Current sensors measure AC and/or DC current levels. The sensors discussed here measure current and provide some sort of output that corresponds to the current being measured. The most important distinction to make when selecting a current sensor is whether AC and/or DC current needs to be measured ...
Fig. 11: A figure Explaining Current Sensors based on Electronic Technology. In contrast to open loop and closed loop technology, they do not use magnetic circuit. Primary current I p creates magnetic flux and different hall probes included in the sensor provides a voltage proportional to the magnetic flux.
A current sensor is a device that detects electric current in a wire, and generates a signal proportional to that current. The generated signal could be analog voltage or current or even a digital output. The generated signal can be then used to display the measured current in an ammeter, or can be stored for further analysis in a data acquisition system, or can be used for the purpose of control.
Ideally, current sensors should not use any power when detecting the current in the circuit. However, real current sensors do require a part of the energy from the circuit for providing the information. For sensing AC currents, current sense transformers are typically useful.
The Basics of Current Sensors By Carolyn Mathas Contributed By Electronic Products 2012-09-13 Current sensors are either open- or closed-loop. Open-loop current sensors measure AC and DC currents and provide electrical isolation between the circuit being measured and the output of the sensor (the primary current is measured without electrical ...
How do Motion Sensors Work? One of the most popular sensors used in a range of day-to-day appliances today, is the motion sensor. Also referred to as motion detectors, motion sensors are most often used in commercial establishments and home security systems.
Eddy-Current sensors are noncontact devices capable of high-resolution measurement of the position and/or change of position of any conductive target. Eddy-Current sensors are also called inductive sensors, but generally "eddy current" refers to precision displacement instruments (or nondestructive testing probes) and "inductive" refers to inexpensive proximity switches.
Sensing variable current flow is a major requirement in frequent electronics systems and the strategies to do so are as an assortment of as the applications themselves. A sensor is a unit that can determine a physical phenomenon and compute the latter, in other words it gives a measurable demonstration of the wonder on a particular scale or range.
While the underlying electrical engineering is sophisticated, the basic principle of operation is not too hard to understand. At the heart of an Inductive Proximity Sensor (“prox” “sensor” or “prox sensor” for short) is an electronic … Continue reading "Basic Operating Principle of an Inductive Proximity Sensor"
In the most usual cases, sensors transform some property of the real world, such as temperature, mass, speed, pressure, etc to some electrical signal that we can measure. The signal becomes a representation of the property. Commonly, a voltage rep...