Question about converting ac to dc.
If i were to buy a this cheap generator http://www.northerntool.com/webapp/wcs/stores/servlet/product_6970_200313480_200313480
it puts out 120 v with 1000 watts to convert to amps (Amps = Watts/Volts)
1000 watts/ 120 v = 8.3 amps
how would i convert that to dc
if i convert the volts to 13.8 it gives me 72.4 amps but i'm lost the the ac to dc convertion. 72 amps would be great but don't believe i did that right.
What you are talking about (ref: Ac to DC conversion) is a DC Power supply, the same type of power supply you would plug into a wall outlet at home. In the 1KW range these are not small things, however, unless you are looking to use all 1KW of output from the generator there is nothing preventing you from just using the size power supply you need. So if you need 20A at 13.8V then go buy a 20-25A power supply and run it off your generator. Alternately if you peak load is say 35A but most of the time it's less than say 20A you can use a small garden tractor battery as a buffer, using a 20A power supply to float charge the battery and handle most of the nominal load while allowing the battery to handle the peak loads. Anyway, we use a lot of Astron supplies at work, several 20A and 35A ones and a few 50A ones. We actually have an 80A peak load product wired up as I described with a battery and 50A supply on a fixture. The stuff is expensive brand new although sometimes you can pick them up reasonably cheap on ebay (but you need to be careful about ones having been "repaired").