Patent · US Expired

Reactive coupled drive circuit for magnetic bubble memories

US3934235A · kind A · utility

0Cited by

2References

7Claims

0Family size

Assignee

Bell Telephone Laboratories, Inc. · US

Inventors

Andrew H. Bobeck · Chatham, US
Donald Eugene Kish · Middlesex, US
Roman Kowalchuk · Somerville, US

Key dates

Filing date	Nov 4, 1974
Grant date	Jan 20, 1976
Priority date	—
Expiry date	Nov 4, 1994

Classification

Technology area (CPC G)Physics
CPC primaryG11C19/085
WIPO fieldComputer technology
WIPO sectorElectrical engineering

Abstract

The two drive coils commonly used for moving magnetic bubbles in a bubble memory are driven by a pair of reactive-coupled tuned circuits. The tuned circuits are designed to maintain the proper phase relationship between currents in the circuits and to provide periodic refresh pulses once operation is initiated.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.