Metra Electronics DAT Combo Manual de usuario descargar pdf (Pagina 41)

SWITCH

OUTLET

FILAMENT

TRANSFORMER

J1

J2

PLUG

BINDING

POSTS

FILM

CAN

MOUNTING

SCREW

CAN

JEWEL

SOCKET

COVER

LAMP

J2

J3

Compare

the

pictorial

diagram

(top)

with the

schematic

diagram below,

side of

the parts

list.

Connections

to the outlet

will vary

depending

on

the type and

style you

chose. A duplex

type

may be

handy in

the future

-if you

add

an AC-

powered

print-

exposure

meter. While other cans

may be

used

to house the miniature

safe

lights

the

35mm

film

cans

(above)

are usually

plentiful

around

the

darkroom.

You can easily

tailor the

completed

system

(left)

to

suit

your

own

needs.

The

lamps are powered

by

a 6.3 -volt

fila-

ment

transformer

which is enclosed

in a small

wooden box

at

one

end

of

a

board

used for a

base

-the

front portion

of the

base supports

the timer

itself. The

various

dimensions

of

the

box are

adjusted to

suit the size

of the

timer.

The

top

of the box

holds a line switch

and

four

binding

posts;

the right side, a

single

AC outlet

-for the

timer's

AC plug.

The

light for

the timer

dial connects

to

one pair

of binding

posts, the

enlarger

-lens

light

to the other.

Lamp cord

is fine

for the

FEBRUARY

-MARCH, 1967

J4

J5

PARTS LIST

J1- Outlet (Female

power receptacle)

J2 -J5-

Binding posts,

insulated

S1-

Toggle switch, s.p.d.t.

T1 -6.3 -volt,

1 -amp.

sec;

117 -volt pri filament

transformer

(Lafayette 33R3702 or equiv.)

2 -Pilot

lamp assemblies -red

jewel (Lafay-

ette

33R6109 or

equiv.)

2 -#47

pilot

lamps

Misc. -Film cans, wire, solder, wood

stock,

glue

and

nails, machine

screws, etc.

Estimated

cost: $2.50

Construction

time:

1

hour

purpose. A single pair of posts

would

serve

just

as

well,

since

the

lamps

are

in parallel,

but the extra pair is

handy

if still another

light is

wanted,

perhaps to illuminate a

clock

face or

a paper

safe. There is absolutely

no

shock

danger from the low- voltage

wir-

ing

powered

by the

filament

transformer.

Placed next to

the enlarger,

the

timer

-

transformer

unit is

very

convenient to oper-

ate. The

bright red jewels

end all squinting,

yet

do

not fog the fastest

black

-and

-white

enlarging papers.

45

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