Memorex CP8 TURBO UNIVERSAL REMOTE CONTROL Instrukcja Użytkownika Pobierz pdf (Strona 42)

100

Fig.

3 -The author's

prototype

the Electronic

Bandit was

built

on a printed- circuit

board, with

the components

surface mounted

on the copper -trace

side. Shown here

are

the locations

of the

components.

PARTS

LIST

FOR

THE

ELECTRONIC

BANDIT

SEMICONDUCTORS

Dl-D3-1N914

small

signal

silicon

diode

LED1 -LED15

-Jumbo

light-

emitting

diode

U1, U3,

U5-555

oscillator :timer,

integrated

circuit

U2,

U4, U6 -4017

decade

counter

divider, integrated

circuit

RESISTORS

(All resistors

are 1/4-watt,

units unless

otherwise

noted.)

R1,

R5,

R7, R11,

R13,

R17- 10,000

-ohm

R2, R8,

R14-

22,000

-ohm

R3,

R9,

R15

-4700

-ohm

R4, R10,

R16- 100,000

-ohm

R6,

R12,

R18- 15,000

-ohm

R19

-R21-

220 -ohm

CAPACITORS

C1 -C3

-1 µF, 16

-WVDC

electrolytic

C4- 10 -µF, 16

-WVDC

electrolytic

capacitor

05- 15

-µF, 16

-WVDC

electrolytic

C6-

22 -µF, 16

-WVDC

electrolytic

ADDITIONAL

PARTS

AND MATERIALS

B1 -9

-volt

transistor -radio

battery

S1-

Single -pole

single

-throw toggle

switch

S2-

Single

-pole single

-throw momentary-

contact

pushbutton

switch

Printed

circuit

perfboard

materials,

enclosure, IC

sockets,

battery

and

battery

holder,

wire,

solder, hard-

ware,

etc.

be soldered.

That

make mounting

the components

whole

lot

easier

when

the

time comes.

The components need

to be

altered (leads

bent to fit space)

for surface

mounting. Their

leads should

be pre-

tinned also. (A

complete description of

the

surface

-mounting

technique is given

in an article by Herb

Friedman

called

"SMT

Darkroom Spotmeter"

in Hands

-on

Electronics,

January,

1988.)

It's

best to solder

the LEDs

first,

then the other

compo-

nents

and then last

of all the

IC sockets.

Use tweezers

to hold

the parts

in place while

soldering.

The

tweezers,

aside from

making

the

components

easier

to handle in those

tight spaces,

also acts

as a heatsink,

preventing

component

damage

and

scorched

fingers

during soldering.

Make sure

you observe

the

correct

polarity when

soldering

the LEDs,

capacitors,

and

diodes!

Since

the

two switches

are

not mounted

the board.

you'll

have

to leave

them

hanging,

along with

the battery

snap,

until you

are ready

to put the

cover

of the bandit

place.

Make

the leads

long

enough so

that you

can mount

the

switches

before

you

close up. With

the

components

all sol-

dered

in place,

connect

a 9 -volt battery,

providing

some

means

of holding

it in

the box. (I

used

two squares

of double

sided

foam

tape in the

prototype.)

Mount the

two switches,

put

the ICs

their sockets,

then flip

the board

over

and install

the four

mounting

screws.

Flip

the power

switch

and

then press

S2 momentarily.

All

three

rows

of LEDs

should

roll and

then stop

sequentially.

Press

to play

again.

If there

is any problem

with

the

operation,

can likely

be traced

to one

of the following:

incorrect

polarity

component(s)

and/or

power supply

accidental

solder

bridge(s)

the circuit

board

3) missing

jumper wire(s)

faulty

IC(s).

Playing

In order

to be

winner,

you

must

end up with

the same

LED

lit in

each of the

three rows,

forming

a horizontal

row of

lights.

If you wish,

the horizontal

rows

can be marked with

different values

to indicate

different

levels of winning.

For

example:

Rows

I and

5, 3 to I payoff;

rows

2 and 4,

5 to I

payoff,

and row 3,

10 to I payoff

Even though

there's

no real

monetary

payoff, its

still

grati-

fying to know you've

beaten

the bandit

at its own game.

Try

it...You'll

it!

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