Patent ID: 11862388
Assignee: COUNTERFOG CORPORATION
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC H  F | IPC F  H

Claim 0:
1. An intrinsically safe electromagnetic device comprising:
a ferromagnetic core including an arm;
first and second safe coils that are each wound about the arm and respectively electrically connected to first and second independent electrical power supplies to form respective first and second intrinsically safe circuits with each of the first and second independent electrical power supplies having a maximal voltage and a short-circuit current under a limit ignition curve corresponding to a total equivalent inductance of the respective first and second safe coils, there existing no electrical connection between the first and second safe coils; and
one or more insulators that electrically insulate the first and second safe coils from the arm and that insulate the first and second safe coils from one another.