A hall effect current sensor allows non-contact detection of direct and alternating currents, using a hall element, a magnet-electric converting element. This minimizes power loss of the target current circuit and has a simple structure with high reliability.
What is a Hall effect and what is a Hall effect sensor?
A Hall effect sensor is an electronic device that is designed to detect the Hall effect, and convert its findings into electronic data, either to switch a circuit on and off, provide a measurement of a varying magnetic field, be processed by an embedded computer or displayed on an interface.
What does Hall effect means?
The Hall effect is when a magnetic field is applied at right angles to the current flow in a thin film where an electric field is generated, which is mutually perpendicular to the current and the magnetic field and which is directly proportional to the product of the current density and the magnetic induction.
What is Hall effect and its uses?
Hall effect devices are one of the most common ways to measure magnetic fields. With this type of sensor, the path of a flowing electrical current within a semiconductor is changed by a nearby magnet.
What is the difference between CT coil and Hall effect sensor?
Yes, Hall effect sensors sense the magnetic field caused by current, and can therefore measure absolute current. A current transformer can only sense current down to some minimum frequency below which gain falls off rapidly. A current transformer can't sense a fixed current.
What is the difference between a Hall sensor and a inductive sensor?
Hall effect sensors respond to static (non-changing) magnetic fields. This is a key difference from inductive sensors, which respond only to changes in fields.
What is a Hall effect sensor used for?
Using magnetic fields, Hall effect sensors are used to detect variables such as the proximity, speed, or displacement of a mechanical system. Hall effect sensors are non-contact, which means that they do not have to come in contact with a physical element.
What is difference between current sensor and current transformer?
Current sensors can detect both AC and DC, external power supply is needed. Current transformers can only measure AC current and output signal is AC 5A or AC1A, external power supply isn't needed. Common current transformer can only measure AC current.Nov 14, 2018
What is called Hall effect?
Hall effect, development of a transverse electric field in a solid material when it carries an electric current and is placed in a magnetic field that is perpendicular to the current. This phenomenon was discovered in 1879 by the U.S. physicist Edwin Herbert Hall.
How does the Hall effect work?
So, how does a Hall effect sensor work? Using semiconductors (such as silicon), Hall effect sensors work by measuring the changing voltage when the device is placed in a magnetic field. In other words, once a Hall effect sensor detects that it is now in a magnetic field, it is able to sense the position of objects.
How does Hall effect switch work?
Hall effect switches and latches are either on or off. A Hall effect switch turns on in the presence of a magnetic field and turns off when the magnet is removed. A Hall effect latch turns on (closes) when a positive magnetic field is applied and remains on even when the magnet is removed.