SMPS - rajiteducation

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2 Νοε 2013 (πριν από 3 χρόνια και 7 μήνες)

125 εμφανίσεις

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It is device which gives the power supply to the different components of
the system such as:



Motherboard


CD/DVD Drives(PATA or SATA)


Hard disk drive (PATA or SATA)


Floppy disk drive


CPU core


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Electrical connector used to carry DC or low frequency AC power


Connectors carrying small amount of power are called signal
connectors


Types of


connectors

AT power


connectors

ATX power

connectors

Standard

Peripheral


connector



Floppy


Drive power


connectors

2/3 Pin Mini

Plug type

connectors

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It

is

connected

to

the

Motherboard

to

give

power

for

on

board

components
.


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Molex

power

connectors

gives

the

power

supply

:

PATA

Hard

disk

PATA

CD/DVD

Drives

Voltage
:


RED

=
5
V

Yellow

=
12
V

Black=

GND


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SATA

power

connectors

gives

the

power

supply

:

SATA

Hard

disk

SATA

CD/DVD

Drives

Voltage
:


RED

=
5
V

Yellow

=
12
V

Orange=
3
.
3
V

Black=

GND


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Mini
-
Plug

power

connectors

gives

the

power

supply

:

Floppy

Disk

Drive

Voltage
:


RED

=
5
V

Yellow

=
12
V

Black=

GND


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PCI
-
E

6

Pin

power

connectors

is

used

to

provide

extra

12

volt

power

to

PCI

Express

expansion

card

Voltage
:


Yellow

=
12
V

Black=

GND


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Size


Select appropriate size which fits in your system case.


Connectors


No of Molex connectors


No of SATA connectors


12 V ATX Power connector


20/24 pin motherboard power connector


Wattage


Select wattage according to load.

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Power

Supply

fan

is

used

for

cooling

the

SMPS
.

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Without

Power

Good

signal

processor

can't

be

activated

along

with

motherboard

but

all

the

voltages

from

SMPS

will

reach

the

motherboard
.

Voltage

=

+
5
V

GREY


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It

is

always

on

when

the

AC

power

input

is

active,

even

if

system

is

turned

off
.

Violet

+
5

Volt

supply
.

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It

is

used

to

turn

on

and

off

the

system

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-
12
V


Used by some serial port


-
5V


Used by older FDD/ISA Cards


+3.3V


DIMM/PCI/AGP Cards( only in ATX)


+5V


Used in logic board of drives


+12 V


Used by motors in the system

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RL207 DIODE

NTC Thermistor

AC FUSE 5A

Dual ultrafast power diode

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330µF/250V

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DRIVER TRANSFORMER

SM TRANSFORMER

STARTER TRANSFORMER

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SWITCHING TRANSISTOR

C4106

DRIVER TRANSISTOR

C945

SWITCHING MOSFET

MTP3N60

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PC 817 Optocoupler IC


TL431 Shunt Regulator


KA7500B/TL494 Oscillator IC


KA339 Operational Amplifier
(Power good IC)

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BRIDGE

RECTIFIER
STAGE

DIODES

RL207X4

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