Bgw 250c User manual

, .

OV/t·'

ERS

r·1AilUft.L

r10DEL

250C

STEREO

POHER

AMP

LI

FI

ER

t _

I -

I •

I

I _

-IMPORTP.NT-

PLEASE

READ

THIS

PAGE

BEFORE

OPERATING

YOUR

BGW

POweR

~~PLIF!ER

Your

ne~.;

EGW

pc<..;er

amplifier

is

designed

to

provide

years

cf

trouble

free

performance.

Observing

these

few

precautions

will

insure

proper

operation.

Never

connec~

the

output

of

cne

channel

with

that

of

another.

Never

connect

a

direct

shcrt

from

the

output

cf

any

channel

to

ground.

Connect

~he~ower

card

~o

the

proper

voltage

~a~ns

(normally

-:::ls

-;.;ill

be

105-120

'/olts

AC,

50-60Hz).

Do

not

remove

the

factory

le=.d

seal.

?JU.plifiers

'.-lill

not

~e

covered

under

warran~y

if

~he

seal

is

braken.

:~ere

are

NO

adjust~en~s

wi~h~n.

! .

\ .

TABLE

OF

CONTENTS

1.

DESCRIPTION

2.

SPECIFICATIONS

4.

FACTORY

SERVICE

5.

INSTALU.TION

A.

Unpacking

B.

Mounting

C.

Output

Connections

D.

Input

Connecticns

E.

AC

Mains

and

Conversion

to

240

volts

6.

OPER.4.TION

7 •

SCEE!-'.P.T!C

D!AGRP-!'1

·1

8.

PARTS

LIST

10.

SERVICE

AU7HCRIZA'!!ON

FORM

1.

DESCRIPTION

The

BGH

Model

250C

is

one

of

the

most

advanced

dual

solid

state

power

amplifiers

available.

Unique

design

features

incorporated

in

the

Model

250C

make

it

virtually

"FAIL

SAFE"

and

free

from

accidental

damage

caused

by

human

error

in

audio

service.

A

fast

acting

relay

circuit

is

employed

as

a

safeguard

for

your·speakers.

The

circuitry

controlling

the

relay

constantly

monitors

the

individual

outputs

of

each

channel.

~_en

any

positive

or

negative

DC

component

of

more

than

+10

volts

occurs

at

the

output,

the

circuit

activates

the

relay

which

disconnects

the

speakers

from

the

amplifier.

The

speed

at

which

the

relay

responds

is

approximately

20

milliseconds

(see

figure

1).

The

relay

circuit

also

supplies

a

tL~e

delayed

cennection

of

~he

spe~~ers

to

the

amplifier

to

eliminate

unwanted

noises

at

turn

on.

On

the

front

panel,

the

en-off

switch,

gain

controls,

and

the

L.E.D.

pilot

lamp

and

clipping

indicators

are

mounted

for

ready

use.

Tne

packagL!g

inside

your

250C

is

lli!like

ordi~ary

power

amplifiers.

Each

ch~!nel

assembly

is

on

its

ewn

separate

module,

which

simply

plugs

in

or

out

fer

quick

and

easy

service.

Each

of

these

units

is

constructed

on

a

large

aluminlli~

extrusion.

The

~otal

radia~i~g

surface

area

of

each

heat

sink

is

330

square

inches.

The

heat

sinks

~ave

mating

circuit

boards

which

carry

the

passive

components.

Each

unit's

wiring

is

identical

with

the

circuits

are

pho~o

etched.

The

heat

sinks

plug

in

with

~~

8-pin.

cennector.

The

O'..ltput

stage

of

your

al!lplifier

uses

the

!:lost

advanced

tj""?e

ef

transistors

available.

~ese

large

geometry

power

devices

have

large

safe

eperating

area

aleng

base

with

extehded

power

bandwid~h.

