Sunday, Aug 31, 2014 at 08:09
"All of those answers and none offer the correct advice to offer a solution that will definitely do what you are asking. This
forum is good for telling you answers based on poster's solutions, even if they have little to do with the original question. Doh."
That's a bit sour Boobook!! Yes - you did get trounced a bit on the other thread, but no need to let off steam here! You are one of the more highly respected members of the EO community - lets keep it that way!
We don't know enough about the original poster's requirements or his electricity supply to offer specific suggestions. Is the PC a full size one from
home? A laptop? A tablet? Is the tv a little portable? Is it cinema sized? Does he have the battery capacity to handle a big inverter anyway? (He probably isn't aware that if the proposed 1500W one is fully loaded it will draw as much current as the vehicle's starter motor!)
But we can make general recommendations like avoiding
inverters by using 12V power supplies where possible. And for sensitive gear like PCs and TVs we can recommend avoiding switchmode devices such as square wave
inverters and "modified" sine wave ones (have you seen the waveform supplied by these?)
While I have no argument with your maths, I do hope the OP doesn't gain the impression that it's ok to draw hundreds of watts, hour after hour, without considering his battery capacity and recharging capability.
Fortunately the power ratings printed on power supplies indicate their maximum capacity, and not the continuous power drain of the device they are powering. Typically, after an initial starting surge a small laptop or tv will only draw around 2 or 3 amps at 12V.
I think we've done pretty
well and I certainly wouldn't change anything I've said.
Cheers
John | J and V
"Not everything that can be counted counts, and not everything that counts can be counted."
- Albert Einstein
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