The NTC element is a negative temperature coefficient thermistor, which is widely used in radio production. This paper mainly introduces the applications of the following three aspects.(more)
TEC have both cooling and heating functions. Its working current is DC current, through changing the polarity of the direct current, the TEC can achieve cooling or heating.(more)
Thermistor is a resistor whose resistance value is very sensitive to temperature. It is also known as semiconductor thermistor. The main characteristics of thermistor is high sensitivity to temperature, small thermal inertia, long service life, small volume, simple structure, and various shapes, which has become the sensitive resistor used very widely.(more)
LED is the abbreviation of Light Emitting Diode, which uses solid semiconductor chips as light materials. When adding forward voltage to its two ends, carriers in semiconductors will campsite and release extra energy, which can cause photon emission and generate visible light. The advantage of LED including: efficient and energy-saving, long service lifetime, health light, green environmental protection and so on.(more)
Thermoelectric cooler (TEC), which was first found by Peltier in 1834, is a semiconductor material as the foundation, and it can be used as electronic components of a small heat pump. Through loading a low DC voltage on both ends of the TEC, the heat will move from one side of the element to the other. At this time, the temperature of one side of TEC will be reduced, and the other side temperature will rise. It is worth noting that, as long as the direction of the current is changed, the direction of heat flowcan be changed and the heat will be conveyed to the other end. So TEC can realize two functions of refrigerating and heating at the same time. In addition, TEC can also be used to control temperature precisely.(more)
Power Supply can convert another form power into electrical energy. The generators convert mechanical energy into electrical energy, dry cell convert chemical energy into electrical energy. The battery itself has no electricity. There are positive and negative charges on its two poles. They will provide voltage; electrical conductor has voltage in itself. When we add voltage, it will produce electricity. When the battery’s two poles connect with conductor, it releases charge so that generate electricity. Dry cell also called power supply, there is equipment called eliminator supply convert alternating current into direct current through transformer and rectifier. There is equipment called signal source provide signal. Triode transistor amplification signal which is send before, then we sent signal which it be amplification to circuit in return. We regard triode transistor as signal source to circuit in back. Rectified current, signal source sometimes also called power supply.(more)
The Thermoelectric Cooler is also called Semiconductor refrigeration module, Peltier, etc. . Because of there are two sides, one side absorbs heat, and the other side dissipates heat. Its effect is heat conduction. It does not produce heat by itself. So it is called Refrigeration piece or thermoelectric cooler module.(more)
But some usual semiconductor often is made up of Copper, aluminum or other metallic conductor and two pieces ceramic chip like sandwich biscuit to press something from both sides. The ceramic chip must be heat and conduction well. See the following the picture.(more)
