Hi, Wondering whether someone with LT Spice experience can be of help. I have the following Schematic: https://unsee.cc/fab8911f/ which results in the following waveforms: https://unsee.cc/c321f970/ The input is a PWM with 50% Duty. If I disconnect the output Inductor, I am able to see the expected PWM waveform with 50% Duty and thus the output voltage. With the inductor connected, the output voltage seems weird. Schematic without Inductor https://unsee.cc/8d2dfa8d/ Waveform without inductor https://unsee.cc/564a9cb2/ Can someone explain, what I am doing wrong ? Thanks, Manu --=20 http://www.piclist.com/techref/piclist PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .