> You don't. =A0You look it up in the inductor's datasheet. > I know but with my setup, which I described a minute ago will (practically) push any non air core inductor way past saturation. > Calculating saturation current is only done by little elves in a hollow t= ree > and requires a regular supply of dead fish. > > Actually there are ways if you're not a elf, but it gets complicated. > Roughly you get the spec for the core material and find the magnetic flux > your particular core made from that material can take. =A0Then you determ= ine > the loop current required to generate that flux, then divide that by the > number of turns to get the current thru the wire. > So now that I can calculate the saturation point, what happens to inductance? I know it doesn't drop to zero but from what I've measured it drops off exponentially with rising current. I know I'm off into elf zone with this, but I know it can be solved with a mixture of work done by Ampere and Maxwell and perhaps others. -- = http://www.piclist.com PIC/SX FAQ & list archive View/change your membership options at http://mailman.mit.edu/mailman/listinfo/piclist