AEG Electrolux ERN 2922 User Manual download pdf (Page 42)

PARTS

LIST

Semiconductors

D1-

1N4001

rectifier

diode

D2-

1N914A

switching

diode

ICI,IC5-

CD4093

CMOS

quad

2 -input

NAND

gate

IC2,1C3

-555

timer

IC4 -7805

+ 5 -volt

regulator

106-

CD4013

dual

D -type

flip -flop

IC7-

CD4049

CMOS

hex

inverter

IC8-

CD4520

CMOS

dual binary

up counter

IC9 -2716

EPROM

IC10-

SP0256

-AL2

speech

processor

(Radio Shack

Cat.

No.

276

-1784)

ICIl

-LM386

audio

amplifier

(Radio

Shack

Cat.

No. 276 -1731

similar)

IC12

-7812

+ 12 -volt

regulator

LED1

-Green

yellow T -1%

light

emitting

diode

LED2

-Red

T -l' /, light-

emitting

diode

Q 1 -TIP

120 or similar

npn

silicon

power

transistor

RECT1

-50 -volt,

1- ampere

bridge

rectifier

Capacitors

Cl ,C6,C

14,C20,C24-

-µF,

-volt

tantalum

C2,C32,C33-

4,7

-14F, 15

-volt

tantalum

C3,C4,C5,C7,C9,C

12,C 13,C

18,C

19,

C29,C31-

0,01 -1

F Mylar

C7,C

11,C 15,C21,C22,C24,C27,

C28,C30-

0,1 -µF

Mylar

C8-

10-µF,

25 -volt

electrolytic

C10-

470 -µF,

-volt

electrolytic

C16,C17

-22 -pF

ceramic

disc or

Mylar

C25-

100 -µF, 35

-volt

tantalum

C26-

2,200 -µF,

25 -volt

electrolytic

Resistors ('''h -watt,

5% tolerance)

R 1,R23 -1,000

ohms

R2 -6.8 megohms

R3,R11,R12

-2,200 ohms

R4,R5,R8- 27,000 ohms

R6 -100 ohms

R7,R9 -1

megohm

R I O,R

-4,700

ohms

R13,R18-

10,000 ohms

R14,R19-

100,000 ohms

R15- 150,000

ohms

R17-Not

assigned

R20,R21- 33,000

ohms

R23

-10

ohms

R22- 50,000 -ohm

audio

-taper

pc -type

trimmer

potentiometer

Miscellaneous

PB1-

Piezoelectric buzzer

-Spst switch

(see text)

XTAL-

3,12

-MHz crystal

(available

from

Radio Shack and

Digi

-Key)

Printed

circuit

boards

(see text);

small

8 -ohm

speaker;

magnetic

sensors

(see

text); 9- to

12 -volt ac,

1- ampere

power

transformer;

6 -ft.

ac line

cord

with

plug;

DIP sockets

for all

ICs

except

IC4 and

IC12;

two small

rubber

small

rubber

grommets

panel clips

for

LEDs (see

text); phono

jack

and plug

for speaker

(see text

for

alternative);

three -lug

terminal

strip;

small- diame-

ter

heat -shrinkable

tubing; barrier

block or

screw

-type

terminal

strip

for

connection

sensors

(see text

for al-

ternative);

suitable

enclosure;

lettering

kit; machine

hardware; speaker

cable;

hookup

wire;

solder;

etc.

complex

sounds.

Each sound

pho-

neme is

vocalized differently,

de-

pending

its

position

within

word.

The SPO256

-AL2 contains

allophones

plus

five pauses.

Using

these, you

can synthesize

an un-

limited

vocabulary by addressing

specific

allophones

in the appro-

priate sequence.

When you use the

allophones,

you

must think

in terms

of sounds

rather

than

words or letters.

In this project,

will

program

the speech

processor

chip

vocalize two different

mess-

ages.

To do this,

will

use

the

EPROM

identified

Fig. 1 as

IC9.

One of

the

NAND gates

in IC5 op-

erates as

a logic oscillator.

The out-

put of this

oscillator,

at pin 3,

is fed

to the

input at pin

1 of dual binary

counter

IC8. For each

pulse detected

at pin

IC8, count

-up

from 0 to n

occurs,

where n is controlled

by the

output

at pin

16 of

IC9,

which resets

IC8

via IC6 every

time

the ICIO

speech

processor

chip's

output

at pin

24 ceases

sending

its message

to be

vocalized

the audio

amplifying

section

of the

circuit.

In this project,

use addresses

128 through

202

in EPROM

IC9 to

store

the data

for the

first message to

vocalized and

addresses

256

through 306

to store

the data

for the

second

message

to be

vocalized. By

connecting

the outputs

at pins 3

through 6 and

11 through

IC9

the

binary

address

inputs of

IC9

shown, the desired

sequential

data

programmed

into the

EPROM can

be sent

via the outputs

lines at

pins 9,

10, 11, 13,

14 and 15 of

IC9 to

the ad-

dress inputs

at pins

18, 17,

16, 15, 14

and

13 of speech

processor

IC10.

Shown

Listing 1

is an example

of the data

program

that can

fed

into the EPROM

have the synthe-

sizer

section

of the project

vocalize

the first

message.

This data program

was

taken

from the "dictionary"

supplied

with the SPO256

-AL2,

which is

written in decimal

code.

The

addresses

were

calculated

according

to the

binary

weight

of the

two

line

A7 and

A8 address

inputs

IC9 at

pins 1 and

23. For example,

when pin

1 of

IC9 is at a

logic

1, the binary

ad-

dress

is 128.

You program

the first

message so

that

it is stored

address

locations

128 through

201

(see

Listing 1),

where the numbers

1 through

4 and

40 reset the

speech

processor

chip

and

the binary

counter,

respectively.

If pin 23 of

IC9

a logic

1, you

will hear the

second

message (see

Listing 2), starting

address

256.

When the NAND

gate output at

pin 3 of IC5

is at a logic

1, the IC8

counter

advances

one count.

There-

fore, EPROM

IC9 sends the

respec-

tive

data to speech

processor

chip

IC10.

Now,

when

the output

at pin 3

IC5

goes

logic 0, a

negative

pulse

variable duration

is sent to

address

load

input pin

20 of ICIO,

which

causes

the speech

processor

chip to generate

the

desired allophone.

Referring

to the upper

circuit

Fig. 2,

when IC11 is amplifying

and

delivering

the allophone

signal to the

speaker,

the

standby

output at pin

ICIO goes

to a logic

O. In turn,

this

resets the

T3 period of

the timer cir-

/ MODERN

ELECTRONICS

/ February

1988

Say You Saw

It In Modern

Electronics

1 2 ... 37 38 39 40 41 42 43 44 45 46 47 ... 79 80

Comments to this Manuals

No comments

AEG Electrolux ERN 2922 User Manual Page 42

Comments to this Manuals

Related products and manuals for Unknown AEG Electrolux ERN 2922