All

the

semiconduc~ors

in

the

output

stage

are

in

int;~ate

contac~

wit~

the

hea~

sink.

~~e

bias

circui~

is

also

~ounted

on

~his

::'so~::-:'erm

"Nh~cn

provides

rock

steady

bias

stability

\vic:h

tem~era~~e.

The

voltage

gain

circuits

are

alse

lllounted

on

the

sa...'Ile

circuit

card.

A

true

operatienal

a...'Ilplifier

integrated

circuic:,

her-

metically

sealed

in

a

metal

can,

ac~s

as

the

front

end.

T~e

op

amp

(as

they

are

called)

is

a

special

anit

featuring

high

speed

as

iP...z)

and

a

high

sle''''

rate

(50

volts/!:licresecond)

yet

still

having

very

10f..,

noise

due

to

i

ts

darli~gton

input

stage

and

careful

design.

The

op

amp

stage

is

followed

by

a

discrete

cemplementary

~a~r

acting

as

active

current

sO'..lrce/sink

and

provid~g

additienal

voltage

gain.

!he

current

scurce

is

the

ideal

way

te

drive

Gl.e

OU~pU1:

s~age

whic!1

is

basically

a

'lol"tage

fellower.

-

~

.

This

sophisticated

circuit

design

makes

for

an

extremely

accurate

amplifier.

The

open

loop

gain

is

higher

than

found

in

the

competitors

T

products..

The

accuracy

of

an

amplifier

is

a

function

of

the

ratio

of

the

open

loop

gain

to

the

closed

loop

gain.

In

this

case,

the

open

loop

gain

is

about

1,000,000.

This

extremely

accurate

signal

processing

enables

the

Model

250C

to

drive

speakers

at

very

high

levels

while

adding

absolutely

no

coloration

of

its

own.

Even

at

mill

hIatt

levels

the

output

waveform

exhiBits

no

sign

of

crossover

distortion.

The

dynamic

range

capability

of

a

typical

250C

is

almost

1~5dB.

2 •

~

-

I r

--

---

-

- -----

1

second

nmnlTI1TOTrrnmlrrrrllllllili

rrnr

nl

SPEAKER

PROTECTION

TIME

D.C.

VOLTAGE

ON

SPEAKER

TERMINAL

075

ms

VS.

SIIUT

DOWN

TIME.

750

filS

625

rns

500

IRS

w

375

ms

250

ros

125

inS

-

o

10

-V

20

V 30V

40

V

50

V

50

V

70

V 00 V

D.

C.

VOLTAGE

Figure

1

2. SPECIFICATIONS

The

followi:lg

specifications

are

guaranteed

minimum perfc::'r.1ance

levels,

:lot

typical

or

ces't

case

mllnbe~s

measured

ti.'"1de:,

c.esired.

conditions.

All

'test

procedures

used

are

accorc.ing

to

t~e

most

conservative

tec~iques

i:l

use

~oday.

STEREO

MODE

-8

OEP.S

POWER

OUTPUT:

100 'i;"atts

average

continuous

pCrder

per

cha::nel

TOTAL

F..ARMONIC

DISTORTION:

Less

th~'"1

0.1% f:'om

.25-105

watts

~er

cha:lnel

POI-iZR

BAND:

c.at

rated

porHer 1

2a

~z

-20

k..:':..z

DTPw'"T

SENSITIVI'r!:

Approx~:nately

1.

5

volts

requ:"red

for

':'..l1l

ou'tp,~t

DA.l."!?ING

?ACTOR:

Greater

tha...'"1

500

at

low

freq'J.erl.cies

S:'EREO

~'!ODE

-4

O~S

pctVER

OUTPUT:

126

watts

average

ccnt

....

:"1'..lOUS

povTe.!"

per

clia.:,

....

"le.l

TC:'.:l.L

::".!3..:.'10NIC

:ISTC~T!mr:

..

...

~c.

