Radio Shack 43-222B Manual de usuario descargar pdf (Pagina 20)

US

8,212,386

B2

11

The

embodiments

described

With

respect

to

FIG.

7(a)

spe

ci?cally

relate

to

a

AC

to

DC

power

supply

system.

It

is

understood

that

the

same

general

principles

may

apply

to

a

DC

to

DC

poWer

supply

system

(as

described

above

With

respect

to

FIG.

5)

and

a

combinationAC

to

DC

and

DC

to

DC

poWer

supply

system

(as

described

above).

For

example,

referring

to

FIG.

7(d),

a

DC

to

DC

circuit

may

comprise

a

DC

to

DC

converter

240

and

a

variable

regulator

242

coupled

to

the

DC

to

DC

converter

240.

An

output

connector

255

may

be

coupled

to

the

variable

regulator

242.

The

illustrated

compo

nents

in

the

connector

255

are

described

above

With

respect

to

FIG.

7(a),

and

the

descriptions

of

those

components

need

not

be

repeated

here.

An

external

sWitch

318

may

be

coupled

to

the

variable

regulator

242

to

adjust

the

voltage

output

by

the

variable

regulator

242.A

feedback

loop

244

may

send

a

signal

back

to

the

DC

to

DC

converter

240

to

regulate the

voltage

output

by

the

DC

to

DC

converter

240.

FIG.

8(a)

shoWs

a

perspective

vieW

of

an

adapter

400

according

to

an

embodiment

of

the

invention.

The

adapter

400

comprises

a

USB

port

402,

as

Well

as

a

Wall

input

cable

port

404 and

an

auto/air

input

cable

port

406.

A

cable

410

is

also

coupled

to

the

adapter

400.

FIG.

8(b)

shoWs

the

underside

of

the

poWer

adapter

400

shoWn

in

FIG.

8(b).

A

color

coded

selector

408 and

a

color

coded

selector

button

410

are

shoWn.

As

shoWn

in

FIG.

8(c),

to

set

up

the

adapter

400,

the

user

may

use

a

pen 412

to

press the

selector

button

412

and

at

the

same

time

may

slide

the

color-coded

selector

button

410

to

match

the

color

code

for

the

user’

s

computer.

By

using

the

pen

412 and

selector

button

412,

the

user

Will

not

inadvertently

select

the

incorrect

voltage

by

inadvertent

movement

of

the

color-coded

selector

button

410.

The

user

may

then

try

various

connectors

(Which

may

be

in

the

form

of

connector

tips)

and

may

connect

them

to

the

output

connector

coupled

to

the

adapter

400 and

to

the

user’

s

computer.

As

noted

above,

the

selected

connector

may

be

color

coded

“blue”

and

the

output

connector

may

have

an

LED

that

gloWs

“blue”

so

that

the

user

can

easily

verify

that

the

correct

voltage

Will

be

supplied

to

his

computer.

FIG.

9

shoWs

an

output

connector

466

and

a

computer

460

With

a

poWer

port

462

.

A

connectable

connector

464

is

remov

ably

connectable

to

both

the

output

connector

466 and

the

poWer

port

462.

FIG.

10

shoWs tWo

connectable

connectors

464(a),

464(b)

coupleable

to

an

output

connector

466.

The

output

connector

466

also

comprises

band

470

Which

can

provide

light

from

the

previously

described

blue

and

green

LEDs.

The

connectors

464(a),

464(b)

may

have

blue

and

green

indicators

488(a),

488(b),

respectively,

so

that

the

user

knoWs

Which

connector

to

use.

As

explained

above,

When

the

band

470

gloWs

green,

the

user

can

use

the

connector

With

the

green

indicator.

When

the

band

470

gloWs

blue,

the

user

can

select

the

connector

With

the

blue

indicator.

By

using

matching

colors,

it

is

unlikely

that

the

user

Will

use

the

incorrect

connector

and

output

the

incorrect

voltage.

Thus,

as

illustrated

above,

embodiments

of

the

invention

may

be

include

manipulating

a

sWitch

in

a

poWer

circuit

to

a

?rst

state

to

generate

a

?rst

output

voltage,

Where

the

poWer

circuit

is

capable

of

generating

a

second

output

voltage

When

the

sWitch

is

in

a

second

state.

An

output

connector

is

coupled

to

the

poWer

circuit

and

outputs

the

?rst

output

voltage

using

at

least

a

?rst

electrical

contact

and

a

second

electrical

con

tact.

