X-Nico

British Rail Class 415

There were motor-generators for the lighting and current control whereas previous practice had been to use series lighting and a voltage divider for the control circuits.

Hill's muscle model

The model is constituted by a contractile element (CE) and two non-linear spring elements, one in series (SE) and another in parallel (PE).

Rubber ducky antenna

Electrically short antennas have considerable capacitive reactance, so to make them resonant at the operating frequency an inductor (loading coil) is added in series with the antenna.

SBB-CFF-FFS Ce 6/8 I

The stepping switch transmitted the traction current to the motors which were connected in series circuit.

Electric power system

One of Westinghouse's engineers, William Stanley, recognised the problem with connecting transformers in series as opposed to parallel and also realised that making the iron core of a transformer a fully enclosed loop would improve the voltage regulation of the secondary winding.

see also