My guess is you want an inverter and you need to decide what the output waveform can be? You can get a MSW (Modified Sine Wave) or a PWM (Pulse Width Modulation) sine wave or a PSW (Pure Sine Wave)? The latter waveform being expensive. The bottom line is then power. How much power do you need? For example 240 VAC @ 10 Amps for example is 240 * 10 = 2400 Watts. Therefore on the 12 Volt input side this becomes 2400 / 12 = 200 Amps so you will need large cables and a very large battery on the 12 Volt side to get 240 VAC @ 10 Amps on the output side. Those numbers do not even take into consideration the efficiency of the converter / inverter. While 12 Volt input inverters do exist the newer high current models use 24 VDC or higher inputs to reduce the needed current. A 5000 Watt 240 VAC inverter capable of 240 VAC @ 20 Amps would typically be fed using a short as possible length of 4/0 gauge wire (US Standard) and fused at 500 Amps on the input side.Hey Fellas,
I need to convert 12dc to ac with as high as possible amps.
I am currently using a 150W inverter that puts out 240v ac with 10 amps but need more amps.
Definitely a buy versus make situation. You can't come close to the commercially available units, unless you need something they cannot deliver.
12VDC 10Amp Input, 240 VAC OutputHello,
Where is the 10 Amps?
When it is at the input (12 volts side), you are putting in 10 Amps X 12 Volts = 120 Watts.
Depending on the efficiency of the inverter, you will get likely get about 100 Watts at the output.
At 240 Volts that will be about 100 Watts / 240 Volts = 0.42 Amps.
If you want more power, take a larger inverter.
12 VDC @ 10 Amps = 120 Watts. That 120 Watts at 240 VAC = 240 / 120 = 2 Amps. Actually less because even on a good day your inverter efficiency will be about 80%. So again I ask how much current do you want at 240 VAC? Your original post stated:12VDC 10Amp Input, 240 VAC Output
So what you stated makes no sense. An inverter that puts out 240 VAC @ 10 Amps is a 2400 Watt inverter. You stated you wanted more than the 10 Amps you stated you had. A 240 VAC inverter which is a 150 Watt inverter would be 150 / 240 = 0.625 Amp so what is it exactly you want?I am currently using a 150W inverter that puts out 240v ac with 10 amps but need more amps.
Is it possible to get a battery with that high a current. And if so, any recommendations as to where i can get one?OK.
According to Jaycar, that inverter will supply 150 watts into a load which, with 230 volts RMS across it, will draw I = P / E = 150W / 240V = 0.0625 ampere from the inverter. The inverter is touted to exhibit greater than 90% efficiency, which means that for 150 watts out it'll need about 167 watts in, which is about 14 amperes into the inverter's input with 12VDC across it .
If you need to be able to supply more current into a higher power load, then probably the easiest way to get there would be to buy a commercially available inverter and use that.
For example, Jaycar offers this:
View attachment 128328
Its spec's also claim >90% efficiency, so 1500 watts out would require 1667 watts in; 12volts X 139 amperes.
Hi,Is it possible to get a battery with that high a current. And if so, any recommendations as to where i can get one?
Nah Mate, just looking for a battery to run it separately, not from a car or RVHi,
Mate are you seriously considering the 1500W?? You will need one hell of a huge battery/bank of batteries for powering that I guess. But if you are talking about the above 150W inverter it is possible but it depends on the size of your car battery. If your car battery is the normal small one it will pretty much drain the battery real quick than it can be charged and ruin it. Plus the cigarette lighter receptacle (not the ACC one, it handles a lot less) is usually able to handle 10-15Amps max. The lighter pulls around 8.5 to 10Amps, but the lighter functions only for like 15-25 sec so the wiring is able to handle that load and the battery can cope with it. But using an inverter will put continuous load and damage the outlet, wiring and run down your battery unless you have a big bank of truck batteries. Also, vehicle batteries are not meant for heavy continuous deep discharge. Are you planning to use this in an RV?
You can get one of those deep cycle solar power batteries. The bigger the better.It will help you run the inverter longer. Look for at least a 12V 20Ah if you plan to run only for brief periods of time. How much current does your load draw at 240VAC?Nah Mate, just looking for a battery to run it separately, not from a car or RV
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by Luke James
by Luke James
by Luke James