JPS5671874A - Drive system for magnetic bubble memory coil - Google Patents
Drive system for magnetic bubble memory coilInfo
- 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
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
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)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0491394U (en) * | 1990-12-27 | 1992-08-10 |
-
1979
- 1979-11-14 JP JP14746179A patent/JPS5671874A/en active Pending
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0491394U (en) * | 1990-12-27 | 1992-08-10 |
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