A while ago I remember seeing an online calculator that allowed you to roughly calculate inductance by measuring a high frequency signals voltage loss when though an inductor. First of all has anyone seen such a tool ? (and could you possibly point me to one) Or could someone point me to some (simplified) equations that would allow me to calculate inductance with an oscilloscope and a function generator. Thanks --=20 Jason White - Python / C++ Programmer and Electronics Hobbyist --=20 http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist .