Old DC traction systems have come up in a couple of conversations recently, both overhead wire and third rail, in USA, UK and elsewhere.
Here are a couple of old text books on the subject, now available free online:
Electric Traction by A T Dover, first published in 1917 but this is the 1954 edition.
Principles of Direct Current Electric Traction by Douglas W Hinde and Herbert E Ingham, published 1946.
Here are a couple of old text books on the subject, now available free online:
Electric Traction by A T Dover, first published in 1917 but this is the 1954 edition.
Principles of Direct Current Electric Traction by Douglas W Hinde and Herbert E Ingham, published 1946.