I have an MP3 player that requires 5VDC. I'd like to use this on my
boat and adapt it to my 12VDC system. Any suggestions?

Floating Mind wrote:
I have an MP3 player that requires 5VDC. I'd like to use this on my
boat and adapt it to my 12VDC system. Any suggestions?


You'll want to use a DC-DC converter. I imagine
they're available wherever electronic appliances
are sold.

Here's one online:

http://www.unbeatablesale.com/oci112...C-DC+converter
JWIN JAD602 Regulated DC-DC converter

Chuck

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"chuck" wrote in message
...
Floating Mind wrote:
I have an MP3 player that requires 5VDC. I'd like to use this on my
boat and adapt it to my 12VDC system. Any suggestions?


You'll want to use a DC-DC converter. I imagine they're available wherever
electronic appliances are sold.

Here's one online:

http://www.unbeatablesale.com/oci112...C-DC+converter
JWIN JAD602 Regulated DC-DC converter

Chuck


Or buy a 150 watt inverter and plug the MP3 player brick into that.

Thanks for the tips! I think I'm going to go with Larry's suggestion
and build the one he posted. The 110V adapter that came with the unit
states that it has a 2.4 amp output, but I'm sure that's only required
during charging. Whenever I use this player on the boat it will already
be charged. I'm still going to add the heat sink right off the bat
though.

I want to stay away from using an inverter, and the only DC to DC
adapters I could find pre-made didn't have a 5V position, but thanks for
all of your suggestions anyway.

(Floating Mind) wrote in news:19445-4492F1B5-514
@storefull-3115.bay.webtv.net:

Thanks for the tips! I think I'm going to go with Larry's suggestion
and build the one he posted. The 110V adapter that came with the unit
states that it has a 2.4 amp output, but I'm sure that's only required
during charging.

Ok, so let's use a bigger regulator...(c;

http://www.linear.com/pc/downloadDocument.do?
navId=H0,C1,C1003,C1042,C1033,P1005,D4236

oops, sorry for wordwrap. This IC regulator won't even get warm at 5A
load....it's a SWITCHER, which is what I always prefer...(c;

Build this one and have 5V power to burn...er, ah, charge...(c;

Larry wrote:
[snip]
Go by any electronics store and get a 7805 IC regulator. Here's the
simplest of power supplies:

http://www.tkk.fi/Misc/Electronics/circuits/psu_5v.html

love the 7805, buy them in bulk

Use a 78st105 from Texas instruments.

96% efficient at 1.5 amps.

They also do a 3 amp part.

http://focus.ti.com/lit/an/slta010a/slta010a.pdf for an application
note.

a couple of external caps and you are away.

PS I have a tube full of them if you are just looking for one or two!

Ian

Larry wrote:
(Floating Mind) wrote in news:19445-4492F1B5-514
@storefull-3115.bay.webtv.net:

Thanks for the tips! I think I'm going to go with Larry's suggestion
and build the one he posted. The 110V adapter that came with the unit
states that it has a 2.4 amp output, but I'm sure that's only required
during charging.

Ok, so let's use a bigger regulator...(c;

http://www.linear.com/pc/downloadDocument.do?
navId=H0,C1,C1003,C1042,C1033,P1005,D4236

oops, sorry for wordwrap. This IC regulator won't even get warm at 5A
load....it's a SWITCHER, which is what I always prefer...(c;

Build this one and have 5V power to burn...er, ah, charge...(c;