what is a SMPS

hey switch mode power supply this is device which provides power to ur comp its main device as it is main power supplier of ur comp!

SMPS stands for Switch Mode Power Supply. It is the device which provides necessary DC voltage to your motherboard, CPU Fan, Hard disk etc. I hope this is clear to you now.

switch mode power supply its use to provide power suppy to computers

Switch Mode Power Supplies are the current state of the art in high efficiency power supplies. Conventional series-regulated linear power supplies maintain a constant voltage by varying their resistance to cope with input voltage changes or load current demand changes. The linear regulator can, therefore, tend to be very inefficient. The switch mode power supply, however, uses a high frequency switch (in practice a transistor) with varying duty cycle to maintain the output voltage. The output voltage variations caused by the switching are filtered out by an LC filter. SMPSs can be used to step-down a supply voltage, just as linear supplies do. Unlike a linear regulator, however, an SMPS can also provide a step-up function and an inverted output function. Typical applications are given below.

"switch mode power supply" It helps in uninterrupted power supply