Both circuits have the same Voltage conversion and draw the same current. Click on the transformer then click the wrench below. Do the same for the other Transformers. The 400 HZ the transformer is 1 Henry, and the 60 HZ circuit the transformer is 6.66 Henry's. 2 * PI F L. 2 * 3.14 * 60 HZ * 6.66 H is the same as 2 * 3.14 * 400 HZ * 1 H. 1 Henry is less winding and smaller. Airplanes use 400 HZ so they can have smaller transformers.
