Circle diagram Circle diagram First conceived by A. Heyland in 1894 and B.A. Behrend in 1895, the circle diagram is the graphical representation of the performance of the electrical machine drawn in terms of the locus of the machine's input voltage and current. The circle diagram can be drawn for alternators, synchronous motors, transformers, induction motors. The Heyland diagram is an approximate representation of circle diagram applied to induction motors, which assumes that stator input voltage, rotor resistance and rotor reactance are constant and stator resistance and core loss are zero. Another common circle diagram form is as described in the two
Wenxiang diagram Wenxiang diagram The wenxiang diagram, also known as the wenxiang graph, was proposed in 1997 by Kuo-Chen Chou (周国城), Chun-Ting Zhang (张春霆), and Gerald M. Maggiora for helping intuitively analyze the disposition of amphiphilic alpha helices in heteropolar environments It is closely related to the earlier 2D diagram called a "helical wheel", which is a slightly idealized projection of the Calphas down the helix axis, also with one-letter-code labels and color-coded symbols to show the sequence and its properties. This diagram is named after the mosquito coil (), a coiled incense for repelling mosquitos, because of its similar shape. Because