question about Sirius radio car docking kit power supply

Archived from groups: rec.audio.car,rec.audio.tech (More info?)

On 7/15/2004 10:33, Dave wrote:

> Folks;
>
> Silly electronics question ....
>
> I have the JVC KT-SR1000 Sirius radio tuner, and the JVC KS-K6002 car
> docking kit. It uses a 12V DC cigarette lighter power cord. I'd like
> to use this docking kit in my home, as well, off of AC power. Can I
> use any ol' AC to 12V DC converter? All I know is that the existing
> cigarette lighter power cord contains a 3 amp fuse, and that the
> manual which came with the docking kit says to make sure that the
> power supply has a negative ground.

In the U.S., negative ground is pretty common, so you should not have
to worry about that (assuming you're in the U.S.). 12 volts is 12 volts.
However, you need to make sure that the power supply can support the
current requirements of the device. It should state this in its spec
sheet.

For example, if it draws 800ma (milliamps), then your power supply needs
to be able to support that much or you'll burn it up.

Note also that the device may be designed for use on a battery supply,
and may not tolerate the noise that can be found with some wall wart
power supplies.


>
> Thanks in advance.

Archived from groups: rec.audio.car,rec.audio.tech (More info?)

"Mark Hansen" <meh@NOSPAMunify.com> wrote in message
news:10fdkkhdpgdjg26@corp.supernews.com...
> On 7/15/2004 10:33, Dave wrote:
>
> > Folks;
> >
> > Silly electronics question ....
> >
> > I have the JVC KT-SR1000 Sirius radio tuner, and the JVC KS-K6002 car
> > docking kit. It uses a 12V DC cigarette lighter power cord. I'd like
> > to use this docking kit in my home, as well, off of AC power. Can I
> > use any ol' AC to 12V DC converter? All I know is that the existing
> > cigarette lighter power cord contains a 3 amp fuse, and that the
> > manual which came with the docking kit says to make sure that the
> > power supply has a negative ground.
>
> In the U.S., negative ground is pretty common, so you should not have
> to worry about that (assuming you're in the U.S.). 12 volts is 12 volts.
> However, you need to make sure that the power supply can support the
> current requirements of the device. It should state this in its spec
> sheet.
>
> For example, if it draws 800ma (milliamps), then your power supply needs
> to be able to support that much or you'll burn it up.
>
> Note also that the device may be designed for use on a battery supply,
> and may not tolerate the noise that can be found with some wall wart
> power supplies.
>

You'll need to be careful if the power supply you're using is unregulated
power. It may say "12V" but that is the voltage at the rated load, at no
load it could be 18+ volts. Typically I haven't had any problems using
unregulated power supplies but that doesn't mean that no one will ever have
any problems. The only other thing is to watch out for the polarity. Some
companies like to switch polarities around, apparently to piss me off..

-Bruce

Archived from groups: rec.audio.car,rec.audio.tech (More info?)

Mark Hansen <meh@NOSPAMunify.com> wrote in message news:<10fdkkhdpgdjg26@corp.supernews.com>...
> On 7/15/2004 10:33, Dave wrote:
>
> > Folks;
> >
> > Silly electronics question ....
> >
> > I have the JVC KT-SR1000 Sirius radio tuner, and the JVC KS-K6002 car
> > docking kit. It uses a 12V DC cigarette lighter power cord. I'd like
> > to use this docking kit in my home, as well, off of AC power. Can I
> > use any ol' AC to 12V DC converter? All I know is that the existing
> > cigarette lighter power cord contains a 3 amp fuse, and that the
> > manual which came with the docking kit says to make sure that the
> > power supply has a negative ground.
>
> In the U.S., negative ground is pretty common, so you should not have
> to worry about that (assuming you're in the U.S.). 12 volts is 12 volts.
> However, you need to make sure that the power supply can support the
> current requirements of the device. It should state this in its spec
> sheet.

Unfortunately I can't find the spec sheet, and JVC tech support won't
tell me, they just keep saying "you need to buy the home docking kit"
(of course).

Archived from groups: rec.audio.car,rec.audio.tech (More info?)

You may want to try a DC to AC convertor, one that plugs into a 120v
outlet and gives you a cigarette lighter receptacle. I use it to
recharge my PDA and cell phones. I'm not sure how many amps the radio
draws but the output is rated at 0.5A.

http://www.igo.com/Product_Detail.asp?PageSource=&Categ...

dc2772@yahoo.com (Dave) wrote in message news:<b84d54b2.0407170629.3d97b183@posting.google.com>...
> Mark Hansen <meh@NOSPAMunify.com> wrote in message news:<10fdkkhdpgdjg26@corp.supernews.com>...
> > On 7/15/2004 10:33, Dave wrote:
> >
> > > Folks;
> > >
> > > Silly electronics question ....
> > >
> > > I have the JVC KT-SR1000 Sirius radio tuner, and the JVC KS-K6002 car
> > > docking kit. It uses a 12V DC cigarette lighter power cord. I'd like
> > > to use this docking kit in my home, as well, off of AC power. Can I
> > > use any ol' AC to 12V DC converter? All I know is that the existing
> > > cigarette lighter power cord contains a 3 amp fuse, and that the
> > > manual which came with the docking kit says to make sure that the
> > > power supply has a negative ground.
> >
> > In the U.S., negative ground is pretty common, so you should not have
> > to worry about that (assuming you're in the U.S.). 12 volts is 12 volts.
> > However, you need to make sure that the power supply can support the
> > current requirements of the device. It should state this in its spec
> > sheet.
>
> Unfortunately I can't find the spec sheet, and JVC tech support won't
> tell me, they just keep saying "you need to buy the home docking kit"
> (of course).