Guru
Joined: 11/02/2018
Location: AustraliaPosts: 2626
| Posted: 01:53am 03 Jun 2025 |
In some DC3 aircraft the DC HT supply for all the valve equipment was a type of M-G set that would be better described as a motor-transformer.
It had a single armature with two sets of windings on the armature and a commutator at each end. 28V in one end and 300V out the other.
The main reason for it was lighter weight but it was also more efficient than separate motor and generator.