salah_edu
Junior Member level 1
Hi All,
i want to build 5kw welder inverter , so i want to choose a ferrite core for my transformer , the core is a toroid with T63 mm out diameter and 38mm in diameter and 25mm thick and without a gap (MnZn PC40 material), i want to use it in two swich forward converter topology, so is it ok to use this core in this topology wothout a gap , or it must contain a gap ?
Thank you
i want to build 5kw welder inverter , so i want to choose a ferrite core for my transformer , the core is a toroid with T63 mm out diameter and 38mm in diameter and 25mm thick and without a gap (MnZn PC40 material), i want to use it in two swich forward converter topology, so is it ok to use this core in this topology wothout a gap , or it must contain a gap ?
![Balun-perles-de-ferrite-fil-de-fil-filtre-EMI-anneau-de-ferrite-starter-RF-1ea-lot.jpg_Q90.jpg_.webp](https://ae01.alicdn.com/kf/Ha45d72e2a5144e5faf1884ed4168a47bi/Balun-perles-de-ferrite-fil-de-fil-filtre-EMI-anneau-de-ferrite-starter-RF-1ea-lot.jpg_Q90.jpg_.webp)
![1396624687_Figure%201a.jpg](https://www.powersystemsdesign.com/images/articles/1396624687_Figure%201a.jpg)
Thank you