Demagnetizing Coil - Circuit design | Eng-Tips
2002年2月4日 · Plugging in a coil salvaged from a monitor without this posistor in series is going to result in a very hot coil in a very short time. However, if you do use the posistor, the amount …
Degausing/Demagnetizer Coil Driver Design - Eng-Tips
2003年8月24日 · However Due to the Inductance of the coil an AC power line frequency I cannot get a high enoungh AC current in the coil to reach sufficent magnetic field strength required. …
why the high speed steel (M2/M42) can attract steel lile a ... - Eng …
2007年2月1日 · A whole bunch of small machined parts can be run through the demagnetizing coil on a belt, but each little part is almost certain to be at a different position and orientation. …
demagnetizing and remagentizing a servo motor - Eng-Tips
2004年8月27日 · Particularly for rare-earth magnet types that you might find in a modern brushless-dc motor (samarium-cobalt or neodymium-iron-boron) and to a lesser extent ferrite …
Demagnetizing Unit - Electric power & transmission & distribution
2010年2月4日 · OK, that dependes on how you define 'single phase'. Assuming again ('scuse me Jeff) that it is a device with two terminals that are connected to two phases and run from 480+ …
choking off magnetic permanent magnetic 'pull' with …
2009年6月3日 · Think of (loosely) a guitar pickup...permanent magnet on the bottom, a coil with a steel core. This results in a 'throw' (for want of a better word) of magnetic field from the top of …
High Powered Demagnetizer - Electrical Engineering general
2007年6月23日 · If there's just a coil, it would probably work better at 240V. At least it might work better until it got so hot that it melted itself down. Many of them have a PTC in series to limit …
Need To Demagnetize Production Machine - Eng-Tips
2002年10月28日 · demag is a rough thing for one useing non magnetic mounts, bushings, and housings will reduce the effect of the motors magnets on the frame of you equipment. …
Pemanent Magnets - a bit confused about BH curves 4 - Eng-Tips
2005年3月27日 · The trick to use a permanent magnet as though it is a magneto motive force similar to an iron inside the coil amper-turns is to put the axes in the Hc point. Thereby moving …
Why do rotating shafts need demagnetizing? 1 - Eng-Tips
2009年8月15日 · Rotating shafts need demagnetizing because they have become magnetized and the user has decided that this is detrimental. How/why do they become magnetized? It is …