Calculation of the primary inductive converter with magnetic core is problematic because of the difficulty in determining the various fluxes inside and outside the magnetic core. Observance of certain requirements for structural and scheme-related decisions makes is possible to substantially simplify theoretical expressions for description of work in such type of converters. The paper... https://www.roneverhart.com/Cookies-X-G-Pen-Roam-Portable-E-Rig-Vaporizer/