Metra Electronics DAT Combo Manual do Utilizador descarregar pdf (Página 74)

TAPE -SLIDE

-1aCl

ó

Z

previously

explained.

R2

knits

the

current

through the

gate circuit

of SCRI

to a

safe

value. C4 is the

filter capacitor.

The output

of the

oscillator

is also

fed

to

the stereo

-recorder

input

(from

J3)

and

it is

recorded

as the

sync signal

on

the

control

channel

of

the

tape.

The commentary

is

recorded in

the

usual

manner

on the

other

channel

of the

tape

at

the same

time.

During playback

the

output

of the

control

channel

of

the

recorder

is

connected

(via

J2) to

the

input

of

the

second

stage

of the

audio

amplifier

where it

is amplified,

recti-

fied

by

DI

and

applied

to the gate

of SCRI

-the

solid

-state

switch

powers

the

slide

-

changer

motor.

Microphone

Sync.

A small

crystal

micro-

phone can

be

plugged

into

J1 and

when

the

word "change"

is spoken

into

the

mike

there

is adequate

amplification

to

operate

the

slide

changer

mechanism

and

record

a

sync

signal

on

the

control

channel

of the

tape.

Tape

Deck.

If

only

a

stereo

tape

deck

(without power

amplifier)

is

available,

there

is ample

amplification

for

both

recording

and playback

of the

sync

signal

on

the

con-

trol channel

using

either

the

microphone

or

SI.

On

playback,

the

output

of the

tape

-

deck

preamp

(which

contains

the

sync

sig-

nal)

should

be

connected

to J1

for

the

necessary

amplification.

During

recording

the sync

signal

from

jack

J3

is connected

Inside

view

of

the

Tape

-Slide

Synchronizer

shows

most

of

circuitry

is

contained

on

circuit

boards

mounted

vertically

on

skirts

of

metal

chassis

box.

Ready -made

plate

covers

bottom

when

finished.

80

This

ver.,

on

of

Tape -Slide Synchronizer

has

top

-of-

the -cabinet

lettering

facing

operator.

Cables come out

of unit

on

the

side

of

cabinet away

from

the operator.

lu

ihc input rO

the

tape -deck preamp.

Using

Stereo

Recorder.

Extremely

smooth

operation

has been

obtained using

the

Tape -Slide

Synchronizer

with a

Wollen-

sak

T 1580 stereo

recorder.

With this

re-

corder

the

sync

signal can

be taken

off at

J2

(instead

of 13)

and

applied

to the

input

of the

control

channel

to record

the

sync

signal.

On playback

the

output

of

the

con-

trol

channel

can

he

taken

from

the external

speaker jack

and

fed to

J2

where it is ampli-

fied and

operates

the solid -state

switch.

With this

setup,

output

jack J3

is never

used

and

the

recorder

cable

need

not

he

changed

from J3

to J2

(in

the

Tape -Slide

Synchronizer)

when going from

record

to

playback.

(Continued

on page

118)

RADIO -TV

EXPERIMENTER

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