Advantages and application of TEC controllers

Advantages and application of TEC controllers_Manufacturer of Thermistors, Laser drivers, Resistor kits, Smt capcitor kits & Tec controllers//

Thermoelectric cooling uses the Peltier effect to create a heat flux between the junctions of two different types of materials. A Peltier cooler, heater, or thermoelectric heat pump is a solid-state active heat pump which transfers heat from one side of the device to the other, with consumption of electrical energy, being dependent on the direction of the current. Such an instrument is known as a Peltier device, a Peltier heat pump, solid state refrigerator, or thermoelectric cooler (TEC). It can be used either for heating or for cooling, although in practice the main application is cooling. It can be invoked as a temperature controller that either heats or cools.

The TEC5V4A-D is an electronic module designed for driving TECs (Thermo-Electric Coolers) with high stability in regulating the object temperature, extreme energy efficiency.

The module provides interface components for users to configure the desired object temperature range, i.e. set-point temperature range; maximum voltage across TEC, i.e. maximum TEC voltage; and the compensation network. The compensation network compensates the astronomical order thermal load and thus stabilizes the temperature control loop.

The TEC5V4A-D comes with a high stability low noise 3.0V voltage references which can be utilized to setting the desired object temperature by using a POT (potentiometer) or a DAC (Digital to Analog Converter). When utilizing this reference for setting the set-point temperature, the set-point temperature error does not depend on this reference voltage.For more information, please visit our website:http://www.analogtechnologies.com/tec-controller.html

The minimum limited voltage of 5 common colors LED lights

The minimum limited voltage of 5 common colors LED lights_Manufacturer of Thermistors, Laser drivers, Resistor kits, Smt capcitor kits & Tec controllers//

The common specifications voltage of LED lights are 12V and 24V, and one team of 12V LED light consists of three pcs LEDs, while24VLED light is made up of six pcs LEDs. Once, some customer requested to reduce the power supply voltage, but here we need to notice that not all colors and all specifications of the LED lights can be used when the power supply voltage reduced, and itcannot be reduced unconditionally. In order to classifythevoltage of what kind of the LED lights can be reduced, first look at the driving voltage of the five common colors single piece LED.

    1.White LED:  3.0~3.3V

    2.Red LED: 1.8~2.2V

    3.Blue LED: 3.0~3.2V

    4.Green LED: 2.9~3.1V

    5.Yellow LED: 1.8~2.0V

The standard dc power supply voltage specifications that are available in the market are 6 V, 9 V, 12 V, 18 V, 24 V, then step-down specifications of LED lights must also be consistent with the above specifications, otherwise the power matching is also a problem.

    A.Using several kinds of common color LED as some examples to illustrate the minimum voltage limit of3 pcs LEDs group.

        1.White LEDs: According to the minimum driving voltage: 3*3.0=9V, if LED light’s power supply is 9V, and this LED light can’t be added a current-limit resistor. If LED lights from other groupsare broken, that will cause the current increase on this group LED light, which results in LED burning. But if adding limiting current resistor on this group LED light, it will be lower than the minimum LED driving voltage, and it will affect the luminous intensity and glowing effect of LED lamp. Therefore, the lowest voltage limit of white LED lights is 12V.

        2.Red LEDs: According to the minimum driving voltage of 1.8V: 3*1.8V=5.4V, then based on common power supply voltage specification, 6V is fine.As 6V-5.4V=0.6V, we can add 30 ohms current-limit resistor. So the minimum voltage limit of the red LED light is 6V.

        3.Blue LEDs: The minimum voltage limit ofthe blue LED lights is the same as that of the white LED lights,which is 12V.

        4.Green LEDs: According to the minimum driving voltage of 2.9V: 3*2.9V=8.7V, then based on the common power supply voltage specification, 9V is fine. 9V-8.7V=0.3V, we can also add 15 ohms current-limit resistor. So the minimum voltage limit of the green LED lights is 9V.

        5.Yellow LEDs: The minimum voltage limit of the yellow LED light is the same as that of the red LED light, which is 6V.

    B.The minimum voltage limit of Six pcs LEDs group:

        1.White LEDs: According to the minimum driving voltage: 6*3.0=18V, if LED light’s power supply is 18V, this LED light can’t be added a current-limit resistor. If LED lights from other groups are broken, that will cause the current crease on this group LED light, which results in LED burning. But if addingcurrent-limitresistor on this group LED light, it will be lower than the minimum LED driving voltage, and it will affect the luminous intensity and glowing effect of the LED lamp. Therefore, the lowest voltage limit of white LED lights is 24V.

        2.Red LEDs: According to the minimum driving voltage: 6*1.8V=10.8V, based on the common power supply specification, 12V is fine. As 12V-10.8V=1.2V, we can also add 60 ohms current-limit resistor. So the minimum voltage limit of red LED light is 12V.

        3.Blue LEDs: The minimum voltage limit of the blue LED light is the same as that of the red LED, which is 24V.

