History of power supply unit : Who created the power supply? The first power supply in a sense, and it was invented by by Otto Blathy , Miska Deri & Karoly Zipernowsky of Austro-Hungarian Empire.
When was the power supply invented? The power supply industry dates back to the early 1920s, when crude devices were first developed to serve as “B” battery eliminators to power radios in both the commercial and consumer markets.
Power supply unit A power supply is an electronic circuit that converts the voltage of an alternating current (AC) into a direct current (DC) voltage. It basically consists of the following elements: transformer, rectifier, filter and regulator circuits .