为了确定霍尔元件的额定工作电流或热阻,必须知道元件因工作电流所引入的温升。本文介绍一种比较准确测量霍尔元件温升的方法。一、原理霍尔元件为体效应器件,其电阻率与温度呈一定的关系。利用这一关系可以得到元件加以工作电流后,所引入的温升。这和二极管或三极管的温升,是利用正向阈值电压和温度的关系来间接测量是相仿的。我们首先测量出元件的内阻(反映了电阻率)与温度的关系,如图1所示。然后再 In order to determine the nominal operating current or thermal resistance of the Hall element, it is necessary to know the temperature rise of the element due to the operating current. This article describes a more accurate method of measuring the temperature rise of Hall elements. First, the principle Hall element body effect device, the resistivity and temperature showed a certain relationship. Use this relationship can be obtained after the components to work current, the temperature rise introduced. This and the diode or transistor temperature rise, is the use of positive threshold voltage and temperature to indirectly measure the relationship is similar. We first measure the internal resistance of the device (reflecting the resistivity) versus temperature, as shown in Figure 1. after that