Circuit Controlling Apparatus

Author:  Bainbridge, K. T.
Source:  US Patent 1,747,044
Doc ID:  1930000
Year of Publication:  1930
Abstract:  
This invention relates to improvements in circuit controlling apparatus and more particularly to the control of electric circuits on the occurrence of predetermined conditions either substantially instantaneously or in a time which is a function of an electric quantity of the circuit. An object of my invention is to provide improved circuit controlling apparatus whose operation is practically unaffected by wave form, frequency and temperature and which imposes a small burden on the circuit and has relatively few moving parts.