Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Publication of BE454196ApublicationCriticalpatent/BE454196A/xx
H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
H01H9/54—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere
H01H9/56—Circuit arrangements not adapted to a particular application of the switching device and for which no provision exists elsewhere for ensuring operation of the switch at a predetermined point in the AC cycle