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A power supply is a device that supplies electric power to an electrical load. The term is most commonly applied to electric power converters that convert one form of electrical energy to another. A regulated power supply is one that controls the output voltage or current to a specific value; the controlled value is held nearly constant despite variations in either load current or the voltage supplied by the power supply's energy source.

GW Instek has been a byword for quality electronic test & measurement instruments due to its decades of experience in R&D, marketing and manufacturing. GW Instek's reputation has been built upon the philosophy of integrity, quality, and creativity as well as the accumulation of years of experience. Focusing on the improvement of R&D, manufacturing and marketing competitiveness, GW Instek will continue to be one of the most reliable, trusted brands creating the highest value for customers.