Introduction of TEG

TEG is the abbreviation of thermoelectric generator, which can convert heat directly into electricity, totally opposite to TEC. TEG can be used as anti-corrosion protection for oil pipeline and gas pipeline and it can also be used as a power supply for monitoring facilities.

The principle of TEG

The operating principle of TEG is based on Seebeck effect found by Tomac Norahh, a German physicist. In an open circuit of two different conductors, if there is temperature difference between two contacts, this circuit will produce electromotive force. It means that with the temperature gradient moving from high temperature region to low temperature region, the electrons in the heated object can produce electric current or electric charge accumulation.

The advantages of TEG 

1 TEG can be used for a long time without shelf life limits and it also does not require special maintenance;　

2 Thermopile operation and the generated voltage are both stable, and there is no short circuit phenomenon;

3 Because of no rotary parts, TEG produce no noise. When comparing with mechanical thermoelectric generator of DC power supply, this advantage is more obvious. 

 

Our company has the ability to design and produce TEG (pictures above). We have many kinds of TEG, and you can select what you need. we will become your one-stop choice for designing and building your TEG. If you are interested in our company, please contact with us. Our web site is: http://www.analogtechnologies.com/

The Brief Introduction to TEC

In 1821, Thomas Seebeck discovered when two conductors with different materials and different temperature are connected, there is current flowing in the loop However, twelve years later, J. C. Peltier discovered an opposite phenomenon, that is ,by deleting a conductor in the loop, the external current can flow through the loop, and then a temperature difference between two connecting points is appeared. This phenomenon came to be known as Peltier Effect. Owing to the limitation of material at that time, the temperature difference in Petier Effect is mostly the thermal resistance produced when large current flows through the materail. Along with the development of material science in recent years, the heating or cooling effect of the connection point becomes more practical, which can be used as heat pumps. In actual application, there's no much difference with the cooling method that is based on fluorine carbon vapor compression refrigeration. There are no moving parts and working fluid in TEC, so it makes refrigeration equipment miniaturization possible.

Basic Operational Principle

Since the Peltier Effect can be linearly controlled by the current, TEC has been used in a large number of applications involving precision temperature control. Temperature sensitive component, TEC, and temperature sensors (thermistors) are integrated in a single module. TEC control requires a power supply with reversible electrical level to provide positive and negative voltage. If you'd like to make this in the single power supply, then H bridge circuit can be utilized. Strong and pulse width modulation (PWM) controls two output voltages, which   change the current flowing through the TEC as well as the current direction. Through constant changing of the current, small sized TEC can control the temperature of all kinds of discrete devices, such as optical fiber laser driver, precision voltage reference, or any other temperature sensitive devices. 

If you are interested in the TEC control , you can visit our website to know more detailed information:http://www.analogtechnologies.com/TECA1-XV-XV-D.html

The difference between TEC and TEG

As shown in the fig1pictures below, there are little few appearance differences between TEC and TEG, but their principles and applications are not the same. 

 

Fig 1. The photo of TEC and TEG

Based on semiconductor materials, a thermoelectric cooler (TEC) can be used as an electronic component of a small heat pump. Through by adding a little low DC voltage to both ends of TEC, heat quantity will flow from one end to the other, and at the same time, the temperature of one end will decrease and the other end will rise. It is noteworthy that as long as the current direction is changed, the heat flow direction will also be changed, so one piece of TEC can simultaneously achieve two functions: cooling and heating. And TEC can be used for precise temperature control.

A thermoelectric generator (TEG) is based on “Seebeck effect” to concert transform heat into electricity directly. In an open circuit with two different conductors, if there are temperature differences between its two contacts, this circuit will produce electromotive force, meaning that with the temperature gradient moving from high temperature region to low temperature region, thus the thermal electron in an object can produce electric current or charge accumulation.Therefore, TEG can be used for power supplies of radios, televisions, tape recorders, computers, and some other devices. 

