True sine wave inverter vs Pure sine wave any difference?

[Sunking]

You can get into the Ball Park by Amps = [AC watts / Battery Voltage] / Inverter Efficiency.

So if your puter draws 300 watts from the inverter, the inverter efficiency is 90%, and battery voltage is 12 volts then [300 watts / 12 volts] / .9 = 28 amps. So the battery is supplying 12 volts x 28 amps = 336 watts. What it does not account for is the wiring losses and some inverter non linearity issues. But it is close.

For giggles and grins get you a 50 amp shunt and install it between the battery and inverter. You can then monitor the battery discharge current in real time with a volt meter. Something like this minus the shunt on the left..

[RussN9ZP]

You can get into the Ball Park by Amps = [AC watts / Battery Voltage] / Inverter Efficiency.

So if your puter draws 300 watts from the inverter, the inverter efficiency is 90%, and battery voltage is 12 volts then [300 watts / 12 volts] / .9 = 28 amps. So the battery is supplying 12 volts x 28 amps = 336 watts. What it does not account for is the wiring losses and some inverter non linearity issues. But it is close.

For giggles and grins get you a 50 amp shunt and install it between the battery and inverter. You can then monitor the battery discharge current in real time with a volt meter. Something like this minus the shunt on the left..

Thanks!! Appreciated as always.

[Mike90250]

Strongly consider a used laptop computer, what you spend for the computer, you will make up for in electrical gear savings of not needing 300W of power to run it. Use flash drives instead of burning CD's

[RussN9ZP]

Strongly consider a used laptop computer, what you spend for the computer, you will make up for in electrical gear savings of not needing 300W of power to run it. Use flash drives instead of burning CD's

I hear ya Mike and thanks.Unfortunately what i run with my computer requires a modest gaming computer,probably close to 2k in the laptop world.

My initial estimate of 300 watts was a little high. The PC runs about 60 watts at idle and jumps to 150 watts when running the program or about 15 to 20 amp DC draw. This is only for play and learning for me, money savings is not the motive.