On modeling on a single-winding forced valve electromagnet in a circuit with a ballast resistorYe. I. Gracheva, V. N. Petrov, N. V. Russova, D. V. Samuilov, G. P. Svintsov and I.V. ProtosovitskiE3S Web Conf., 124 (2019) 02012DOI: https://doi.org/10.1051/e3sconf/201912402012