What is Power Supply (SMPS) | Explain Power Supply

The computer components would not be able to operate without power. So a device in the computer that provide this power is the power supply. A power supply convert 110, 220 or 240 VAC in to DC voltages. That’s a computer needs to operate.

What is SMPS (Switch Mode Power Supply)​

It is called SMPS because it convert or switch single mode of AC Current in  multimode of the DC Voltages. These voltages are ​

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+5VDC, -5VDC​

+12 VDC, -12VDC​

+3.3 VDC​

+ 5VDC Stand by power​

Power Connector​

• Power supply use four types of power connector.​
• ​

1. Floppy Drive Power Connector (Berg Connector)​
2. AT System Connector​
3. ATX Power Connector​
4. Standard Peripheral Power Connector (Molex Connector)​

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Floppy Drive Power Connector​

There are 4 pin power connector provide 2 voltages +5VDC carried on the Red wire and +12 VDC carried on the Yellow wire and two Black ground wire for 0 VDC ​

AT (Advanced Technology) Power Connector​

There are 2 six pin power connector provide the power of AT motherboard. It is oldest technology. It provide 4 voltage's (+5VDC, -5VDC, +12 VDC, -12 VDC with ground 0 VDC) ​

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ATX (Advanced Technology Extended) Connector​

There are 20 pin single power connector & provide the six voltages for the ATX motherboard. ​

+5VDC, -5VDC​

+12 VDC, -12VDC​

+3.3 VDC​

+ 5VDC Stand by power​

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Standard Peripheral Power Connector ​

There are 4 pin power connector and provide 2 voltages as same like floppy drive connector but it is larger and flatter then floppy. And provide the power of internal disk storage devices. (HDD, CD & DVD)​

SATA Power Connector​

There are 4 wires going to this connector. But finally convert into 15 pin connector and provides the power of the latest SATA HDD or DVD.​

Artical By Mr. Ajit Tiwari
(Technical Admin At Antero Technology Group)