Title: Reactive coupled drive circuit for magnetic bubble memories

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.

Do you think this is a good invention? Vote now:

Votes so far: For:(0) Against:(0)
Other info:

Inventors: Bobeck, Andrew Henry (Middlesex, NJ, US)
Kish, Donald Eugene (Middlesex, NJ, US)
Kowalchuk, Roman (Somerville, NJ, US)

Application Number: 520611
Filing Date: 1974-11-04
Publication_date: 1976-01-20
Assignee: Bell Telephone Laboratories, Incorporated (Murray Hill, NJ)
Primary Class(es): 365/6
Other Classes:
US Patent Ref:

3763478	Dec, 1973	Yoshizawa et al.	340/174.
3866145	Feb, 1975	Hes, Jr. et al.	340/174.

Other Refs:
Primary Examiner: Moffitt, James W.
Assistant Examiner:
Attorney: Shapiro; H. M.