Capacitive Proximity Sensors Capacitive proximity sensors work on the principle of the capacitor. The main components of the sensor are the plate, oscillator, threshold detector and an output circuit.

4. Three topologies for capacitive sensors: proximity sensor using a finger as the ground plate (a), liquid-level sensing with parallel sensor and ground (b), and material detection and analysis (c).

The sensor tip is a small capacitor coupled to the live conductor. As a result, the sensing circuit in the tester detects voltage and signals to you via a lamp, tone, ticking noise, or buzzer that ...

Comparison of Capacitive with Induction Sensors. Capacitive sensing involves charging up plates, so it is somewhat slower than inductive: 10 to 50 Hz, with a sensing distance from 3 to 60 mm.

Axzon Inc. Technical Guide to the Working Principles and Applications for Wireless Passive Sensors. Axzon Inc. 3rd generation Magnus® S3 IC Powered Wireless Passive Temperature, Moisture ...

Two tiny ICs and a few passive components can yield a capacitive proximity sensor with excellent sensitivity and extremely fast response time. The circuit’s operation leverages the pulse-front ...

Capacitive touch can be in close proximity, says Atmel Guest columnist Helen Francis, product marketing manager at Atmel Touch Technology, says that capacitive touch can be used as a proximity sensor ...

Axzon Inc. Technical Guide to the Working Principles and Applications for Wireless Passive Sensors. Axzon Inc. 3rd generation Magnus® S3 IC Powered Wireless Passive Temperature, Moisture ...