As it has not been possible for us to have the street current in the daytime, nor up to the present to have our own lighting plant, it has been our custom for several years to charge storage cells in the evening by means of a 110- volt street current passed through a water rheostat. This method of reducing the current was so unsatisfactory that we purchased a rotary transformer, one end of which is a motor, run by the 110-volt current, the other a 15-volt dynamo, and installed a suitable storage battery. The plan of the arrangement of battery and switchboard, which has proved very satisfactory, may be of value to others.
Proceedings of the Iowa Academy of Science
©1904 Iowa Academy of Science, Inc.
Tilton, John L.
"The Switchboard and Arrangement of Storage Battery at Simpson College,"
Proceedings of the Iowa Academy of Science, 12(1), 139-141.
Available at: https://scholarworks.uni.edu/pias/vol12/iss1/23