Development of power supply system has brought a new type of power supply idea which is known as SMPS power supply. The ordinary regulator based power supply system was discussed in other page on the blog now this page is only for SMPS system. The main reason behind it was to minimize the transformer weight and space needed in a ordinary power supply. Ordinary power supply system also have much loss then SMPS design. As transformer are lower sized so cost of the transformer is less so system has lower cost. Moreover compact design of the power supply replacing ordinary power supply. The ordinary system regulate the voltage by resistive drop and current feedback used to maintain the required voltage. This resistive drop cause loss of power and loss of power also cause heat which should be dissipated.
SMPS system maintain the target voltage by chopping the input with a desired interval which is maintained by feedback system. The width of the chopping is maintained so the output voltage is constant.
The desktop computer uses the SMPS power supply and many people use the power supply for their lab purpose.
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