A simple square wave follows a pattern similar to that of a sine wave, a series of alternating high and low voltages. The difference is that a sine wave’s magnitude changes continuously, whereas a square wave’s magnitude switches instantaneously between its maximum voltage and zero volts. A square wave is useful for many welding applications.
From the Web: Retraining in Atlantic City; Ford fast tracks aluminum truck; U.S. mfg losing ground - by Vicki Bell Highlights for fabricators from the past week’s Web articles—Atlantic City casino workers to retrain for fab jobs; aluminum body truck production picks up speed; U.S. factories keep losing ground; materials providers focus on 3-D printing; and young entrepreneur stresses leadership.
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