1973 Volume 8 Issue 4 Pages 162-166
A survey of researches on persistent current switches for superconducting magnets is presented.
Basic principles and methods of persistent current switches are given. General characteristics and some problems of thermal type and mechanical type persistent current switches are described including off-state resistance, on-state resistance, stability of switch-superconductor, responce time and consumption of liquid He. Some examples of these switches are given.