Cruisers Forum
 


Join CruisersForum Today

Reply
 
Thread Tools Rate Thread Display Modes
Old 15-01-2012, 18:18   #1
Registered User
 
Patrick_DeepPlaya's Avatar

Join Date: Feb 2008
Location: Seattle, WA
Posts: 262
Improving Quality of DC Power to Electronics

I have a 12vdc pc which has a wide range input but sometimes I get blue screens which I believe are related to voltage drops like when I use the windlass off the same battery bank and am running a bit low on that bank. I also am going to bringing aboard some additional ham radios and want to add a flexible power distribution.

The power distribution is pretty easy, something like a rig runner which basically allows you to have a series of Anderson pole based plugins available, each fused, I'd run them off a breaker.
http://www.westmountainradio.com/RIGrunner.htm

In addition to that I'd like to have this part of my dc power be supported in someway against voltage drops, and to provide a more consistent voltage to these sensitive electronics.

Should I be putting a converter in front of this, or is there some other device which will condition the power and help with drops.

I'm not really sure what options I have and where to look next, so any suggestions are greatly appreciated!

Thanks!
-p
__________________

__________________
http://www.DeepPlaya.com | Twitter: @DeepPlaya
Patrick_DeepPlaya is offline   Reply With Quote
Old 15-01-2012, 20:10   #2
Registered User

Join Date: Sep 2010
Posts: 793
Re: Improving quality of DC power to electronics

Maybe something like this

Magic 12/12-20 | Mastervolt Marine
__________________

__________________
twistedtree is offline   Reply With Quote
Old 15-01-2012, 21:48   #3
֍֎֍֎֍֎֍֎֍֎

Cruisers Forum Supporter

Join Date: Apr 2006
Posts: 13,022
Re: Improving quality of DC power to electronics

Looks like a DC-DC converter, aka dc booster or buck booster. There are a couple on the market from various makers. Your ham radios will probably also appreciat ethem as they can ensure that you get `13.6v to the radios all the time, as many radios don't really like "12" volts.

Then there's also the question of why you'd be letting your battery bank get low. And it might pay to put a dedicated battery forward for the winch, so it isn't getting voltage drops from a remote battery bank.
__________________
hellosailor is offline   Reply With Quote
Old 16-01-2012, 00:15   #4
Registered User
 
Viking Sailor's Avatar

Join Date: Nov 2006
Location: San Francisco Bay
Boat: Fantasia 35 - s/v Feeling Good
Posts: 1,074
Re: Improving quality of DC power to electronics

IIRC Bill (btrayfors) has one installed on his boat. You might want to check with him about it's usefulness. I think he wired it with a by-pass switch in case it failed. Also, some of these devices have been known to generate RFI.



__________________
Viking Sailor is offline   Reply With Quote
Old 16-01-2012, 01:39   #5
Registered User

Join Date: Nov 2007
Location: Probably in an anchorage or a boatyard..
Boat: Ebbtide 33' steel cutter
Posts: 3,537
Re: Improving quality of DC power to electronics

Haven't really ran it in anger yet but i used one of these..

Car PC DC-DC 160W 8V-28V Mini-ITX M2 ATX Power PSU 12V | eBay

Seems very good so far.

And RF quiet, so downloading weatherfaxes is fine.
__________________
conachair is offline   Reply With Quote
Old 16-01-2012, 03:22   #6
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Re: Improving quality of DC power to electronics

Quote:
Originally Posted by conachair View Post
Haven't really ran it in anger yet but i used one of these..

Car PC DC-DC 160W 8V-28V Mini-ITX M2 ATX Power PSU 12V | eBay

Seems very good so far.

And RF quiet, so downloading weatherfaxes is fine.
this will be no good unless you have 24v power. you need a DC DC convertor that capable of Buck & Boost, ie step up as well as step down. Good output capacitors will help too. PCs now use multiphase DC switched mode ( upto 8 phases) to improve response time etc.

Dave
__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 16-01-2012, 03:41   #7
Registered User

Join Date: Nov 2007
Location: Probably in an anchorage or a boatyard..
Boat: Ebbtide 33' steel cutter
Posts: 3,537
Re: Improving quality of DC power to electronics

Quote:
Originally Posted by goboatingnow View Post
this will be no good unless you have 24v power. you need a DC DC convertor that capable of Buck & Boost, ie step up as well as step down. Good output capacitors will help too. PCs now use multiphase DC switched mode ( upto 8 phases) to improve response time etc.