_~

--~-

~ess

~~an

0.15%

frc~

.2S-1S~

?Oiti::?

=J..l~J:

2a E= - 2

'J

kEz

GA::-r

:

2Sd.3

l20x)

OU:'?TJT

:21P'E:JP1~C::::

Desi~ed.

for

any

load

~pedance

greater

t~n

~

c~s

?mfE:?

CU7?TJ7:

: 3J

",.;a~-:s

a'le~:.g==

c'.J~"':::"'-.."...,;.cu.s

?O~'ie~

:'G:

..

~

..

L

::..~_.rt~C'~IC

J:S::,2.::C~r:

:'ass

-::--:a.:l

.l%

:~o~

.2=-23G

"NC:~--:S

-:e=,

c!:..=.l"'J.:1e:

?C~'iE?~

2•

.!J~D:

2JE= - 2

G::E=

-

I,

.

INPUT

SENSI:IV!T~:

App~oxima~;11

.75

volts

~eaui~ed

for

full

ou~put

~ONO

r!ODE

- 8

OF.HS

PO

\VE..~

0

U:PUT

:

251

wa~~s

ave~age

continuous

power

TOTAL

F~Jl~ON!C

D!STOR!ION:

Less

than

.15%

from

.25-360

wa~~s

pe~

char~el

POWER

BAND:

20

Hz

-

20

kSz

INPUT

SENSITIV!TY:

Approx~a~ely

.SO

volts

~ecui=ed

for

full

ou~u~

GAIN:

320.9 (4.0x)

OUTPUT

r:!pED.A1'rc~:

De5~gned

for

ar.y

load

~~eca~oe

~eat;~

tha~

4.

o~s

F~EQ1J~rC~

RES?ONSE:

+0,

-.2Sd3

20Hz

~o

20kP.z

+0,

-3d3

2~z

to

5S~qz

!:-!

DISTCRTION:

(SO

anc

i

k~z

~:l)

:".:55

t::'a.'"'l .02%

at

~a-:;c. ?O'ile~

I:,I?Tj:'

:!::1:::~P.1TCE:

w.

7 , 000 0

r-.ms

?~IS:::

7::~~:

.: :n:'c=::sacc:!c.s

;:,_7;:,:

~.1r~

:ro

:SE

(2

GE= - :

JkEz

)

:J5

d3

~elow

ratec

pcwe~

?C~'lZ~

?,EQUI~:2:'!E:~':':

,:-

..

1']5-120

volts

50-60::.=

-'-

'10:'

-:5

~:~!

r

c~r:

