46 Watts Up Power Supplies
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Transcript of 46 Watts Up Power Supplies
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WATTS UP - POWER SUPPLIES
How it works and what it does, and for the home DYI builders,
how do you pick out the right one.
Citation:
46
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THE POWER SUPPLY
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THE SHOCKING TRUTH..
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First lets find out what it does and what is inside
• BASIC FUNCTION:THE POWER SUPPLY CONVERTS
THE [AC] ALTERNATING CURRENT TO DIRECT CURRENT [DC].
• ADDITIONAL FUNTION:1) Provide STABLE DC current (12vdc) for fans and lights etc..2) Provide STABLE DC current (5vdc) for drives, USB and graphics cards and / or other power draws.3) Provide STABLE DC current board (~~3.3VDC) for power regulation for the CPU and chip devices
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HERE IS WHAT THE “MESS” LOOKS LIKE..
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POWER SUPPLIES – DETAILS ~ Cooling fan (s)
Some more costly or larger POWER SUPPLIES have more than one fan. The units have a bottom and side unitthat provide the adequate AIR FLOW to cool the heat sinks. Don’t forget also that the fans also contribute to cooling the entire computer’s case insides.
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POWER SUPPLIES – DETAILS ~ Heat Sink (s)
HEAT SINKS: IF you a Power Supply open, remembering they are considered FRU {field replaceable units}; The main concern will be to remove the dirt that may have accumulated there.
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POWER SUPPLIES – DETAILS ~ EMI line interference filter (s)
• All electrical devices have electromagnetic properties which can interfere with other electronic devices. The better quality power supply will have such feature
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POWER SUPPLIES – DETAILS ~ Input capacitor (s)
• These units are usually circular and can be more then one, and located nearest the input current (the 120 VAC) input plug.
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POWER SUPPLIES – DETAILS
output capacitor (s)
• These units are usually SMALLER and can be more then one, and located nearest the output wires to the plugs.
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• A feature in a more expensive or powerful unit. As the loads increase and more technology is utilized for the components, a more precise control of the output voltage becomes critical. It is usually a bare copper item in the power supply
POWER SUPPLIES – DETAILS ~ line conditioning circuitry
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POWER SUPPLIES –
DETAILS Power factor corrective
circuitry
• Used by all Power Supplies during start up to assist and make sure all the components start up safely
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The Power Supply
Demystified
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The water hose view
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Quality power supplies have labels that can
be very informative..
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Watch them
ratings
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CONJUNCTION JUNTIONCONJUNCTION JUNTION
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Main Power Connector, 20 pins
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Additional power for motherboard/video
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Power Plug for drives (not SATA)
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Floppy power connector
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SATA PLUGS – P0WER 15V
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POWER USE OF
COMPUTER PARTS FIELD
GUIDE (you add
them up!!)
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Discussions and ConsiderationsPage 1
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NO GUTS = NO GLORY
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Discussions and ConsiderationsPAGE 2
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Discussions and ConsiderationsPAGE 3
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Discussions and Considerations
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Discussions and ConsiderationsPAGE 5
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THE END