21st November 2019


What can sensors be used to measure?

Sensors are used to measure physical quantities such as temperature, light, pressure, sound, and humidity. They send signals to the processor. For example: A security alarm system may have an infrared sensor which sends a signal when the beam is broken.

How does a current sensor works?

Most sensors work because a current-carrying wire produces a magnetic field. Current sensing resistors are used when current is directly measured in the circuit. Hall Effect - Hall effect sensors consist of a core, Hall effect device and signal conditioning circuitry. Inductive sensors are used for AC currents.

What is an electrical sensor?

A device which gives an output by detecting the changes in quantities or events can be defined as a sensor. Generally, sensors produce an electrical signal or optical output signal corresponding to the changes in the inputs.
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