Mitsubishi Electric MUX-25TV - E1 User Manual download pdf (Page 45)

R4

6.8K.

2VV

117V

ac

-1

SO2

M0V2

ON.0

F1

NC

y

0--À

I

K1

D6

1N4001

1C

D7

1N4001

D1

D4 =

I

1N5400=

I

M 0 V

1

sol

01

R1

J1si

100

______

C2

100

NF

D8

12V'1

1W

D5

Cl

1N4001

100NF

R2

4.7K

2111

113

4.7K

2W

S7-S16

1

0-

.,

.

4 oti

0-0

-

6.

0--

ó .

12

0-

o

160-e

o

O NC

O 41

20

o-*

o

o

..-

24

0

o

o

o

28

0

0

320

o ++

O NC

0

NC

360NC

16

In p

Toggle 1

\

Out

o

.,

""'S1:2

15

o

r

13

3

o

Q 24

o

o

O

0 28

O

o

0

32

NC 0

NC

0

16

NC036

dódbbdbbbdddoobeb0d'dbóedddó

8ddddo

0oo

1 4

8

12 18

20

24

28

32

36

Compter

á

aFig. I. This

is the schematic

diagram

of the Smart Power

Switch. Turning

on /off

the device

plugged into SOI

automatically turns

on

/off

any de-

vice

plugged into

502.

of

relay KI to ground

applying

12

volts

to the

relay's coil and

closing

its

lower contacts.

With K's

contacts

closed,

ac

line

power

is applied to slave

receptacle

502.

Resistors

R2, R3 and

R4 form

one side

of the ac

line

and

in series

with rectifier diode D7 and

zener di-

ode

D8

supply

the

12

volts

dc for

K1.

(Note: These three

resistors can

be

replaced with a single

2000 -ohm,

6 -watt or

more resistor.)

Fuse FI

protects

the

circuit and

should be selected to

accommodate

the total load

expected to be drawn

by the devices plugged

into

the

mas-

ter and slave

receptacles.

Of

course,

you

must make

sure that this load

does not exceed the amount

of

power

that

can be safely

handled

by

KI's

contacts. If you wish, you

can substi-

tute

an appropriately

rated

circuit

breaker for the fuse. Finally, MO

VI

and

MO V2

are included in the

circuit

to provide spike protection for

any

devices

plugged

into

SOI and 502.

You

can assemble the Smart

Switch on

a printed- circuit board of

your own

design or a piece of

perfor-

ated board and use solder

posts

to

make the interconnections,

using

point -to -point wiring. If you install

the project in

a

metal

case, be sure to

insulate it well

to protect users from

electrical shock . Also, be sure to use

a

3- conductor

grounded

ac

line

cord

and receptacles and to properly

phase the

cord and

receptacles.

Two

-Way Printer

Switch

Here

you

have a choice of a parallel

or

a

serial

switch. The parallel

ver-

pFig. 2. Use this

wiring

diagram

to as-

semble the printer switch

for

Cen-

tronics- compatible parallel

printers.

Say

You Saw It In Modern Electronics

April 1986

/

MODERN ELECTRONICS /

51

1 2 ... 40 41 42 43 44 45 46 47 48 49 50 ... 83 84

Comments to this Manuals

No comments