Metra Electronics DAT Combo Uživatelský manuál stáhnout pdf (Strana 73)

Complete

setup, ready

for

an automated

slide

show,

has Tape

-Slide

Synchronizer

between

slide projector

and tape

machine.

Use any

automatic

projector,

stereo

unit.

(model

D)

slide

projector.

Current

flows

through

the

motor

when

S3

is pressed.

(Numbers

1

through

4 shown

on

the slide-

changer portion

of

the schematic

are the actual

contact

numbers

molded

into

the Cinch

-Jones 4-

contact

chassis

socket

in

the slide

changer.)

When

the motor

starts

it operates

the

motor-

driven

cam

switch

(S4 -wired

in

parallel with

S3)

keeping

current

flowing

when

S3 is

released.

After

the

changer

has

completed

its

cycle

the

cani switch

opens,

the

motor

stops -and

everything

is ready

for

another

slide

change

when

S3

is pressed

again.

The Tape -Slide

Synchronizer

is

connected

electrically

to the

slide

changer

through

the

4- contact

plug and

operates

as follows:

Depressing

Sl connects

the collector

of

the

last stage of

the three

-transistor

audio

amplifier

(through

Cl)

to

the

input of

the

previous

(second)

stage

converting

it

into

a 1000 -Hz

feedback

oscillator.

The

1000 -Hz

signal

from

the ungrounded

secondary of

the

output

transformer

is

rectified by DI, passed

through

the RC

filter (R2

and C4)

to

the

gale

of SCR

I. The

1000 -Hz signal

appears

at

the

gale of

SCR I

as

a

positive

-going

pulse

-activating

the solid -state switch which

in

turn

powers

the

slide- changer motor as

PARTS

LIST

C1-

.01

-mf,

200 volt,

capacitor (miniature)

C2- .002

-mf,

200 volt,

capacitor (miniature)

C3- 1000

-mf, 15

-volt, electrolytic

capacitor

C4 -1

5 -mf, 15

-volt, electrolytic

capacitor

D1 -1N540

silicon

diode

F1 -2

-amp

3AG fuse

I1 -6.3

-volt miniature

pilot

lamp

J1, J3

-Phone

jack, miniature

open

circuit

J2 -Phone

jack, miniature

closed- circuit

P1-4-contact

plug

(Cinch -Jones

P- 304 -CCT

to

fit slide-

changer

socket)

R1 -5000

-ohm

miniature

potentiometer

R2,

R3 -50

-ohm

147 -ohm),

1 -watt

resistor

S1-

S.p.s.t.

normally -open

pushbutton

(Gray -

hill

30 -1

s.p.s.t.

or equiv.)

S2-

S.p.s.t.

slide

switch (Wirt

or equiv.)

SCR1- 117 -volt,

4.7 -amp

silicon

controlled rec-

tifier

(GE -Z1

or equiv.)

T1-

Filament

transformer,

117 -volt

to

6.3 -volt,

0.6

amp

Stancor

P -6465

or equiv.

Z1 -500

-volt,

1 -amp

(Mallory

FW -500

full

-

wave

silicon

bridge

or equiv.)

Z2 -200

-volt,

1 -amp

(Mallory

FW -200

full

-

wave

silicon

bridge

or

equiv.)

1 -3- transistor,

miniature

audio

amplifier

(La-

fayette

PK

-522

99C9039

or equiv.)

1-

Chassis

box,

6x5x21 /2 -in.

(cut

down from

91/2

x5x2

t /2;

Bud

AC403

or equiv.)

Misc.

-Phenolic

board,

terminals,

machine

screws, nuts,

wire,

solder,

fuse holder,

plas-

tic

(spaghetti)

tubing,

plugs,

etc.

Estimated

cost: $

14.00

Construction

time:

3 hours

DI

R2

FI

SLIDE CHANGER

AC

S4

I

LINE

CA

SWITCH

PI4 Pl3J

+ C3

IMF

S2

FEBRUARY -MARCH,

1967

6 3V PRI

Y

AC

LINE

Large

shaded

areas

show

original

circuitry

of

prewired

units

used in

Tape

-Slide

Syn-

chronizer.

Added

circuitry

is

outside

of

shaded

boxes.

79

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