publication Number Publication Date
JPS5671874A true JPS5671874A (en) 1981-06-15

Family

ID=15430885

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14746179A Pending JPS5671874A (en) 1979-11-14 1979-11-14 Drive system for magnetic bubble memory coil

Country Status (1)

Country Link
JP (1) JPS5671874A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0491394U (en) * 1990-12-27 1992-08-10

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0491394U (en) * 1990-12-27 1992-08-10

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