AT&T PC 6300 - Power Supply

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SYSTEM

OVERVIEW

Power

Supply

Permanent

driftings

of

the

nominal

voltage

±10%,

that

allows

two

ranges

of

correct

operation:

90

to

132

V

and.

180

to

264

V.

The

transient

driftings

are

shown

in

Figures

2-18

and

2-19.

Nominal

operating

frequency

of

50

and

60

Hz

with

acceptable

variations

of

±5%.

A

current

surge

is

acceptable

in

the

power

up

transient

as

long

as

it

does

not

exceed

15

amperes.

Both

the

LA16

and

the

LA16/B

power

supplies

have

4

amp

slow

blow

fuses.

2-44

Q

n

The

Power

Supply

is

the

metal

box

found

at

the

rear

of

the

System

yl

|

Module

between

the

disk

drives

and

the

fan.

The

PC

6300

uses

a

—

switching-type

LA16

or

LA16/B

power

supply

with

the

following

^

electrical

input

characteristics:

•

Single-phase

alternating

current

for

the

two

ranges

100

to

^

120

V

and

200

to

240

V.

This

is

done

using

a

main

voltage

,

1

1

changeover

jumper

mounted

on

the

printed

circuit

board,

a

different

line

cord,

and

fan

assembly.

The

total

power

output

is

163

Watts

(LA16)

or

182

Watts

(LA16/B).

V

{/

0'

•0

'fl

0

ri

n

n.

%

r

n

n

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