Thread: Cheap Pure Sine Wave Inverters.....

Like this?

OK,

Following are some pics, thanks for the tip forgot about the computer interface, needs an rs232 lead (ext modem?).

My intended use is charging camera batteries, laptop, playstation (through DVD screen) etc.

Still not sure on if I hard wire or just splice in and leave the batteries in place (thinking is as the batteries are still good it will provide a little additional capacity but more importantly hopefully help provide a stable supply particularly with the fridge cutting in and out etc)

Like to hear others thoughts on this.

That's a nice looking unit Feral. The power plugs are easy enough to get, Dick SMiths, computer stores etc.

Depends on if you want to make up some adaptors from them to standard 3 pin plugs or change the plug on your equipment (all done by an electrician of course).

Out of curiosity towards the top is a black "plug" for the battery? Is that just a switch or could it be used for the input?

If the battery is stuffed and you don't need/want the extra capacity just remove the battery section and dispose of it, takes up less room. Or you could measure up and fit a sealed 12v battery in there (assuming it is 12v of course) and have a portable unit to put in the tent/camper etc....... hmmm endless options!

The power switch on mine does turn the inverter side on/off. But if you get one that doesn't it would be a very good safety measure!

(If your keeping the batteries then you would really want to mount it between the battery and inverter.

Thanks.....

I am printing out the instruction manual now so I have to have a good read to get it all worked out.

I have found the original input and output leads to go with it. They are as supplied with the appropriate plugs on the end. The output lead has a normal 6 point power board attached, so I don't need an electrician to wire it up at all.

Lucky, heh....

Originally Posted by waynep

probably want to put a switch of some sort in the 12V line too ...I imagine once you connect the 12V it just starts to hum away ....

The switch will need to be suitable - startup current could easily approach 100A and for 300w will be around 30A. Battery lead should also have a fuse, possibly a slow blow one to handle starting current. (If only used for small loads both the switch and fuse could be lower rating, but this is not a good idea - sooner or later someone will plug in something that draws more current - and replace the fuse with a bigger one if it blows!

John

I was deleting my post re the switch but you guys got in before me ...damn you're quick ...thinking about it, most of these UPS would have something in the 12V line anyway wouldn't they ?

Gives you a bit more flexibility in mounting it then too!