!~~e

~e:ay ~~lay

~~~~

C~,

will

a?pear

a-

cu~;ut.

I •

I .

OUTPUT

PROTECTION:

Each

channel

is

protected

against

shorts,

open

circuit

operation,

mismatched

loads,

etc.

LOAD

PROTECTION:

A

unique

relay

circuit

protects

speakers

against

malfunction.

OVERALL

PROTECTION:

Power

line

is

protected

'IIi

th

fast

acting

circuit

breaker.

ilo

fuses

of

any

kind

are

used.

Two

thermal

switches

(one

per

channel)

protect

against

over

temperature

operation.

Controlled

power

bandwidth

and

slew

rate

protect

tweeters

and

~~plifier

against

excessive

high

frequency

operation.

Input

overload

protection

is

afforded

op

amp

by

series

limiting

resistance.

POWE~

SUPPLY:

A

large

power

transfor~er

with

t~in

primary

windings

is

~sed.

Computer

grade

electrolytic

capacitors

storing

over

22

joules

of

energy,

and

a

25

amp

bridge

rectifier

are

employed.

Two

zener

regulated

supplies

power

each

operational

amplifier

front

end.

POf../ER

REQUIRElSN'r'S:

Unit

reauires

either

l05-l20V

AC

er

2l0-2~OV

50-60Hz

power.

A 5

amp

-circuit

breaker

is

supp

lied

fer

units

'.-lired

for

120?

operation

or

a

2.5

amp

brea~er

for

2~OV

cpera~ion.

HEAT

SINKnrG:

Each

channel

has

i

ts

o~vr.

removable

heat

sink.

Each

extrusion

has

330

square

inches

of

surface

area.

CE..A..SSIS:

A

heavy

steel

c~assis

forms

a

prot:ective

cage

for

u~~atc~ed

mechanit;al

streng:t!1.

A

3/15"

al'..x.i--lI.l.ffi

r":.ck

mount

panel

is

suoolied.

All

modules

are

bolted

to

the

cr.assis.

The

pewer

s~pply

is

set

close

to

the

front

~a~el

to

allew

racx

mount:i~g

p';

;-hou

....

:.....~e

__

"se

'-

ot:

~

____

.j

~

or

.:::··.,..~o

.....

t-

ue

'"'u':,.4."

'l"'a';

~

-l,..Ir.r:-

~"'f_'-

I".

••

.J.

__

J.

CONNECTCRS:

Out?ut:

Standard

3/~1t

spaci:1g,

;:

~

..

ay

bindi::g

pos~s

fer

ou~puts

(color

coded

for

easy

identi~icaticn).

l:nDut:

l/~"

phone

jack,

3

female

audio

connector.

AC'Line:

Three

wire

grounded

~ail

connector

on

fi~e

foot

. . ,

In1.n. caD

...

e.

~ODULZS

:

,!,:"ree

plllg-in

:nodules

contain

95%

of

the

ci.rcui

t.ry.

:lodules

ccnsis~

of

two

hea~

sink

channel

assemblies

and

o~e

relav

circ'..li~

board.

CIRCUIT 30ARCS:

F:2l-:le

retardant

glass

epoxy

beards

:)er

ill':".:..

s~ec.

6 •

DI1'!ENSIONS:

Panel

19"

IV

x

5~"

H x

11-3/4"

D -

black

annodized-grained

alumi:lum.

The

notchi:lg

is

standard

E.!.A./Western

Elect~ic.

fNEIGHT:

27

pounds

net

weight.

35

pounds

packaged

weight.

Shipping

container:

a

unique

double

boxed

system

providing

maximum

safety

for

the

unit.

7.

3.

f..JARRAN

TY

BGW

Systems

warr~!ts

all

power

amplifiers

for

a

period

of

three

years

from

date

of

manufacture.

This

warranty

covers

both

defects

in

workmanship

and/or

materials.

If

malfunction

does

occur,

the

product

will

be

repaired

or

replaced

(at

our

option)

without

charge

for

materials

or

labor,

if

returned

prepaid

to

BGW.

The

warranty

does

not

