Introduce the performance of four rare X-sensitive resistors

Resistors are the most widely used components in electronic circuits. They are usually formed in different series according to power and resistance for circuit designers to choose. From the earliest molded carbon core resistors to the later carbon film resistors, metal film resistors, metal oxide film resistors, etc., has a history of more than 100 years. The low-key members of the family of semiconductor resistive resistors, we are more common with varistors and photoresistors. The former is a frequent customer in our power inlet protection circuit. The latter is widely used in missile guidance, astronomical detection, non-contact measurement, human lesions. Detection, infrared spectroscopy, infrared communication and other defense, scientific research and industrial and agricultural production. Today I will introduce you to the other four rare X-sensitive resistors. See what special features are there?

X1: Magnetoresistive

Magnetoresistors are fabricated using the magnetoresistance effect of semiconductors and are commonly processed from InSb (indium antimonide) materials. A magnetoresistor is made using a magnetoresistance effect whose resistance varies with the change in magnetic flux density passing through it. It is generally used for the detection of magnetic field strength, magnetic flux leakage and magnetism; it is used as a control element in AC converters, frequency converters, power voltage converters, displacement voltage converters, etc.; it can also be used for proximity switches, magnetic card character recognition, Magnetoelectric encoder, motor speed measurement, etc. or for making magnetic sensors.

X2: Humidity resistance

The humidity sensitive resistor is made by utilizing the principle that the moisture sensitive material absorbs moisture in the air to cause a change in its own resistance value. The humidity sensitive resistor is characterized in that the substrate is covered with a film made of a moisture sensitive material, and when the water vapor in the air is adsorbed on the moisture sensitive film, the resistivity and the resistance value of the element are changed, and this characteristic is utilized. The humidity can be measured.

X3: gas sensitive resistor

A gas-sensitive resistor is a semiconductor-sensing device that detects a mechanism in which the conductivity of a semiconductor itself is changed by adsorption of a gas. It has been found that certain oxide semiconductor materials such as SnO2, ZnO, Fe2O3, MgO, NiO, BaTiO3, etc. have gas sensing effects.

X4: Force-sensitive resistor

A force-sensitive resistor is a resistor whose resistance changes with pressure, and is called a piezoresistor in foreign countries. The so-called pressure resistance effect is the effect of the resistivity of a semiconductor material as a function of mechanical stress. Can be made into a variety of torque meters, semiconductor microphones, pressure sensors and so on. The main varieties are silicon force-sensitive resistors, selenium-bismuth alloy force-sensitive resistors, and relatively speaking, alloy resistors have higher sensitivity.