Radio Shack 43-222B Manual de usuario Pagina 18
- Pagina / 21
- Tabla de contenidos
- MARCADORES
Valorado. / 5. Basado en revisión del cliente
US
8,212,386
B2
7
connector
and
may
then
attach
the
second
connector
to
the
output
connector
and
the
second
electronic
device
to
poWer
the
second
electronic
device.
Exemplary
poWer
circuits
that
can
be
used
With
the
embodiments
described
above
With
respect
to
FIGS.
1-3
are
described
in
FIGS.
4-5.
FIG.
4
shoWs
a
block
diagram
of
a
poWer
circuit
according
to
an
embodiment
of
the
invention.
The
poWer
circuit
converts
AC
poWer,
for
example
from
a
Wall
socket,
to
DC
poWer
that
may
be
used
to
poWer
a
portable
device.
As
shoWn,
there
is
one
AC
input
and
there
are
tWo
DC
outputs.
The
poWer
circuit
includes
an
AC
input
line
78,
Which
provides
an
AC
voltage
(e. g.,
100-240
VAC)
to
a
recti?er
and
an
optional
?lter
80.
The
recti?er
and
?lter
80
changes
the
AC
input
voltage
to
a
DC
output
voltage
(e. g.,
50-120
VDC).
The
DC
output
voltage
is
then
fed
to
an
inverter
82,
Which
generates
anAC
signal
(e.g.,
20
kHZ
at
50-120
VAC)
that
is
stepped
doWn
in
voltage
by
a
transformer
84
(e. g.,
20-60
VAC).
The
stepped-doWn
AC
voltage
is
then
sent
to
another
recti?er
and
optional
?lter
combination
86,
Where
the
AC
voltage
is
changed
to
a
DC
voltage
(e.g.,
25-60
VDC).
The
DC
voltage
is
then
fed
to
different
regulators
88
and
90
Which
produce
output
voltages
at
contacts
92,
94
respectively.
In
a
speci?c
embodiment
of
the
present
invention,
the
regulators
88
and
90
generate
volt
ages
of
19.5
VDC
and
16VDC,
though
in
other
embodiments,
other
voltage
may
be
provided.
Feedback
lines
96
and
98
provide
signals
back
to
the
inverter
82
to
regulate the
output
voltages.
As
explained
above,
a
?rst
connector
tip
that
is
con?gured
to
deliver
19.5
VDC
to
an
electronic
device
(such
as
a
com
puter)
may
have
contacts
that
electrically
couple
to
the
19.5
VDC
contact
and
to
a
ground
contact
(not
shoWn).
A
second
connector
tip
that
is
con?gured
to
deliver
16
VDC
to
another
type
of
electronic
device
(or different
brand
of
computer)
may
have
contacts
that
electrically
couple
to
the
16
VDC
contact
and
to
the
ground
contact.
FIG.
5
shoWs
a
DC
to
DC
poWer
supply
circuit
for
a
DC
to
DC
poWer
supply
system.
As
shoWn,
the
poWer
circuit
may
include
a
DC
input
line
96
(e.g.,
11-16
VDC)
Which
receives
a
DC
voltage
from
a
DC
source
(e.g.,
from
a car
cigarette
lighter
socket).
A
DC-DC
converter
98
receives the
DC
volt
age
from
the
DC
input
line
96,
and
this
DC
voltage
may
be
fed
to
the
appropriate
voltage
regulators
97, 99,
Which
output
the
desired
voltages
of
19.5
VDC
and
16
VDC
to
contacts
192,
194.
Feedback
lines
188,
186
send
signals
to
the
DC-DC
converter
98
to
regulate
the
voltages
provided
to
the
regula
tors
97, 98.
In
other
embodiments,
a
combination
AC
to
DC
and
DC
to
DC
converter
may
be
created
by
combining
the
poWer
circuits
shoWn
in
FIGS.
4
and
5.
One
Way
of
doing
this
Would
be
to
provide
for
a
poWer
adapter
that
includes
the
circuits
in
FIGS.
4
and
5.
Each
circuit
could
have
its
oWn
input
connector
and
its
oWn
output
connector.
Another
Way
of
creating
a
combined
AC
to
DC
and
DC
to
DC
converter
With
a
common
output
connector
Would
be
to
electrically
couple
the
19.5
VDC
con
tacts
92,
192
together
While
also
electrically
coupling
the
16
VDC
contacts
94,
194
together.
By
coupling
the
output
con
tacts
together,
a
single
output
connector
may
be
used
for
both
the
AC
to
DC
conversion
circuit
and
the
DC
to
DC
conversion
circuit.
Diodes
or
other
appropriate
electrical
elements
may
be
betWeen
the
circuits
to
prevent
current
from
one
poWer
circuit
from
passing
to
the
other
during
operation.
In
such
combination
circuits,
various
electronic
components
may
be
shared,
if
desired.
For
example, both
the
AC
to
DC
and
DC
to
DC
poWer
circuits
may
share
the
same
regulators
instead
of
having
different
regulators.
These
features
may
also
be
used
in
later
described
embodiments.
20
25
30
35
40
45
50
55
60
65
8
In
other
embodiments
of
the
invention,
a
user
may
use
a
sWitch
to
cause
a
poWer
circuit
to
output
a
desired
voltage
instead
of
having
the
poWer
circuit
output
a
plurality
of
volt
ages
simultaneously.
