PCB current transformer figure sources

• /images/research/pcb-current-transformer/pcb-ct-concept-layout.png is the original layout concept embedded in Fulong Li’s design workbook, “ELIPS CT design_by Fulong.xlsx” (embedded as image1.png, 1508 × 436, in the sheets “Current transducer sizing” and “Design CT by keying your wishes”), published unchanged on 29 October 2026.
• /images/research/pcb-current-transformer/ct-equivalent-circuit.svg was drawn for the website on 29 October 2026 in the shared site palette. It follows the current-transformer equivalent circuit of N. Kondrath and M. K. Kazimierczuk, “Bandwidth of current transformers,” IEEE Transactions on Instrumentation and Measurement, vol. 58, no. 6, pp. 2008–2016, 2009, doi:10.1109/TIM.2008.2006134, which the workbook’s design sheet follows.
• /images/research/pcb-current-transformer/pcb-ct-perspective.png and pcb-ct-top.png are Fulong Li’s board renders, unchanged.

The input and result tables on the page are taken from the workbook’s sheet “Design CT by keying your wishes”: magnetising inductance, core-loss resistance, winding resistance, corner frequencies, bandwidth, saturation current (B_sat·A_c / (n·A_L)), minimum trace width (IPC-2221 current–area relation, 10 °C rise) and burden dissipation (I_s²·R).