NTC thermistor refers to negative temperature coefficient thermistor. NTC thermistor is made up of manganese, cobalt, nickel and copper and other metal oxides. There are many kinds of advantages, such as compact size, high accuracy, high stability, wide range of working temperature and so on. NTC thermistor can be used for temperature measurement and control, temperature compensation and so on.(more)
Peltier controller is an electronic device that is used to driving Peltier module with high accuracy to control and regulate the object temperature. The Peltier controller features high energy efficiency, compact size, zero EMI, which has been widely applied in many industries.(more)
Thermistor is a kind of sensitive elements. According to different temperature coefficient, thermistor can be mainly divided into two types, positive temperature coefficient (PTC) thermistor and negative temperature coefficient (NTC) thermistor. With the increase of temperature, the resistance of PTC thermistor will increase, and the resistance of NTC thermistor will decrease. PTC thermistor and NTC thermistor both belong to semiconductor devices.(more)
Glass sealed NTC thermistor is a kind of NTC thermistors, which is mainly used for temperature compensation. The main features of glass sealed NTC thermistor is high reliability, high stability, compact size, light weight, high temperature resistance and moisture resistance, but its response time is little longer. What’s more, this NTC thermistor has high accuracy of measurement and wide range of temperature. It is very convenient to be installed on PCB. Because of the glass wrapping, this NTC thermistor can be utilized in high-temperature and high-moisture environment.(more)
As shown figure 1, the heat flow ∅_0 goes through the bottom of heat sink and then goes into its root. In the root, the heat flow will be divided into two shares ∅_1and∅_2, and then through the root and environment air, start convection and heat exchange. Finally, the heat flow goes into the environment by heat exchange with fins. The heat resistance network model is shown in figure 1.(more)
LED is a kind of solid semiconductor lighting devices. Similar with traditional light source, during work, the solid light source will generate heat because of current flowing in the diodes. As long as the current flows continuously, the heat will continue to be produced. The node temperature of LED must be below 125℃. The high node temperature will bring many adverse effects, such as the quantum efficiency of LED reducing, the luminousefficiency declining, the peak wavelength shifting and service lifetime severely shortening.(more)
With the development of science and technology, TEC has attracted more and more attention and it has been widely used in our life. Now the following is about the application of TEC in home appliances.(more)
Seebeck effect, Peltier effect and Thomson effect found the basis of thermoelectric theory of thermoelectric coolers (TEC). In the view of the history of TEC (picture below), it has roughly gone through three stages of development.(more)