Dave
Haven't tested this to confirm but check the spec:

Minimum Input Operating. voltage
8V
Maximum input Operating voltage
28V (clamping will occur at 25-27V)
Deep-Discharge shutdown threshold
11.2V

From memory the deep discharge shutdown is a selectable option with some jumpers. The guy who recomended this route said he's never had any problems with shutdown when engine starting causes voltage drop.
Again, I haven't tested any of this, would be interesting to put it on a bench supply to see what happens for real. Mine's a mini itx so was a bit of a squeeze getting it in there. Works fine though, and very RF quiet. Though my computer draws less than 1a


Paddy
__________________
conachair is offline   Reply With Quote
Old 16-01-2012, 03:51   #8
Nearly an old salt
 
goboatingnow's Avatar

Cruisers Forum Supporter

Join Date: Jun 2009
Posts: 13,649
Images: 3
Re: Improving quality of DC power to electronics

Quote:
Originally Posted by conachair View Post
Haven't tested this to confirm but check the spec:

Minimum Input Operating. voltage
8V
Maximum input Operating voltage
28V (clamping will occur at 25-27V)
Deep-Discharge shutdown threshold
11.2V

From memory the deep discharge shutdown is a selectable option with some jumpers. The guy who recomended this route said he's never had any problems with shutdown when engine starting causes voltage drop.
Again, I haven't tested any of this, would be interesting to put it on a bench supply to see what happens for real. Mine's a mini itx so was a bit of a squeeze getting it in there. Works fine though, and very RF quiet. Though my computer draws less than 1a


Paddy


based on those specs it should be OK, Im just remembering, I think I have one of those somewhere in the gadget box ( well now more of a gadget garage according to my wife)
__________________
Check out my new blog on smart boat technology, networking and gadgets for the connected sailor! - http://smartboats.tumblr.com
goboatingnow is offline   Reply With Quote
Old 16-01-2012, 05:32   #9
Registered User

Join Date: Jun 2010
Posts: 10
Re: Improving quality of DC power to electronics

Your Dc Pc already has a Dc to Dc converter built into it, I think the lower voltage is 10v. You are describing a voltage drop when starting a motor load, So the voltage prob, is dropping out of perimeter on motor startup.

Your question is how to improve quality, So I assume you are not looking for a quicky fix, And you intend to add more electronics/load.

My advise add battery's, Some/more Solar panels would be nice too,,

In "Scottys" words We dun ave enough power Captain!
__________________
BlueH20 is offline   Reply With Quote
Old 19-01-2012, 19:58   #10
Registered User
 
Patrick_DeepPlaya's Avatar

Join Date: Feb 2008
Location: Seattle, WA
Posts: 262
Thanks for the replies everyone!

I do think a dc-dc converter or a dc booster ( has many brand names ) seems to be the way to go, seems like this is what a lot of hams use in their field day setups and home emergency setup configurations.

Just have to get one to the boat now!

-patrick
XE2/w7pea/mm
Chacala, Nayarit Mexico
__________________

__________________
http://www.DeepPlaya.com | Twitter: @DeepPlaya
Patrick_DeepPlaya is offline   Reply With Quote
Reply

Tags
electronics

Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off


Similar Threads
Thread Thread Starter Forum Replies Last Post
DC Generator - The Smart Way to Go typhoon Electrical: Batteries, Generators & Solar 96 22-03-2014 09:50
Proper Grounding for AC and DC davisr Electrical: Batteries, Generators & Solar 71 02-02-2012 10:28
OpenGL for OpenCPN bdbcat OpenCPN 72 15-11-2011 01:17



Copyright 2002- Social Knowledge, LLC All Rights Reserved.

All times are GMT -7. The time now is 19:50.


Google+
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.
Social Knowledge Networks
Powered by vBulletin® Version 3.8.8 Beta 1
Copyright ©2000 - 2017, vBulletin Solutions, Inc.

ShowCase vBulletin Plugins by Drive Thru Online, Inc.