TECH TIPS Schematic of Platise DC-CT sensor The conceptual design of the PFS is based on a magnetic core through which center a wire of which current is to be measured, also named primary current Ip, typically one turn. The secondary compensation winding contains a greater number of turns and is distributed around the majority of the magnetic core. Magnetic material then introduces additional openings to form the PFS, composed of a current-controlled variable reluctance and the Ls winding (D) on the left side of the opening, and flux measuring winding (E) on the right side of the opening. The key difference between the operation of a fluxgate versus PFS is that in a fluxgate sensor, a portion of the core or an entire core is magnetized to reach the minimum and maximum saturation points. DC-CT is also a single core technology where the fluxgate sensor is replaced with the PFS. PFS in turn does not need to cut the core and does not introduce air gap but is embedded into the existing magnetic core, preserving the highest permeability of the core. Much more detail is available in the full Technology Paper available on Dewesoft's website. Simple To Complex Magnets & Assemblies In-Stock Sensor Magnets Next Day Shipping measurement and power analysis, from current clamps to highprecision zero flux current transducers and Rogowsky coils. For more info, see www.dewesoft.com. Custom Magnetic Parts Neodymium * Alnico * Samarium Cobalt * Hard Ferrite (Ceramic) Sintered * Compression Bonded * Injection Molded Prototype * Manufacturing * Warehousing * JIT Delivery Unmatched Customer Service & Support ISO 9001:2015 219.548.3799 In addition to its line of complete data acquisition systems, Dewesoft makes high-accuracy current sensors for AC/DC current www.MagneticsMag.com jeff@allianceorg.com www.allianceorg.com Permanent Magnetic Products May/June 2023 * Magnetics Business & Technology 31http://www.dewesoft.com http://www.allianceorg.com http://www.MagneticsMag.com