Modified sine Wave VS Pure Sine Wave Inverters.

Posted by Paul Smith on August 16, 2009, 01:17:39 PM

Modified sine Wave VS Pure Sine Wave Inverters.
I'm putting together an alarm system for my remote off-grid cabin and have found that I need a Pure Sine wave inverter to run the main console (adapter gets very hot very quickly on a MSW inverter)My total power requirements are quite low, well under 50 watts,and weeks might go by without anyone at the cabin.Along with a price difference. it appears the PSW inverters use more power in standby, comments? The smallest PSW inverter I have found is 150 watts, any one know of anything smaller? Thanks
 

Posted by Jon C on August 16, 2009, 04:10:51 PM

Re: Modified sine Wave VS Pure Sine Wave Inverters. (Reply #1)
Hi Paul S.  Just a thought here........I am using a Trace inverter which is not small, but it has a "SLT" mode of operation.  In Silent mode, it essentially shuts down and waits for load to appear.  When a load is present, it turns on and produces normal power output again.  This gives it low power consumption in a standby mode of operation.  Perhaps there are other inverters that have this optional operating mode?  Good hunting :-)  Jon C.
 

Posted by John D on August 19, 2009, 10:54:59 AM

Re: Modified sine Wave VS Pure Sine Wave Inverters. (Reply #2)
Exeltech makes a 125-watt sine wave inverter.  I've had good luck with my 1100-watt Exeltech Inverter.  John
 

Posted by Paul Smith on August 19, 2009, 03:53:42 PM

Re: Modified sine Wave VS Pure Sine Wave Inverters. (Reply #3)
Would that be their XP series? I see they have an XP 125, only uses 5 watts in standby.
 

Posted by David Ames on August 20, 2009, 11:34:56 AM

Re: Modified sine Wave VS Pure Sine Wave Inverters. (Reply #4)

 hi paul,

 my apologies for jumping off the inverter topic.

 in your OP you mentioned "adapter gets very hot very quickly on a MSW inverter"..it is likely that this adapter is powering an internal battery pack to run the alarm system. we may be able to run that system directly from your battery bank?

 these "adapters" usually have the input/output voltages printed on them somewhere. there may even be some info about dc only operations in the manual/website somewhere.

just a few thoughts.
kind regards, dave
 
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