1. Switch Mode Power Supply
Smps
Switch Mode Power Supply
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2. Switch Mode Power Supply
SMPS Is a Main Component of Computer, It Convert AC Voltage in to DC Voltage and Provide Required Power To all Computer Part’s, like Motherboard, Hard-disk, DVD R/W, FAN, etc...
Convert
SMPS
Input AC 220 V to 230 V
Output DC 3.3V, 5V, 12V
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3. Types of SMPS 1) AT (Advance Technology)
2) ATX (Advance Technology Extended)
ATX SMPS
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4. Difference between AT & ATX SMPS
AT (Advanced Technology) and ATX (Advanced Technology Extended) are two incompatible power supply standards. While both power supplies share some of the same connectors, the technology behind both of them is quite different, requiring different motherboards and computer cases. The AT style was used from approximately , while the ATX standard is current.
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5. Difference between AT & ATX SMPS
1. The power switch of AT style power supplies is integrated directly into the power supply itself.
2. This is a physical switch that turns the power supply on and off.
3. lower wattage less than 250 Support
4. AT SMPS Having 12 Pin’s Motherboard Power Supply connector. Divided in to 2 parts 6 pin’s P8 & 6 pin’s P9e power supply on and off.
1. ATX style power supplies use a "soft switch" that is controlled by the motherboard.
2. This enables a computer with an ATX power supply to power off via software
3. Higher wattage 300 to 400 Support
4. ATX SMPS Having 20 to 24 Pin’s Motherboard Power Supply Connector, Called P1 ATX Connector.
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6. AT CONNECTOR 5. Molex Connector 4 pin’s (HDD, DVD RW, FAN)
6. MINI Connector 4 pin’s (FDD)
7. 2 pins Connector Goes to Cabinet Power Button
5. Molex Connector 4 pin’s (HDD, DVD RW, FAN)
6. MINI Connector 4 pin’s (FDD)
7. SATA Molex Connector (HDD, DVD RW)
AT CONNECTOR
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7. ATX CONNECTORS
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9. SMPS Troubleshooting
To Check SMPS is working Or Not, take one copper wire and short it with green pin and black pin, if SMPS fan is spinning mean’s SMPS is ok. But SMPS Molex, Mini, and CPU P4 Connector Should be ok. We have to Check Voltage of Molex connector & Mini Connector and CPU Connector Manually.
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