• concentric circles:

• ellipses:

• hyperbolas:

• parabolas:

• bipolar circles:

• Cassinian ovals:

• elliptical pairs:

• blade to plate shape:

• Maxwell curves:

• square edge using a function derived by the Schwarz–Christoffel method

Three options give slightly different boundary conditions or electrode potentials or . The parameters are shown on the right. The calculated electric fields are shown by color, normalized to the average field or , where is the smallest distance between two electrodes. If you select option 1, the local field is high in the vicinity of sharp electrode edges. When selecting option 2 or 3, the values are reduced owing to blunted edge conditions. The white lines indicate the flux line and the dashed lines are the equipotential lines for constant or constant . Those two families of curves are orthogonal.