cover

equipment

damaged

due

to

negligence,

misuse,

shipping

damage

or

accident,

or

if

the

serial

number

is

defaced,

altered

or

removed.

Further-

more,

units

that

are

altered,

modified

or

improperly

serviced,

in

any

instance,

will

not

be

repaired

u~der

terms

of

warranty.

4.

FACTORY

SERVICE

Should

service

be

required,

please

fill

out

the

Service

Authorization

Fo~

and

mail

~~

to

BGW

Systems.

All

units

must

be

shipped

prepaid

in

the

factory

supplied

sn~pping

container,

in

order

to

prevent

damage

in

transit.

Units

will

be

returned

by

freight

collect.

S.

INSTALLATION

UNPACKING:

iI _

Your

BGW

~ower

amolifier

is

shiooed

in

an

advanced

double

boxed

.

.-

.

..

~..

container:

The

container

should·be

saved

~n

even~

~ne

un~~

is

moved

or

shipped

at

some

future

date.

Replacement

containers

are

available

from

BGW

Systems.

I

I •

Inspect

the

unit

for

damage

ih

transit

i~~ediately

upon

receipt.

If

damage

is

found,

notify

the

transportation

company

~ediately.

On2..y

the

consignee

may

institute

a

claim

'..;i

th

the

carrier

for

shipping

damage.

SGW

will

cooperate

fully

in

such

e'/ent.

Be

=ure

~o

save

the

container

as

evicence

of

dawage

for

the

shi?per

to

i~spect.

~CUNT::NG:

T:'1E

BGhT

::lON'er

a':!.o

is

supplied

"lith

a

heavy

sta..'1ciard

19"

rac!<

?~,e:.

The

~'1it-may

be

bolted

into

a

rack

by

the

front

panel

as

long

as

provisions

fer

~res~ricted

air

flew

are

provided.

Good

7entilation

practice

wi.ll

provi~e

for

air

flow

above

and.

bele~

~he

unit.

I~adequate

ventilation

may

cause

the

protective

thermal

s"tli

tcne

s t

':

J

shut

-:he

unit

eff.

Nor~al

Installation:

All

connections

should

be

made

before

iJCT..;er

is

aDo

lied"

The

250C

is

desi~ed

to

operate

in

e~~her

the

Stereo-(2-channel)

mode

or

Monaural

(bridged)

mode.

A

slide

switch

loca-:ed

Ch

the

rear

of

the

unit

swi~ches

from

one

~ode

to

the

other.

Select

the

~ode

required,

then

follcw

~he

directions

~elcw.

8 •

INPUT

CONNEC~IONS

-

STEREO

MODE

Shielded

OU~?ut

cables

from

the

preamplifier

should

be

connected

to

~he

two

input

jacks

on

the

amplifier.

On

the

Model

250C

the

input

jacks

requ~re

standard

1/4"

diameter

phone

plugs;

(~he

input

lL~es

should

be

unbalanced)

or

three-pin,

male

audio

connec~ors

(such

as

the

Cannon

XL

Series,

or

Switchcraft

A3

Series).

To

use

the

Model

250C

with

high

impedance,

unbalanced

input

lines,

use

the

jumper

plug

provided

in

the

transformer

socket

and

connect

the

input

cables

as

follows:

(f)

2

MODEL

SIGNAL o 0 25CC

3

SOURCE

HI

o---v

o

DrpU~

INPUT

CABLE

/I""

NO~E:

SHIELD

NOT

CONNECTED

TO

.A.}rfTEDTG

no

...

SIGNAL

SOURCE.

To

use

tha

Model

2SaC

with

balanced

input

l~~es,

remove

. l

the

j~per

plugs

frem

the

transformer

sockets

and

replace

them

with

tr~~s=ormers

of

~he

desired

Lnoecance.

C~nnect

the

~~put

cables

as

follows:

