INVERTER, have aquired a new laptop so considering an inverter

Submitted: Tuesday, Jun 30, 2009 at 17:52
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I have done a search in Threads and nothing comes up. Search elsewhere does provide some info. Will use it for the laptop, may some other things, any advice would be appreciated. Brands, installation etc..

We have a 2004 TD100 LC.

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Russ


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Reply By: Tenpounder (SA) - Tuesday, Jun 30, 2009 at 18:02

Tuesday, Jun 30, 2009 at 18:02
I tried search on 'inverter' and selected 'forum' and 'articles', and came up with 1530 matches, so I can't work out why 'nothing comes up'. I have read various forum comments on this important topic, and can appreciate that you don't want to make the wrong choice. Most people seem to say don't buy anything other than a true sine wave inverter (and NOT a square wave or modified sine wave inverter. But some on the site have also had no probs with a 240v power supply plugged into a modified sine wave inverter (depends on inverter, also on the power supply unit in question.
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Follow Up By: Member - Prickle (SA) - Tuesday, Jun 30, 2009 at 20:20

Tuesday, Jun 30, 2009 at 20:20
Thanks, I did not select forum, so may be that is where I slipped up. Must admit I was a bit surprised when nothing came up.
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Reply By: tim_c - Tuesday, Jun 30, 2009 at 18:21

Tuesday, Jun 30, 2009 at 18:21
I run my laptop off a cheapie inverter (not sure if it's square wave or modified sine wave) and haven't had any problems. After I'd run it a few times, I read that 'delicate' equipment (eg. laptops) should be run only from a pure sine wave inverter.

I only have a small unit (150w) which I use for battery chargers, MP3 charger & laptop so I didn't bother to install it - it's packed away until I need it (like most things!) and it just sits on passenger side on the dashmat or footwell while in use.
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Follow Up By: Member - Prickle (SA) - Tuesday, Jun 30, 2009 at 20:23

Tuesday, Jun 30, 2009 at 20:23
Thanks
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Reply By: MrBitchi (QLD) - Tuesday, Jun 30, 2009 at 18:30

Tuesday, Jun 30, 2009 at 18:30
I run mine off a 12v/19v adapter. Can't see the point in wasting all that power going to 240v and back.
Got my unit from Jaycar.

12v/19v Notebook power supply
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Follow Up By: tim_c - Tuesday, Jun 30, 2009 at 18:35

Tuesday, Jun 30, 2009 at 18:35
I got an inverter because I couldn't see the point of buying dozens of 12v adaptors for things I had 240v adaptors for... MP3 player, laptop, NiMH battery charger, camera charger, handheld CB charger, etc.
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Follow Up By: Member - Graham H (QLD) - Tuesday, Jun 30, 2009 at 20:00

Tuesday, Jun 30, 2009 at 20:00
The safety angle SHOULD be considered.

Having 240 volts in a car interior is asking for trouble in more ways than one.
Eg Spill a drink on it Will light up your life( or whats left of it ) rather dramatically.
Have it mounted too low and get water from a creek crossing. Same result.

Have an accident and still have that voltage floating somewhere and an Ambo grabs it. How would you feel Honestly???????
Then you are trapped and bleeding slowly to death because they cant stop the voltage easily if you cant tell them whats causing it

Think about it

By a Converter and keep the voltage low and reasonably safe.
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Follow Up By: Bob of KAOS - Tuesday, Jun 30, 2009 at 20:03

Tuesday, Jun 30, 2009 at 20:03
Tim

You can get a variable voltage DC to DC converter to run all of those things:
a more elegant solution than inverter plus a bag full of 240V adaptors - lighter, cheaper and more energy efficient.
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Follow Up By: tim_c - Wednesday, Jul 01, 2009 at 12:42

Wednesday, Jul 01, 2009 at 12:42
Good food for thought, Graham. However, I don't think we'll be likely to spill something on it as we don't eat/drink on the go (we always stop and eat outside). The inverter is packed away (& disconnected) until I need it (like most things!) and it just sits on passenger side on the dashmat or footwell while in use. In an accident, I'd be most worried about it flying around the cabin, at which time I'm almost certain the plug would end up being pulled from the ciggie socket (it has a very short lead). Failing that, it's certainly not 'concealed' when in use.

Bob, a DC to DC converter would be more efficient but I've not yet seen one supplies more than a few hundred mA or has all the required connectors. Besides, my Creative MP3 player only accepts charge from genuine Creative chargers (eg. the 240v one that come with it). Yes, I can buy the genuine 12v charger for $60-70, then I can buy a 12v adaptor for other things, etc. and it quickly adds up to more than I paid for one small inverter to do the lot...
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Follow Up By: Member - joc45 (WA) - Wednesday, Jul 01, 2009 at 23:32

Wednesday, Jul 01, 2009 at 23:32
Altronics have a 6A DC-DC converter for lappies for $40 at present.
Comes with a whole range of adaptors.
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Reply By: Serendipity of Mandurah (WA) - Tuesday, Jun 30, 2009 at 19:05

Tuesday, Jun 30, 2009 at 19:05
Hi Prickle

I purchased a 300w nom (600w peak) pure sine wave inverter new from eBay - and it was cheap ($80). Well it is what was advertised but I wanted it to recharge my cordless tools. It won't run the 140w battery charger. What I have found is the 600w peak is probably too short to allow the battery charger to start up the charging cycle and the inverter just trips out with overload light.

It still runs the smaller equipment like laptops and other smaller chargers. My advice is be prepared to pay the good money to get the decent product.

