Power Suppy Unit

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POWER SUPPY UNIT


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POWER SUPPY UNIT

A power supplyis an internalhardware component that suppliescomponents in a computer with power.The power supply converts a 110-115 or

220-230 volt alternating current (ACinto a steady low-voltage direct current(!C usa"le "y the computer and rated

"y the num"er o# watts it generates.
http://www.computerhope.com/jargon/a/ac.htmhttp://www.computerhope.com/jargon/d/dc.htmhttp://www.computerhope.com/jargon/d/dc.htmhttp://www.computerhope.com/jargon/a/ac.htm


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POWER SUPPY UNIT


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COMPONENTS OF POWER SUPPLY UNITTransformer

The transformer is a static device that transfers electrical energyfrom the primary winding to the secondary winding withoutaffecting the frequency. It is used to step-up or step-down the acvoltage level and isolates the remainder of the electronic systemfrom the ac power.

RectifierThe rectifier is a device used to change the ac power into pulsatingdc. The basic rectifier is the diode. The three basic rectifier circuitsusing diodes are the half-wave, full-wave center-tapped and full-wave bridge type.

FilterThe filter of the power supply is used to keep the ripple componentfrom appearing in the output. It is designed to convert pulsatingDC from rectifier circuits into a suitably smooth dc level. The twobasic types of power supply filters are the capacitance filter (C-filter) and RC-filter.


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COMPONENTS OF POWER SUPPLY UNIT

Voltage RegulatorsA voltage regulator is designed to provide a very steady orwell regulated dc output.


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POWER SUPPLY UNIT

$epa %-1&00ma (2015 model'C 'ower and Coolingilencer )50 (200) model


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TRASFORMER

$epa %-1&00ma (2015 model 'C 'ower and Cooling

ilencer )50 (200) model

Silencer is a single

transformer design cooled by

an 80mm fan and a pair of

massive heatsinks.

The main transformer has highdensity it easily copes with thetask.


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RECTIFIER



It uses one GBJ1506 rectifyingbridge in its primary, which candeliver up to 15 A (rated at 100C). As you can see in Figure 9this bridge is attached to aheatsink.

The single bridge rectifier isbolted on a dedicated heatsink.Its model number isLL25XB60

and it can handle up to 25A ofcurrent.
http://www.shindengen.co.jp/product/semi/datasheet/J534_LL25XB60.pdfhttp://www.shindengen.co.jp/product/semi/datasheet/J534_LL25XB60.pdf


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CAPACITOR



Rated at 400v 400uF

Rated at 400V, 330F, 105C


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FILTER

$epa %-1&00ma (2015 model

The AC receptacle incorporates a complete line filter(YO15T1) and reinforce it with two additional Y caps. Thetransient filter continues on the main PCB with three CMchokes, one X and two Y caps and an MOV.


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FILTER

'C 'ower and Cooling ilencer )50 (200) model

It providing two extra Y capacitors, one extra ferrite coil, one extraX capacitor and a ferrite bead attached to the main AC cable. Thispower supply also provides an X capacitor after the rectifyingbridge.


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PCB

$epa %-1&00ma (2015 model

These two small PCBs house some interesting components. On the

right one the PFC controller anICE2PCS01and anLM393voltagecomparator, which assists in overvoltage and undervoltageprotection, are installed. On the left PCB resides aUCC28950IC

which is the controller responsible for the main switchers and theother IC on this board is aUCC27324, a high speed low-side power

mosfet driver.
http://www.infineon.com/dgdl/ProductDatasheetICE2PCS01_v2_2+Oct2007.pdf?folderId=db3a304412b407950112b4182a3d24f8&fileId=db3a304412b407950112b427caa43ccfhttp://www.ti.com/lit/ds/symlink/lm393-n.pdfhttp://www.ti.com/lit/ds/symlink/ucc28950.pdfhttp://www.datasheetcatalog.org/datasheet/texasinstruments/ucc27323.pdfhttp://www.datasheetcatalog.org/datasheet/texasinstruments/ucc27323.pdfhttp://www.ti.com/lit/ds/symlink/ucc28950.pdfhttp://www.ti.com/lit/ds/symlink/lm393-n.pdfhttp://www.infineon.com/dgdl/ProductDatasheetICE2PCS01_v2_2+Oct2007.pdf?folderId=db3a304412b407950112b4182a3d24f8&fileId=db3a304412b407950112b427caa43ccf


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CAPACITOR



the widespread adoption of the120mm fan design.

It used 135 mm a high speed coolerADN512UB-A90. The rotation speed

is directly proportional to increase intemperature, which temperaturemonitoring system is used in thedevice, based on the temperaturesensor. For optimum air flowdirection using guiding plastic plate

with eight holes for cooling radiatorsof high-diode bridge.


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2015 MODEL

LEPA G-1600 MA


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2007 MODEL

SILENCER 750

QUAD

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Power Suppy Unit