Advantages of Open Loop Hall Current Sensors

Mobile phones use many components, and open-loop Hall current sensor is one of them. It is made based on certain principles and can measure and convert current and magnetic fields. Some people have tested the performance of the Hall current sensor. Now the size of this product is getting smaller and smaller, but it shows more and more advantageous features, so it can be applied to more fields in the future, so let's learn about the open loop The advantages of Hall current sensor!

Advantages of Open Loop Hall Current Sensors

Of course, there are many advantages of open-loop Hall current sensors. For example, some manufacturers may modify off-the-shelf equipment, but the use of this product can complete the operation without contact. In addition, the use method is very simple, and the operator can choose a sensor of a different type from the target. Compared to older products, using this component allows for a wider range of inspections, allowing for faster responses and more accurate data. Because of the many benefits, it can be used in many fields. 

The future development direction of open-loop Hall current sensor

Open-loop Hall current sensors are used in power supplies, CNC machine tools, electronic equipment, etc., but with the increase of manufacturers and the increase of market demand, product equipment will need to be changed in the future. For example, work needs to improve stability and cannot be easily affected by the environment. In addition, in terms of appearance, it must also be developed to be as small and light as possible to be suitable for more places. In addition, more new varieties must be released to have more functions. Of course, captured data and information, etc., also need to be handled properly and quickly.

The open-loop Hall current sensor is a magnetic field sensor based on the Hall effect. Open-loop (straight) and closed-loop) magnetic balance) two working modes. The advantages of the direct-type Hall sensor are that the circuit form is simple and the cost is relatively low. The disadvantages are poor accuracy and linearity, slow response time and large temperature drift. To overcome its shortcomings, closed-loop (magnetically balanced) Hall current sensors have emerged. The closed-loop Hall current sensor, also known as the zero-flux Hall current sensor, is composed of a primary side circuit, a magnetic collecting ring, a Hall element secondary coil, an amplifier, and the like.

When the magnetic flux generated by the primary side current IP concentrates the high-quality magnetic core on the magnetic circuit, the Hall element is fixed in the air gap to detect the magnetic flux, and the reversed output from the coil of multiple turns wound on the magnetic core Compensate the current, thereby eliminating the magnetic flux generated by the IP on the primary side, so that the magnetic flux of the magnetic circuit is always zero. After processing by a special circuit, the output end of the sensor can accurately output the current change reflecting the original current. The closed-loop Hall current sensor has a response Short time, high working frequency, strong overload capacity, high isolation and other advantages.

Because the open-loop Hall current sensor has many advantages, by accurately detecting and controlling large current, it can ensure the safe and reliable operation of inverter products, and ensure that the inverter can respond to abnormal situations in time while outputting normally. The reliability of the frequency converter is improved, and the safety quality of the frequency converter is improved. Therefore, the advantages of the Hall current sensor in the inverter are becoming more and more obvious, and it has become an indispensable part of the inverter industry.

The above are the advantages of open-loop Hall current sensors. If you want to know more, please feel free to contact us!