-

~--~

:~CJE::"

SIGNAL

1

o a

O~C

2SaC

SOURCE

3

(!j)

fl)

z

,"''CTT''!'

C __

*_

..J_

"'"

\..J

Inout

connec~ions

should

be

as

short

and

direct

as

oossible.

Shielded

cables

~ust

be

used

and

beth

should

originate

fro~

the

same

source

(i.e.,

if

both

ch~~els

de

net

come

same

pre~ps,

ground

loep

problems

may

arise).

~e

sou=ce

must

be

capable

of

delivering

1.25

velts

full

output

from

the

amplifier.

frem

for

~ne

9 •

For

maximum

signal

to

noise

ratio

driving

source

impedance

should

be

less

than

5,000

ohms.

Radio

frequency

interference

(RFI),

when

it

occurs,

can

be

reduced

or

eliminated

by

employing

one

of

the

filters

shown

below.

They

should

be

built

in

shielded

enclosures

such

as

3Smm.

aluminum

film

cans.

1.8

K

Al

A!)

600

CF...l.'1

....

V'v¥l

SOURCE

.003uF

-r

6dB/octave

rolloff

above

~

20kHz.

SmH(JH

Miller

6304-)

l2dB/cctave

rolloff

above

____

~COO-~~,~

__-

20kHz

At'!P

6000HM 1

SOURCE

.018uF

--r

8

INFU7

CONNECTIONS

BRIDGE

MODE:

?o:low

~he

same

procedure

as

outlined

for

Stereo

~

·

~cde

but

use

only

one

shielded

cable

plugged

into

channell.

I::o

:101:

connect

any~hing

to

the

input

of

channel

2.

OUTPUT

CONNEC7IONS

STEREO

MODE:

Connect

the

left

speaker

to

the

binding

posts

marked

CH

1

~~d

the

right

speakers

to

the

bindL~g

posts

marked

CH

2.

Observe

the

phasing

of

the

spe.:>~,<ers.

Most

cor-nectars

on

spea~<er

cabinets

are

either

color

coded

or

marked

+,

-.

Connect

t~e

black

or

~inus

(-)

te~inal

0:1

the

5~e.:>ker

cabinet

~o

the

black

~inding

posts

on

the

~uplifier:

Connect

~he

ether

speaker

term;~al

to

the

red

binding

post.

lQ.

The

wires

used

for

the

sneaker

leads

should

be

of

the

largest

gauge

possible

in

order

to

retai~

the

highest

damping

factor

possible.

The

chart

provided

shows

the

relation

between

wire

size

and

damping

factor.

To

find

the

damping

fac~or

of

a

particular

configuration

of

wire

size

and

length

and

speaker

impedance,

take

a

ruler

and

line

up

the

length

of

two-conductor-cable

used

with

the

wire

gauge

used

and

mark

the

resulting

source

resistance.

Then

line

u~

this

value

with

the

resistance

of

the

load

and

read

off

the

resulting

damping

factor.

For

dy~amic

moving

coil

speakers,

the

load

resistance

should

be

that

measured

with

an

ohmmeter

across

the

speaker

terminals,

not

the

m~~ufacturer's

s~ated

L~pedance

value.

For

electro-

static

spe~~ers,

the

ma~ufacturer's

value

should

be

used.

ror

best

results,

choose

a

configuration

of

wire

size

and

length

that

will

result

i~

a

d~~ping

factor

of

50

or

greater.

Ideally,

the

output

leads

should

be

connected

to

the

amplifier

with

standard

ba~ana

plugs;

however,

the

five-way

action

of

the

bindi~g

posts

permits

the

use

of

t

inned

~.;ires

or

spade

lugs.

OuTPUT

CONNECTIONS

BR!DGE

XODE:

Follow

the

s~e

orocedure

as

outlined

for

Stereo

