@article{oai:soar-ir.repo.nii.ac.jp:00013190,
 author = {中村,  喜太郎},
 journal = {信州大学工学部紀要},
 month = {Dec},
 note = {There is often the necessity for keeping the voltage of the direct current generator automatically and constantly, if its speed fluctuates in wide range. I have been studying a constant voltage direct current generator as shown Fig, 1. This generator is simple in connection system and its voltage regulationn will be less than that of Rosenberg Generator or Bergman Generator when increased the main exciting ampere-turns ATmf. I wish to apply this system mainly to the small-size generator and as a matter of fact, I think it is better to use the permanent magnet in place of the main field winding Fm., Article, 信州大学工学部紀要 6: 151-156 (1956)},
 pages = {151--156},
 title = {定電圧直流発電機の一方式について},
 volume = {6},
 year = {1956}
}