What RPM should an alternator spin at
to put out max power.
I'm am wanting to build a portable power supply.
Let an alternator charge a battery, run 12vdc stuff off that,
or hook up an inverter and run 110vac stuff off that.
I tried running my inverter off the tractor battery,
but I had to run the tractor at full throttle to keep up.
Otherwise I kept getting a low voltage warning beep.
So I want to run an alternator off the PTO at idle speed.
and use a speed increaser to increase the RPM.
PTO speed at idle is about 200RPM.
What should the alternator RPM be.
I already have a water pump I run at 2800 RPM.
I use a 14:1 speed increaser.
If 2800RPM is about right I will run it off that shaft.
Or use pulleys to change the RPM.