mcde

but

CO~Lec~

~he

singie

output

acrOS3

the

twc

red

binding

posts

of

Chan~els

1

and

2.

Do

not

connect

anything

to

the

Channell

or

Channel

2

ground

bi~dL~g

posts.

The

2S0C

is

furnished

with

a

three

~ire

cord

and

a

ground

plug.

Defeating

the

grounding

provision

may

create

hazardous

condi~ions.

:~e

amplifier

should

be

plugged

in

only

when

it

has

been

established

that

it

is

~ired

for

the

correct

oower

~a~~s

voltage

~d

after

all

ether

connections

to

~he

~;~li=ier

have

been

ma

·

::e.

The

mains

CAC

li::e)

voltage

is

indicated

on

t::'e

serial

nl.!.I:lber

label

on

~he

rear

of

the

amplifier.

~~plifiers

su?plied

for

use

in

the

United

States

are

fac~ory

wired

for

120

volts.

Only

the

i::dicated

~ains

voltage

should

be

used.

!f

the

mains

voltage

must

be

changed,

see

~he

1.1.

CH&~GING

THE

MAINS

VOLTAGE:

The

mains

voltage

may

be

changed

in

the

field

by

following

procedure:

1.

Remove

the

amplifier

cover.

2.

Change

barrie

of

the

transformer

wire

r

strip

to

match

the

chart

below:

s

going

appropr

to

iate

the

mains

column

TOP

!.

l20V

24-0V

1

2

Yellow

Brown

3

Red

Yellow

Orange

4-

Orange

Blue

5

Red

,.

0

Green

3.

Change

~he

circuit

breaker

on

~he

fron~

?~~e:

as

=ollows:

ror

100

and

120

velt

operation,

use

S

amo.

For

24-0

volt

operation,

use

3

amp.

Replacement

breakers

are

available

from

BGlv

Systems

for

$10.

ao

each

,

postpaid.

Include

the

serial

:-.umber·

and

model

of

yeu:::,

ur.i~

r..;hen

yeu

order.

12.

---

-

,

~ a,

LCAO

scuaa

11SI5T.AHa

II5JSTAHa

~

1

I"

..,

~

·1

·

j

f·

,....---4.

=-••

::

~.

-~

I

::.

1-

~-..

-

.

.....

1.

2

E'CAL\fPLE:

It.

80

RS

2 .0411

OR

D.

F.

:a

ZOO

l.. '

CABLE LENGTH.OF

20

FT.

..lJfSi'lER: #:10 WIRE

FI~JRE

Z

SOURCE

~SIST_.\J.\lCE

A1ID

DAl·tPING

FACTOR

VS.

L:2:-TG7H

.:lJ.\ffi

sr:::=

OF

OUTPUT

LEADS

I _

6.

OPERATION

TURN

ON:

The

Model

250C

is

free

from

thumps

Or

transients

during

turn

on.

Often,

turn-on

transients

originate

in

the

preamp

or

t~~er.

This

is

especially

true

of

tube-type

units.

If

this

situation

arises,

turn

the

amplifier

on

after

the

other

units

have

had

sufficient

tL~e

to

stabilize.

PROTECTION:

Three

protection

circuits

are

employed

in

the

Model

250C.

1.

The

fast

acting

magnetic

circuit

breaker

shuts

-

the

unit

down

whenever

the

unit

draws

excessive

current.

2.

The

fast

acting

relay

circuit

i~stantaneously

disconnects

the

amp

outputs

from

the

spea~ers

if

any

condition

exists

that

will

damage

the

speakers.

3.

Thermal

switc~es

mounted

on

each

heat

sink

protect

the

amolifier

from

thermal

failure.

The

amolifier

will

shut

off

if

the

heat

sink

temperature

rises

above

85

degrees

Centigrade

a~d

will

~urn

on

again

when

the

temperature

drops.

Activatio~

of

the

thermal

switches

usually

means

that

insufficient

air

circulatio~

is

being

allowed.

13.

....J

