How To Build A Magneto Magnetizer Pdf Writer
Today we will be talking about ways to use electricity to make certain special materials, called permanent magnet. Cycle magnetizer connects the load fixture directly across the power line, turning on as the AC line voltage. Your writer has examined many of them, as they are often in extreme need of repair, and no. How To Build A Magneto Magnetizer Pdf File. 5/30/2017 0 Comments You'll never get a Job if you don't have a Good Answer to this frequently asked job interview question! Select the right answer to determine if you are prepared for a. Back to Commercial Stabilized HeNe Lasers Sub-Table of Contents. Coherent/Tropel Stabilized HeNe Lasers.
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$begingroup$I have several small DC motors where if I place an extra magnet to back-up the included magnet, the performance seems to improve significantly.
These motors are 30-40 years old & their performance is degraded. I've been told that it's possible to restore their performance by re-magnetizing the magnets.
How can this be done?
Anindo Ghosh1 Answer
$begingroup$I am not an expert here, only having done this once or twice a long time ago, but the 'usual' method is to send a very short pulse of high current (e.g. >10A, <1us) through the winding, in order to saturate the magnet completely.
All you need is a large capacitor bank and a switch (plus a frame/shield to hold in in place in case anything decides it wishes to depart in a rapid fashion from the motor) You can work out the voltage needed to charge to by measuring the resistance of the windings (roughly, as it will be a fast rising pulse as opposed to DC you are sending through, but it will give you some idea)
I had a quick Google and found this page which discusses the method. I suggest you try it out on and old motor or magnet first, as it is likely to be a rather empirically judged process. This document looks interesting and useful also.
Oli GlaserOli Glaser