Title :
Switching Speed and Dissipation in Fast, Thin-Film Cryotron Circuits
Author :
Meyers, Norman H.
Author_Institution :
Harvard Business School, Boston, Mass. Formerly with International Business Machines Corp., Thomas J. Watson Research Center, Yorktown Heights, N.Y.
Abstract :
As thin-film cryotron circuits become faster, the detailed properties of the components themselves have an increasing effect on over-all circuit operation. When a cryotron switches from the superconducting to the resistive state in a fast circuit, its inductive characteristics can change enough to add appreciable delay and dissipation to its driving circuit. The inductive and resistive transition of the component can be accompanied by diamagnetic hysteresis and by eddy-current-damping effects, which add to dissipation and further delay the switching of the component. These component and circuit effects are complex and interrelated, but considerable insight is gained by analyzing separately various portions of the general behavior.
Keywords :
Current supplies; Delay effects; Hysteresis; Inductance; Power dissipation; Superconducting films; Superconducting thin films; Switches; Switching circuits; Thin film circuits;
Journal_Title :
Proceedings of the IRE
DOI :
10.1109/JRPROC.1962.288263