Capacitive Sensors

This lecture covers the fundamental principles of capacitance, including equations for determining capacitance of different shapes, such as discs and spheres. It also discusses capacitive sensors, dielectric constants, and push-pull differential measurements. The lecture explores linear and non-linear variations in dielectric constants, as well as measurement circuits using capacitive sensors. Additionally, it delves into switched capacitor circuits for sequential capacitance measurements, utilizing principles of charge transfer and integrators. The lecture concludes with discussions on oscillators, frequency coding of capacitance values, and practical considerations in capacitor circuits.