> > > But what if I use the inductor to generate very high voltages (e.g. > > to charge a capacitor to 1000V): will any inductor withstand the voltag= e > > that it will be "asked" to generate, or can it breakdown to itself? > > > > If this is possible, are inductors rated for maximum voltage? Because > > the ones that I saw weren't, however for some extreme boost application= s > > it may be needed. > When high voltages are involved voltage breakdown does become relevant. Regulatory and safety and functional issues apply. This can involve - primary to secondary Safety isolation or general breakdown - through wire insulation to xxx Wire to core, frame, component. finger, - layer to layer Voltage differential appears from side to side across a layer. If layers are wound alternately right to left then left to right then ... you get 2 x Vlayer at each and to the layers above and below the current one. This can be very significant. When voltage becomes more than a minor issue of good practice there is a large body of experience and practice available. Wire insulations, interlayer insulating materials, potting materials, coil-formers (some with separate "windows" for interwinding isolation, and with at least one winding area to provide wire to core or frame isolation), ... A whole new area to learn about :-). Russell --=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 .