Differential capacitance detector.

摘要

A differential capacitance detector comprising two pulse generators (3, 6) and a comparator (7). The width of each pulse generator output is representative of the capacity of each of two capacitors (2, 5) whose differential is to be determined. The comparator (7) provides a third pulse whose width is the difference of th width of the pulses input from the pulse generators (3, 6) and is representative of the capacitance differential between the two capacitors (2, 5).