The smallest lightest weight way it to do this is to generate 180
volts DC with a high frequency DC to DC converter then use a counter
to generate the three phases which drive a six FET three phase H
bridge to generate a modified sine wave using the 180 volts DC that
you generated with the HF transformer which is much lighter weight
than a 400 Hz transformer for the same wattage. This will give you
115 VAC at 400 Hz and eliminates the heavy 400 Hz transformer.
John

On 29 Oct 2005 01:20:54 -0700, wrote:

I've got an ARU 44 gyro and I'd like to power it off my 24VDC system.
It needs 115VAC 3 phase, and about 75W to 100W. Is there an off the
shelf unit that can do this, or maybe someone knows of a schematic to
build my own? I'm an electronics engineer so I can do this, but
inverters are not my specialty so any guidance would be greatly
appreciated.