The difference between a3144 and a3134

Everyone knows that a3144 and a3134 are the types of hall sensors, so what is hall sensor, this article will lead you to understand: the origin and history of hall sensors, hall sensor working principle, a3144 sensor characteristics, a3134 sensor characteristics, the difference between the two sensors.
a3144

The origin and history of hall sensor

Hall sensor is a kind of magnetic field sensor based on hall effect. The hall effect is a kind of magnetoelectric effect, which was discovered by hall in 1879 when he was studying the conductive mechanism of metal. Later, it was found that the semiconductor, conductive fluid and so on also have this effect, and the semiconductor hall effect is much stronger than the metal hall effect, using this phenomenon to make a variety of work components, widely used in industrial automation technology, detection technology and information processing.
a3144

How hall sensors work

There is A hall semiconductor chip in the magnetic field, through which A constant current I passes from A to B. Under the action of lorentz force, the electron flow of I is shifted to one side as it passes through hall semiconductor, causing the film to generate a potential difference in the direction of CD. This is called hall voltage.
Hall voltage varies with the strength of the magnetic field. The stronger the magnetic field, the higher the voltage, the weaker the magnetic field, the lower the voltage. The value of hall voltage is very small, usually only a few millivolts. In order for the hall IC to function as a sensor, the magnetic induction intensity needs to be changed mechanically. The method shown in the figure below is to use a rotating impeller as a switch to control the magnetic flux. When the impeller blade is in the air gap between the magnet and the hall IC, the magnetic field deviates from the chip and the hall voltage disappears. In this way, the change of the output voltage of hall IC can indicate a certain position of the impeller drive shaft. By using this working principle, hall IC chip can be used to ignite the timing sensor. The hall effect sensor is a passive type sensor, which can only work with an external power supply.
hall sensor

A3144 (unipolar hall sensor) sensor features:

  1. Rated working voltage 4.5v ~ 24v, limit voltage down to 3.5v;
  2. Operating temperature: -40℃ ~ 150℃;
  3. Rated output current (irrigation) : 25 mA, maximum output current (irrigation) : 50 mA;
  4. The switch response time is about 1 s, and the operating frequency is DC ~ 100 kHz.
  5. The temperature drift between the operating point and the release point is small;
  6. There are a variety of packaging and outer packaging options;
  7. No mechanical contact, no spark, stable switch signal, no shaking moment, high reliability, high safety;
  8. The products comply with eu RoHS directive 2011/65 / eu and REACH regulation 1907/2006 / eu.
  9. To learn more about the a3144 sensor features, see the unipolar hall sensor AH3144

A3134 (bipolar hall effect switch) sensor features:

  • Excellent temperature stability
  • Operate unregulated supply
  • Open collector 25 mA output
  • Reverse battery protection
  • Activation of a small, launched permanent magnetic material
  • Solid state reliability
  • small
  • Resistance to physical stress
This low hysteresis bipolar hall effect switch is a very temperature-stable and stress-resistant sensor especially suitable for operating in the extended temperature range of + 150°C. The optimal high temperature performance is achieved by a new Schmitt that makes it possible to compensate for temperature changes in the hall element by maintaining the stability of the triggering circuit at the operating and release points.

The difference between a3144 sensor and a3134 sensor

By comparing the characteristics of the two sensors, it is not difficult to see that they are still different in terms of working voltage or other aspects. If you want to choose the sensor you need, please contact us.

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Omnipolar Hall IC

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Method Of Detecting Switch Type Hall Sensor

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In the use of hall sensor for maintenance machinery, we will encounter holzer not working, from holzer's shape can not distinguish whether the holzer element is damaged, and how to detect whether the switch type of hall sensor is damaged. Taking Holzer YS282 as an example, the test method of switch type Holzer element is as follows: First, find a resistance R of 1K Omega, which is connected to the figure 1 and 3 feet, and connect the positive pole of the DC power of the 12V to the foot of the  switch type hall sensor YS282, and the anode is connected to the foot. The multimeter is placed in a DC 50V file, the red pen is connected to the foot, and the black pen is connected to the foot, and the pointer changes of the multimeter are observed. When the magnet N is very close to the test point of the hall sensor YS282, the pointer of the multimeter is deflected from the high level to the low level; when the N pole of the magnet is far away from the test point of the Holzer element Y
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How To Use Water Flow Sensor？

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The  Water Flow Sensor  consists of a plastic valve body, a water rotor and a Hall Effect Sensor. When the water flows through the rotor, rotor rolls and the speed of it changes with a different rate of flow. The hall-effect sensor outputs the corresponding pulse signal. This type of sensor can be found on different diameters, water pressure (MPa) and flow rate (L/m) ranges. Make sure to select one that will cover your needs. The sensor that I have it has 20mm diameter, <1.75Mpa water pressure and ~30 L/m flow rate range. A  Water Flow Meter Sensor  is a device that measures the amount of water flowing through a pipe. There are several water flow meter technologies to choose from depending on the water measurement application, maintenance requirements, and budgetary terms.  Each of these types of water flow meters has a unique principle of operation, specific application benefits, and overall cost-of-ownership. The question is: What water flow meter should you choose for your w
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