-'

PARTS

LIS'f

R£fEt{CNCE PA1n' REfERENCC

PART

NO. NO.

DESCHIPTJON Q'rY.

NO. NO.

DESCRIPTION

Q'rY.

llEATSINlC

MODULE

IU~SIS'rORS

SEtlICONDUcrfORS

R20-33

II

050- 0330R

.330hm

5W

6

Q1

185

1

1-0410

110

1

110 1

R3

1

11025-2070

2.7ohm

2W

1

Q2

1854-0

1109

40409

1

R25,26,27

II

025

-1

{)

01 100hrn

2W

5%

3

Q5

185

1

1-6211

2N6211

1

1<35

11050-

300

1 300lllfi

5W

1

QII

1854-3583

2N3585 1

R23

,211

5005-6800

G80hm

!iW

2

Q3

1853-3053

40309

1

R22,10

5005-1002

100o\1lfi

!;,iW

2

Q6-11

185

1

1-0636

MJ15015

6

In6

,19,20

5005-6001

6800hrn

!;lW

3

Q12

5401

1

R2,6,9,13

5005-1003

1K

~W

II

CR1,2

1900-4740

1NI17

II

OA

2

R8)

II

5005-1502

1.5

K

!2W

2

CR3,

II)

6-9

1900-

1

1004

1N4004

2

H5

5001-2

1

191 2,

II

9}(

!;M

1% 1 1C1

1885-0318

LM31811

1

In,

RI12

5005-

1

1702 11.7K

!iW

2 Q12

1853-5401

2N5451 1

In

7)

18

5005-1503

15}(

!;M

2

Q1

1

1,13

185

11-00

113

MPSA13

2

R3)

15

,

II

0 , 36

5005

-11'/03

117

K

!2W

II

R7

,

II

.

5061-

1

1752 117.51(

!2W

1%

2

HARDWARE

R37

,38,

III

5005-1005

100

K

!2W

3

IU

5005-1006

1Meg.

!iW

1

0770-1312

Stand

off

II

)~39

5005

-1

00

II

10

K

!2H

1 B1532B

RI13

5005-3602

3.6

K

!2W

1

1231-1112

Lug Mo1ex 9

02-0

1

1-1

CAPACITORS

0723-33

1

17

.

Insulator

16

Shoulder

CII

,0

0100-00li7

117

pi'

2

CI3

0090-0120

120

pf

1

C2

0090-02110 21

10

pf

1

CII

I,16

0100-1000

1000

pf

2

C5,6

0129-00

1

17

.0

1

17

uf

25 V 2

CI5

0129-0100

.1

uf

25V

1

C17,18,19

0369-0100

.1

uf

100V 3

C1

0226-0010

10

uf

25V I

CI1,12

01

186-0010

10

uf

100V 2

C3

01

156-0050

50

uf

12V 1

C"I

0100-0068

68

pf

1kV 1

C20 0369-01170

,117

uf

100V 1

C10

0100-5000

5000

pf

lkV

1

14.

PAR'fS

LIST

HEITRE:NCE

PAR'!'

REFERENCE PAR'r

HO. HO.

DESCRIPTION

Q'l'Y. NO. NO.

DESCRIPTION

Q'fY.

PLUG 1 SOCKET, CONNECTORS

9999-2085

Feet

Rubber

4

200S

1231-3003

cnctr.Trn.

1

P1,2

1350-0000

Plug

0

2 COMPLETED ASSEMBLY

J5,0

9999-0111

Jack

Input

2

J3,6

1231-0008

Red

Binding

2

1000-1260

Heatsink

Module

post

1100-1260

Harness

JII , 'I

1231-0009

Black

13inding

2

9017-1250

Crowbar

post

TD1

0720-9126

Bapr'le

r'

Strip

1 PACKING CONTAINER

J11,12

9999-0130

Jack

Input

D3F 2

,I9,10

1203-0008

Socket

0

W/RI

2

9700-1260

Manual

1

9851-1250

Outer

Box

1

IIAIWWARE

9850-1250

Inner

Box

1

2605-()625

\-20x5/8

brsh.

II

9852-1250

Rail

Block

2

A1uIOinurn

985

1

1-0150

Corner

Block

8

0607-0125

~IDx120Dx.

12

II

LUGS

1313-3

1157

Lug

Crimp/llO

9

1322-9700

Lug

s1ipon

18

16-111

1321-5305

Lug

slipon

2

1231-1105

Lug

t--lo1ex 8

02-05-1

METAL

9002-1260

Chassis

250C

1

9000-1252

Front

Panel

1

9005-1260

Cover

1

MISCE:J.I.ANEOUS

P2

0706-0103

Line

Cord

1

S3

0611-0191

Switch

dput.

1

9999-0019

Tie

Wrap

25

1235-0001

Clamp

Cap.

2

1235-60311

C1dmp

Strain

He1 1

CDl

0650-0602

SvJi

tch

Rocker

1

0'/21-0312

Darrier

fish

1

paper

16.

BGW 250C User manual

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