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DC power inverters are confusing

Posted on 7/7/16 at 11:26 am
Posted by Broke
AKA Buttercup
Member since Sep 2006
65045 posts
Posted on 7/7/16 at 11:26 am
What's the difference between the cheap $15 one and then $120 brick looking models? I don't get it.
Posted by seawolf06
NH
Member since Oct 2007
8159 posts
Posted on 7/7/16 at 11:45 am to
Are you comparing similar wattage output? My first guess would be safety and reliability.
Posted by mdomingue
Lafayette, LA
Member since Nov 2010
30310 posts
Posted on 7/7/16 at 11:46 am to
IT can be several things but usually power capacity Wave form, and frequency/voltage stability.

For most non critical, low power applications, the $15 ones are fine
Posted by Macfly
BR & DS
Member since Jan 2016
8081 posts
Posted on 7/7/16 at 11:47 am to
I think cost would impact the wattage or capacity to power a specific item. A low cost inverter would not have the capability to power a laptop, whereas, a higher cost one could, as an example.
This post was edited on 7/7/16 at 11:48 am
Posted by Broke
AKA Buttercup
Member since Sep 2006
65045 posts
Posted on 7/7/16 at 12:10 pm to
Ok now I get it. If I want to power my 15 watt guitar amp I need at least a 15 watt inverter?
Posted by BAMBAM
Biloxi, MS
Member since Mar 2008
2364 posts
Posted on 7/7/16 at 12:20 pm to
The cheaper ones are a different type of sine wave - basically the power is cleaner from the more expensive ones so if you have to run sensitive electronics.

Look it up on Wikipedia for a technical explanation

Cheaper ones work for simple things but if it's a radio it will probably buzz
Posted by BAMBAM
Biloxi, MS
Member since Mar 2008
2364 posts
Posted on 7/7/16 at 12:20 pm to
This and the wattages are important
Posted by DrSteveBrule
Baton Rouge
Member since Sep 2009
12008 posts
Posted on 7/7/16 at 10:12 pm to
Make sure you buy one that is UL listed.
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