摘要 |
A cylindrical capacitive tachometer generator having a rotor and a stator, and a cylindrical air gap between facing cylindrical surfaces of the rotor and stator, each provided with equal numbers of teeth uniformly distributed over the circumference and spaced from each other by tooth gaps, the effective capacitive width of a tooth on one cylinder surface being smaller than the effective capacitive width of a tooth or of a tooth gap on the other cylinder surface. |