The transformer core significantly impacts current attenuation through several key mechanisms. Firstly, it enhances inductance, which opposes current changes via induced EMF according to Faraday's law. Secondly, the core's high magnetic permeability concentrates magnetic flux, increasing magnetic energy storage and counteracting current variations more effectively. Additionally, hysteresis and eddy current losses in the core convert electrical energy into heat, reducing available energy for current flow. At high frequencies, skin and proximity effects increase AC resistance, leading to further power losses and current attenuation. Lastly, the dynamic equilibrium of energy conversion between electrical and magnetic energy in the core prevents instantaneous current changes, causing gradual attenuation to a new steady state. These combined effects are crucial for controlling current waveforms and mitigating adverse impacts in switch-mode power supplies and transformer designs. Read More »