First, look at the direction of the curve.
When you search for the characteristic curve of ntc thermistor on the Internet, you should be able to know that for such an ntc thermistor, its characteristic curve also includes two types, one is when the temperature rises The resistance value decreases, and the other is that the resistance value increases when the temperature rises. At this time, you must judge its direction according to your own needs, because for ntc thermistors with different characteristic curves, it Can be applied to different occasions, this does not tell the quality of its pros and cons, only its type can be judged.
Second, see if the curve is smooth.
The characteristic curve of ntc thermistor is regular. If the characteristic curve is not smooth enough, the rules between them may be more complicated. Such ntc thermistor may be troublesome in application, or there is no way to measure accurately Temperature, so the smoothness of the curve can be used to judge its quality.
Third, look at the change in the slope of the curve.
For many functions, it has its own derivative, the so-called derivative is the slope at a certain point, so in this case, you can judge the characteristics of the characteristic curve of the ntc thermistor according to the slope, if it The slope change is more obvious or the slope changes faster, then it shows that this kind of resistance is a more sensitive resistance, it can measure temperature changes and current changes more accurately, so this is a high-quality resistance.
The above is a simple analysis of the characteristic curve of ntc thermistor. You can use the characteristic curve of ntc thermistor to judge its quality. Of course, when making judgments, you must also understand some other professions. Technical knowledge, such as its temperature formula, etc., so you can know what factors will affect its quality.
