Very nice Document Jumboot! The section about the Magnetizer brings back memories. In our Calibration Laboratory at Naval Ship Repair Facility, Yokosuka, Japan in the sixties we had a Magnetizer which used precisely the same principles. It was used primarily to re-magnetize the small horseshoe magnets in electrical meters when they had lost some of their magnetism. It consisted of a High Voltage Power Supply, a Capacitor Bank and a Hydrogen Thyratron to discharge the Capacitor Bank through a Magnetizing Coil. The Magnetizing Coil most often used was just a Silver Bar which attached to the external High Current Discharge Terminals of the device. A Magnet needing re-magnetization was placed in proper position around the Silver Bar and when the Energizing Button was pushed a brief electrical current of several Hundreds or Thousands of Amperes created the Intense Magnetic Field to restore the Permanent Magnet to full strength. Repeated as necessary. Nowadays we can easily construct such devices ourselves with High Powered Silicon Controlled Rectifiers and a suitably devised Power Supply. A novel use of the Magnetizers to show their power is to collapse an Aluminum Soda Can with the Electromagnetic Pulse it is able to produce.
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