David

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Follow Up By: Member - Prickle (SA) - Tuesday, Jun 30, 2009 at 20:27

Tuesday, Jun 30, 2009 at 20:27
Thanks David.
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Reply By: Member - Bytemrk(VIC) - Tuesday, Jun 30, 2009 at 20:58

Tuesday, Jun 30, 2009 at 20:58
G'day Prickle,

If your primary use is for the laptop, I would look at what other power options you have rather then going to an inverter.

Not sure what brand laptop - but some do offer suitable power supplies.

I have a Dell Precision and I purchased an auto/aircraft power supply with it - simple.. power supply just like the one you use at home.. except it also has a 12V cigarette light type plug as well..

As said.. seems silly to go from 12V to 240 then back to 19V or what ever yours is.

Just a thought....

Mark
AnswerID: 372527

Follow Up By: Member - Prickle (SA) - Wednesday, Jul 01, 2009 at 16:56

Wednesday, Jul 01, 2009 at 16:56
Thanks Mark, will think about what else I can/will run off it.
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Reply By: Member - Tony F (NSW) - Tuesday, Jun 30, 2009 at 22:38

Tuesday, Jun 30, 2009 at 22:38
Buy a Pure Sine and be confident you have the right item. Ask yourself, would you let somebody else hook up their expensive and full of soft ware computer,
to your inverter if it was a modified. If it was your son or daughter doing their final year assignments at uni, hook up to it with confidence. The extra cost is only the difference and not the total. Why worry, buy the best, you will have it for a very long time. I did, and it came from Jaycar. They are even cheaper now.
I bought a 300.
Cheers Tony F
AnswerID: 372547

Follow Up By: Member - Graham H (QLD) - Tuesday, Jun 30, 2009 at 22:57

Tuesday, Jun 30, 2009 at 22:57
The cheapest pure sine wave inverter from Jaycar at the moment is a 180 and it is $219 or $249 for a 380.
Considerably more than a Projecta converter which for $69 for a 6 amp on will do the job much better.

I also use one of the optional ends and have a car battery charger for my camera and it does the job very well and much safer.

Incidentally a modified sine wave is usually quite safe on a laptop.

In fact the Jaycar catalogue recommends them for computers (most)

Quite honestly I dont consider some of the Jaycar stuff to be "Top of the range"anyway.





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Follow Up By: Member - Prickle (SA) - Wednesday, Jul 01, 2009 at 17:05

Wednesday, Jul 01, 2009 at 17:05
Thanks for the input.
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Reply By: Member - Tony F (NSW) - Tuesday, Jun 30, 2009 at 22:51

Tuesday, Jun 30, 2009 at 22:51
Sorry I forgot. Istalation. I have my extra battery fitted behind my fridge. it is removable to use in the camp if needed. I have an extra Anderson plug on it. My inverter is mounted on the side of my draws, out of the way for protection. it plugs into it. The other great thing about an inverter is to use those low draw fluro globes that are supposed to be used in everybody's houses. Hardly any energy draw equals a heap of light through an old bed side lamp.
The other thing about a pure sine inverter is how much did your computer cost. Do you think you would get any waranty out of a modified conection. I doubt it.

Cheers Tony F
AnswerID: 372550

Reply By: Member - Doug T (NT) - Tuesday, Jun 30, 2009 at 23:09

Tuesday, Jun 30, 2009 at 23:09
I see ABR has a good size at a good price

1000W Inverter

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Reply By: Member - Tony F (NSW) - Tuesday, Jun 30, 2009 at 23:12

Tuesday, Jun 30, 2009 at 23:12
Hi Graham, I agree that the preception is that Jaycar are not the top of the range. But my qualified electrical engineer doesn't see any problem with them.
As for the $69 unit compared to the over $200 unit must tell you something. Are we comparing an apple with an orange.
Cheers
Tony F































AnswerID: 372556

Reply By: Maîneÿ . . .- Wednesday, Jul 01, 2009 at 10:15

Wednesday, Jul 01, 2009 at 10:15
Russ,
easy question = easy answer: PURE sinewave inverter

I've attached a 4 plug powerboard with on/off switch's and shortened cable using 6cm wide "velcro" to the top of the Inverter, both items are placed out of the way and can run 4 seperate devices at the same time.
Pure Sine wave Inverters develop 240v (exactly the same as home power) when switched on.

The power cable from the Inverter to the 12v battery should be fused and as short as possible, or attached to the battery with very thick extended cable.

Hint: when looking at different models check that they appear to be well made, are *cooled by a fan* and have thick battery supply cable.

I recomend to run only the laptop get a small capacity "pure sinewave" inverter
Image Could Not Be FoundMaîneÿ . . .
AnswerID: 372588

Follow Up By: Member - Prickle (SA) - Wednesday, Jul 01, 2009 at 17:15

Wednesday, Jul 01, 2009 at 17:15
Thanks, will get someone who knows what they are talking about to have a gander at this. :)
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Reply By: Member - Prickle (SA) - Wednesday, Jul 01, 2009 at 17:17

Wednesday, Jul 01, 2009 at 17:17
Thanks everyone, have kept all this info and will have a good read and try and digest/interpret it before I purchase.

Appreciate the input/replies.

Russ
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Follow Up By: Maîneÿ . . .- Wednesday, Jul 01, 2009 at 19:34

Wednesday, Jul 01, 2009 at 19:34
Russ,
the smooth "pure sine wave" is the same as the 240v electricity in your home, the 'squared' wave is not
Image Could Not Be FoundMaîneÿ . . .
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