In optical fiber communication, optical module plays a very important role. Laser driver used on the front end of optical emission can realize the laser bias and modulation. High speed voltage signal is converted into high speed current signal to modulate laser.(more)
Thermoelectric cooler (TEC) is built on the thermoelectric system, which can both cool and heat, depending on DC current direction. As TEC has no refrigerant, no pollution, no rotation parts, no noise, long service lifetime and some other advantages, it has been widely used in electronic fields, laser fields and so on.(more)
With the development of science and technology, there are more and more researches about thermoelectric cooler (TEC) and the achievements on the improvement of the material optimal value and the optimization of thermoelectric cooler has been obtained. Now TEC has been widely used in many fields, and along with the time and research development, TEC will play more and more important role in the electronic and some other fields.(more)
Thermoelectric cooler (TEC) is built based on Peltier effect. It is a kind of solid components, which has no pollution, high reliability, small size, rapid cooling, rapid heating and some other characteristics. It has been widely used in electronic, medicine, industry, agriculture and some other fields. However, TEC still has some problems.(more)
High reliability and long life time can be achieved when the thermal cycling times is few, the temperature change range is narrow, upper temperature limit is low, as well as that temperature change is slow. On the contrary, in a wide temperature range, high changing speed, many times cycling, it will shorten the life time of TECs largely. It's noteworthy that the absolute life time of TECs depends largely on the total cycling times, not the total time for the cycling.(more)
Peltier controller is also called TEC controller, is an electronic device which is used to regulate the thermal load temperature. The temperature of the thermal load can be increased or decreased by using a TEC depending on the current direction going through the two terminals of the TEC. By controller the direction of the TEC current, peltier controller can regulate the temperature of the thermal load.(more)
It can be seen as the reliability test for TECs to make continuous thermal cycling to TECs in a wide temperature rang. Especially temperature of TECs in this process rises to very high. Compared with most applications, this process will cause higher failure rate. Most of failures are rooted in unmatched thermal expansion coefficients of thermal materials and other components. This is inevitable. It performs as initial failure, but sometimes, performance degeneration will be observed before failure.(more)
Thermoelectric cooler becomes more prevalent in thermal system design. Thermoelectric cooler is the fastest and most compact method in temperature control. Heat transport will be produced when the current goes through the peltier elements in peltier cooler. One side of the peltier cooler is attached to a heat sink and the other side is attached to the object. Then the object will be cooled or heated, depending on the direction of the current. The peltier controller can generate currents when a target temperature is set. The peltier controller should have a sensor input.(more)
NTC thermistor is the abbreviation of negative temperature coefficient thermistor. The main function of NTC thermistor is temperature detection. With the continuous emergence of intelligent computer control and automation equipments, NTC thermistor plays a more and more important role in electronic fields. It has been used in heater, air conditioner and some other aspects. The following is the physical photo of NTC thermistor.(more)