An
example
can be
described
With
to
FIGS.
6(a)-6(0).
FIG.
6(a)
shoWs
a
block
diagram
of
a
poWer
circuit
accord
ing
to
an
embodiment
of
the
invention.
The
poWer
circuit
converts
AC
poWer
to
DC
poWer.
The
poWer
circuit
includes
an
AC
input
line
278,
Which
provides
an
AC
voltage
(e.g.,
100-240
VAC)
to
a
recti?er
and
an
optional
?lter
280.
The
AC
input
line
278
may
receive
AC
voltage
from
an
AC
source
such
as
a
poWer
outlet
in
a
home.
The
recti?er
and
?lter
280
changes
the
AC
input
voltage
to
a
DC
output
voltage
(e.g.,
50-120
VDC).
The
DC
output
voltage
is
then
fed
to
an
inverter
282,
Which
generates
an
AC
voltage
(e.g.,
20
kHZ
at
50-120
VAC)
that
is
stepped
doWn
by
a
transformer
284
(e. g.,
20-60
VAC).
The
stepped-doWn
AC
voltage
is
then
sent
to
another
recti?er
and
optional
?lter
combination
286,
Where
the
AC
voltage
is
converted
to
a
DC
voltage
(e.g.,
25-60
VDC).
The
DC
voltage
is
then
fed
to
a
variable
regulator
210
Which
produces
output
voltages
at
contacts
292,
294
respectively,
depending
on
the
state
of
the
sWitch
218.
A
speci?c
embodi
ment
of
the
present
invention
provides
output
voltages
of
19.5
VDC
and
16
VDC,
though
in
other
embodiments
other
volt
ages
may
be
provided.
A
feedback
line
216
provides
a
signal
back
to
the
inverter
282
to
regulate
the
output
voltages.
In
this
example,
When
anAC
signal
is
input
to line
278,
an
output
voltage
of
16
VDC
is
provided
at
a
?rst
contact
292
When
the
sWitch
218
is
open.
The
open
state
of
the
sWitch
218
sends
a
signal
to
the
variable
regulator
210
to
cause
the
variable
regulator
210
to
output
a
voltage
of
16
VDC
to
only
the
?rst
contact
292,
Without
outputting
a
voltage
of
19.5
VDC
to
the
second
contact
294.
As
shoWn
in
FIG.
6(b),
a
?rst
connector
220
may
have
a
body
portion
220(0)
and
a
mating
portion
220(b).
The
body
portion
220(a)
may
have
tWo
contacts
220(0),
Which
are
con?gured
to
mate
or
connect
to
the
?rst
and
third
contacts
292,
295
in
the
output
connector
299.
The
tWo
contacts
220(0)
and/or
the
mechanical
con?guration
of
the
body
portion
220
(a)
may
be
such
that
the contacts
220(0)
cannot
couple
to
the
second
contact
294
in
the
output
connector
299.
Also
in
this
example,
When
an
AC
signal
is
input
to
line
278,
an
output
voltage
of
19
VDC
is
provided
at
a
second
contact
294
When
the
sWitch
218
is
closed.
The
closed
state
of
the
sWitch
218
sends
a
signal
to
the
variable
regulator
210
to
cause
the
variable
regulator
21
0
to
output
a
voltage
of
19
VDC
to
only
the
second
contact
294,
Without
outputting
a
voltage
of
16
VDC
to
the
?rst
contact
292.
As
shoWn
in
FIG.
6(0),
a
second
connector
222
may
have
a
body
portion
222(0)
and
a
mating
portion
222(1)).
The
body
portion
222(a)
may
have
tWo
contacts
222(0),
Which
are
con?gured
to
mate
or
connect
to
the
second
and
third
contacts
294,
295
in
the
output
connector
299.
The
tWo
contacts
222(0)
and/or
the
mechanical
con?guration
of
the
body
portion
222
(a)
may
be
such
that
the contacts
222(0)
cannot
couple
to
the
?rst
contact
292
in
the
output
connector.
To
assist
the
user
in
selecting
the
correct
connector,
con
nector
indicators
such
as
numbers,
colors,
letters,
etc.,
could
be
placed
on
the
connectors
220,
222 and
proximate
the
on
and
off
positions
of
the
sWitch
218
so
that
the
indicators
indicate
to
the
user
Which
connector
corresponds
to
Which
sWitch
position.
For
example,
the
“off
position”
of
the
sWitch
218
may
be
associated
With
a
blue
label
and
the
?rst
connector
220
may
have
a
corresponding
blue
label.
The
“on
position”
of
the
sWitch
218
may
be
associated
With
a
green
label
and
the
second
connector
222
may
have
a
corresponding
green
label.
A
chart
or
other
information
medium
may
be
used
to
inform
- (Continued) 1
- 2152212212 2
- 1242218282281 2
- 4
- Converter 8
- 299 2?2 9
- MJEXTERNAL 10
- AXTERNAL 11
- 8,212,386 15
© 2020, manymanuals.es. Todos los derechos reservados | 0.162 s |
Manymanuals.com
Manymanuals.de
Manymanuals.fr
Manymanuals.it
Manymanuals.pl
Manymanuals.cz
Manymanuals.es
Manymanuals-pt.com
Comentarios a estos manuales