Calculate TV 12V amps w/ 115 power supply @ 27 watts - SailNet Community
 
LinkBack Thread Tools
post #1 of 2 Old 04-14-2013 Thread Starter
Commodore
 
n8kraft's Avatar
 
Join Date: Dec 2009
Location: Pier 32 Marina
Posts: 161
Thanks: 3
Thanked 1 Time in 1 Post
Rep Power: 6
 
Calculate TV 12V amps w/ 115 power supply @ 27 watts

I've got a question. On my boat I'm thinking about replacing my old non HD tv with a new HD tv. The TV in question is a Viewsonic VT2215LED 22" LED Premium HDTV Display.
On the specifications page it says the TV uses 27 Watts normally from it's 115/220 to 12V power supply. I know the formula amps = watts/volts, so amps = 27/12. If I were to hardwire the tv to my boat's 12V electrical system should I expect it to draw 2.25 DC amps?
I don't really know if that's right because the 27 Watts is listed as the draw on a 115 system, will this transfer over to 12V?

Invest in experiences, not things.
Sailing with Nate, Natalie and Sullivan at
To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
n8kraft is offline  
Quote Quick Reply Share with Facebook
Sponsored Links
Advertisement
 
post #2 of 2 Old 04-15-2013
Aspiring to be a Mexican
 
sww914's Avatar
 
Join Date: Oct 2008
Location: La Cruz de Hunacaxtle, Mexico
Posts: 542
Thanks: 0
Thanked 1 Time in 1 Post
Rep Power: 7
 
Re: Calculate TV 12V amps w/ 115 power supply @ 27 watts

Yes, you're about right and it may be even less due to the inefficiency of converting from 110 to 12v through their power supply.
IM trusting your math, i don't have a calculator on the ipad ind it's too late for long division.


To view links or images in signatures your post count must be 10 or greater. You currently have 0 posts.
sww914 is offline  
Quote Quick Reply Share with Facebook
Reply

Quick Reply
Message:
Options

By choosing to post the reply above you agree to the rules you agreed to when joining Sailnet.
Click Here to view those rules.

Register Now



In order to be able to post messages on the SailNet Community forums, you must first register.
Please enter your desired user name, your email address and other required details in the form below.
Please note: After entering 3 characters a list of Usernames already in use will appear and the list will disappear once a valid Username is entered.


User Name:
Password
Please enter a password for your user account. Note that passwords are case-sensitive.

Password:


Confirm Password:
Email Address
Please enter a valid email address for yourself.

Email Address:
OR

Log-in









Human Verification

In order to verify that you are a human and not a spam bot, please enter the answer into the following box below based on the instructions contained in the graphic.




Currently Active Users Viewing This Thread: 1 (0 members and 1 guests)
 
Thread Tools
Show Printable Version Show Printable Version
Email this Page Email this Page



Similar Threads
Thread Thread Starter Forum Replies Last Post
Iridium power supply riddon Electronics 0 01-16-2012 10:10 AM
A/C Power Supply Help Leocat66 Gear & Maintenance 7 11-15-2011 08:58 AM
Use a DC Power Supply? Tree Electrical Systems 17 08-20-2010 01:03 PM
800 watts = $160! deniseO30 Electrical Systems 27 04-22-2010 09:40 AM
How do you calculate spinnaker size needed Stillraining Gear & Maintenance 9 10-12-2008 11:34 PM

Posting Rules  
You may post new threads
You may 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 On
Trackbacks are On
Pingbacks are On
Refbacks are On

 
For the best viewing experience please update your browser to Google Chrome