The

consumer

can

then

vieW

an

output

(e.g.,

a

visual

output)

from

a

voltage

output

indicator

device

coupled

to

the

?rst

and

second

electrical

contacts.

The

output

indicates

that

the

poWer

circuit

is

producing

the

?rst

output

voltage.

The

user

can

then

select

a

?rst

connector

comprising

an

indicator

20

25

30

35

40

45

50

55

60

65

12

Which

matches

the

output

from

the

voltage

indicator

device,

and

then

attach

the

?rst

connector

to

the

output

connector.

The

above-described

embodiments

may

be

formed

using

any

suitable

methods.

For

example,

in

some

embodiments,

a

poWer

circuit

comprising

a

sWitch

is

formed

using

conven

tional

poWer

supply

manufacturing

processes.

The

poWer

circuit

is

adapted

to

generate

a

?rst

output

voltage

and

a

second

output

voltage,

depending

on

the

state

of

the

sWitch.

An

output

connector

can be

attached

to

the

poWer

circuit.

The

output

connector

includes

a

plurality

of

electrical

contacts

including

a

?rst

electrical

contact

and

a

second

electrical

contact.

A

voltage

output

indicator

device

is

attached

to

the

?rst

and

second

electrical

contacts.

The

voltage

output

indi

cates

that

the

poWer

circuit

is

producing

the

?rst

output

volt

age

or

the

second

output

voltage.

Embodiments

of

the

invention

have

a

number

of

advan

tages.

As

noted

above,

no

feedback

signal

is

sent

from

the

connectors

to

the

poWer

supply

circuit.

Accordingly,

the

poWer

circuit

need

not

have

a

programmed

lC

chip

that

is

adapted

to

change

the

output

voltage

in

response

to

the

con

nector

tip

that

is

used.

Omitting

such

programmed

chips

reduces

the

cost

of

the

poWer

supply

systems.

In

addition,

since

a

single

connector

tip

or

connector

can

be

used

With

many

different

notebook

computers

in

embodiments

of

the

invention,

feWer

connector

tips

or

connectors

are

needed

in

embodiments

of

the

invention,

thus

simplifying

the

system

as

compared

to

conventional

universal

poWer

supply

systems.

Although

speci?c

circuit

implementations

are

shoWn

in

the

foregoing

Figures,

it

is

understood

that

any

suitable

circuit

implementation

may

be

used

to

accomplish

the

end

result

of

providing

at

least

tWo

conductive

contacts

in

an

output

con

nector

that

can

be

used

to

provide

different

voltages

to

poWer

different

electronic

devices.

Although

much

of

the

description

above

refers

to

tWo

con

nector

tips

and

three

electrical

contacts

in

an

output

connec

tor,

embodiments

of

the

invention

may

include

any

number

of

connector

tips,

or

connectors,

and

any

number

of

electrical

contacts

in

an

output

connector.

For

example,

a

poWer

supply

system

according

to

an

embodiment

of

the

invention

may

have

an

output

connector

that

may

be

con?gured

to

interface

or

mate

With

three,

four,

?ve,

six,

or

more

connector

tips

or

connectors.

The

above

description

is

illustrative

and

is

not

restrictive.

Many

variations

of

the

invention

Will

become

apparent

to

those

skilled

in

the

art

upon

revieW

of

the

disclosure.

The

scope

of

the

invention

should,

therefore,

be

determined

not

With

reference

to

the

above

description,

but

instead

should

be

determined

With

reference

to

the

pending

claims

along

With

their

full

scope

or

equivalents.

One

or

more

features

from

any

embodiment

may

be

com

bined

With

one

or

more

features

of

any

other

embodiment

Without

departing

from

the

scope

of

the

invention.

A

recitation

of

“a”,

“an”

or

“the”

is

intended

to

mean

“one

or

more”

unless

speci?cally

indicated

to

the

contrary.

In

addi

tion,

Words

such

as

“over”,

“under”,

etc.

are

used

to

described

features as

they

are

shoWn

in

the

Figures

and

may

or

may

not

refer

to

absolute

positions.

All

patents,

patent

applications,

publications,

and

descrip

tions

mentioned

above

are

herein

incorporated

by

reference

in

their

entirety

for

all

purposes.

None

is

admitted

to

be

prior

art.

What

is

claimed

is:

1.

A

poWer

supply

system

con?gured

to

poWer

a

plurality

of

portable

electronic

devices,

the

poWer

supply

system

com

prising:

a

poWer

circuit

adapted

to

generate

a

?rst

output

voltage

and

a

second

output

voltage

at

the

same

time;

and

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