The unipolar Hall effect switch has a magnetic operating threshold (Bop). If the Hall cell is subjected to a flux density greater than the operating threshold, the output transistor will turn on; when the flux density drops below the operating threshold (Brp), the transistor will turn off. Hysteresis (Bhys) is the difference between two thresholds (Bop-Brp). This built-in hysteresis page enables a net switching of the output even in the presence of external mechanical and electrical noise. The digital output of the unipolar Hall effect can be adapted to a variety of logic systems. These devices are ideal for use with simple magnetic bars or magnets. The unipolar Hall switch will have a magnetic pole induction for each of its front and back sides. In the specific application, attention should be paid to the magnetic pole of the magnet, and the unipolar non-inductive output will be caused.
2, bipolar Hall effect switch (digital output)
The bipolar Hall is specifically divided into a bipolar non-latching Hall switch and a bipolar latch type Hall switch.
Bipolar Hall-effect switches are normally turned on with sufficient magnetic field strength in the South Pole and are turned off with sufficient magnetic field strength in the North Pole, but if the magnetic field is removed, it is randomly output, either open or closed. A bipolar latched Hall-effect switch is normally turned on with sufficient south pole magnetic field strength and is turned off if the north magnetic field strength is sufficient, but does not change the output state if the magnetic field is removed. These Hall-effect switches can be magnetically driven using north-south alternating magnetic fields and multipole ring magnets.
3. Bipolar latch type Hall effect switch (digital output)
When it is placed on the n pole (or s pole), it will remain on after the magnetic field is removed; it will only be turned off when it is placed on the s pole (or n pole), and it will remain on or off after the magnetic field is removed. Until the next time the magnetic field changes. This feature of retaining the last state is the latching feature. This type of Hall benefit switch is a bipolar latching Hall effect switch.
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