 

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TEC5V4A-D Peltier Controller TEC Controller

This TEC controller has the following features: high efficiency is more than 90%; there is an actual object temperature monitoring function; the stability is high, 0.01°C. The maximum output current is 4A, and the maximum output voltage is VPS − 0.2V. The TEC controller is packaged in a metal case to block EMI.

This Peltier controller can work efficiently and stably with our Peltier module, thermistor, and heat sink, to form a temperature control system.

For more technical data of this TEC controller, please visit our website at:

http://www.analogtechnologies.com/TEC5V4A-D.html

For more types of Peltier controllers, please visit us at:

http://www.analogtechnologies.com/TEC5V6A-D.html

http://www.analogtechnologies.com/tec-controller.html

ATFC106D Digital TEC Controller with Fan

ATFC106D digital TEC controller assembly is the updated version of the old ATFC105D, which has stopped production now. As shown in the photo below, there is a LED display and a panel for operation. In this panel, you can set different parameters and monitor different status by the LED indication.

This controller assembly consists of a digital display, a TEC controller, a fan controller, and temperature controlled relay control output. It's recommended to use this TEC controller assembly with heat sinks and fans in an enclosed chamber that needs temperature control. This assembly has a high efficiency, over 98%. The output power is also high, 12V and 20A. There is a internal protection circuit which prevents the assembly from over current. There are two control loops in the controller, one is TEC, and the other is fan. The TEC control loop has a bi-directional output in order to achieve both heating and cooling effects, and the fan control loop switches the fan on and off.

This TEC controller assembly can work with our fan and heat sink to regulate an enclosed chamber temperature by driving a TEC array and a fan array.

For more technical data of this TEC controller, please visit our website at:

http://www.analogtechnologies.com/TEC_Controller_ATFC106D.html

For more types of Peltier controllers, please visit us at:

http://www.analogtechnologies.com/tec-controller.html

Peltier TEC Controller TEC5V6A-D

TEC modules are widely used in many applications for heating up or cooling down target objects. TEC controller is a electronic module that is used to control TEC module with high stability and high energy efficiency.

This TEC controller TEC5V6A-D has a maximum output current of 6A and maximum output voltage of VPS-0.3V. The efficiency is high, more than 90%. The users of this TEC controller can use some interface ports to set parameters like the desired object temperature, the maximum output voltage, and the compensation network.

As shown in the physical photo below, this TEC controller is enclosed in a six sided metal enclosure, which can block EMIs from other electronics. Moreover, it comes with a compact size, which saves valuable spaces for most of applications. There are two packages, DIP package and SMT package. The photo shows a DIP package TEC controller.

This Peltier controller can work efficiently and stably with our Peltier module, thermistor, and heat sink, to form a temperature control system.

For more technical data of this TEC controller, please visit our website at:

http://www.analogtechnologies.com/TEC5V6A-D.html

For more types of Peltier controllers, please visit us at:

http://www.analogtechnologies.com/tec-controller.html

The ATEC24V10A-D Peltier Controller

所述 ATEC24V10A-D是电动模块，它被用来驱动热电制冷器（TEC）具有高温稳定性。该珀耳帖控制器具有宽的电压范围从5V到25V，电压信号，所述设定点温度和输出电流限制可设定。此外DIP封装，它也为用户提供了SMT封装。因为它具有一个紧凑的尺寸（参见图1），这是非常方便的使用，携带和存放。  

 

图1. ATEC24V10A-DPeltiercontroller的照片

为了防止从其它电子的干扰，珀耳帖控制器被封装在一个六面金属外壳。有一种补偿网络的内部，并且能够匹配的热负荷特性，以稳定温度循环。该网络还可以Python实现。python_cpp_mix.jpg通过使用外部的组件，使网络参数可以被设置以不同的方式differentthermal载荷。 

 

如果您想了解更多关于珀尔帖控制器，请访问我们的网站：

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