        4.Green LEDs: According to the minimum driving voltage: 6*2.9V=17.4V, then based on the common power supply voltage specification, 18V is fine. 18V-17.4V=0.6V, we can also add 30 ohms current-limit resistor. So the minimum limiting voltage of the green LED light is 18V.

        5.Yellow LEDs: The minimum limiting voltage of the yellow LED light is the same as that of the red LED light, which is 12V.For more information, please visit our website:http://www.analogtechnologies.com/product-LED-Related-Products.html

New Pakistan Distributor Joins Us!

New Pakistan Distributor Joins Us!_Manufacturer of Thermistors, Laser drivers, Resistor kits, Smt capcitor kits & Tec controllers//

The Connection from Pakistan becomes a new distributor of our company. Welcome!!

Till now, we have totally three global distributors worldwide and we are still looking forward to being joined by companies from many other countries, such as Australia, Austria, Belgium, Brazil, Canada, China, Cyprus, Denmark, England, Finland, France, Germany, Iceland, India, Israel, Italy, Korea, Malaysia, Netherlands, New Zealand, Northern Ireland, Norway, Republic of Ireland, Scotland, Singapore, Spain, Sweden, Switzerland, Taiwan, Thailand, U.K., United States of America, Vietnam, Wales…

If you love our products and like to promote our products in your country, please do not hesitate to email us or give us a call. Let’s work together!For more information, please visit our website:http://www.analogtechnologies.com/laserdriver.html

What are the requirements of Laser Diode Drive

What are the requirements of Laser Diode Drive_Manufacturer of Thermistors, Laser drivers, Resistor kits, Smt capcitor kits & Tec controllers//

When it comes to diode laser power supplies, there are certain things that need to be kept in mind to avoid any issue. Laser Power Supplies have some requirements as well that need to be kept in mind to avoid any problem. In this blog, we will come to know some main requirements of Laser Diode Drive. If you curious to know about it, you are at the right place.

Requirements of Laser Diode Drive:

1. Current regulation is one of the important aspects of laser power supplies. It is efficient enough to give an accurate result that can help you perform certain tasks without any fear. Optical power output of laser diode increases with the decrease in temperature. This ensures that you can perform the right task at the right point of time. This means without any optical feedback, laser diode switched on and can be easily adjusted as per the current room temperature. Current is set up once the laser diode has warmed up. It commonly blows out when it gets switched to the room temperature. There is no optical feedback as per the regulation.

2. Absolute current limiting. It comprises immunity to the power line transients along with those that may occur while power on and power off. There are certain parameters of several electronic parts such as ICs are hardly assigned while charging input power. Particular laser diode driver chips can be found with such requirements.

Analog Technologies offers some of the advanced and quality Laser Power Supplies. Those who are seeking them can review some products. When it comes to seeking electric items or parts, you have to be very attentive and review various things. This can give you a good idea for the selection process. The knowledge is always useful to get the right thing at the right point of time.For more information, please visit our website:http://www.analogtechnologies.com/laserdriver.html

Thermoelectric Cooler Controller Design Made Simpler

Thermoelectric Cooler Controller Design Made Simpler_Manufacturer of Thermistors, Laser drivers, Resistor kits, Smt capcitor kits & Tec controllers//

This article is from Photonics Magazine. TEC controller design experts from Analog Tehcnologies, Inc offer tips to lower the cost and simplify the design of the devices, and to increase their ease of use.

Thermoelectric cooler (TEC) controllers are becoming more prevalent in thermal management designs because they can drive a thermoelectric cooler to stabilize the temperature of laser diodes or passive components used in communications equipment.

TECs have several advantages for temperature regulation: high accuracy and stability, fast response time, a wide set-point temperature range, and a simple structural design with no moving parts. Also, they are small and lightweight, reliable, noise-free and environmentally friendly. However, when comparing with temperature regulation approaches based on heat sinks or compressors, for applications requiring especially high thermal power output, TECs may have certain shortcomings: low efficiency, low thermal power, high cost of both TECs and controllers, and complex controller designs.

Thermoelectric coolers (TECs) are highly accurate and stable for temperature control, with a wide set-point temperature range and a simple packaging design with no moving parts. They are small and light, highly reliable, noise-free and environmentally friendly. Here, a structural diagram of a TEC.

Cold/hot sides and +/- terminals

In 1834, French physicist Jean-Charles Athanase Peltier found that the junctions of dissimilar metals are heated or cooled depending upon the direction in which an electric current passes through them. This effect became the Peltier effect.

A TEC has two ceramic plates with Peltier elements sandwiched in between. Based on the Peltier effect, these elements produce heat and cold by injecting an electric current through them. All the Peltier elements are connected in series; the first and last are each connected to a separate wire terminal. The plate on which the two terminals are mounted is often called the hot-side plate or simply the hot side; the other side is designated the cold-side plate or the cold side. The two sides are symmetrical in terms of thermal functionality, but the thermal load of the side with the terminals is a little higher because of the wire leads.

A DC current is injected into the TEC through the two terminals, and this generates a temperature difference between the two plates: One plate becomes cooler, while the other side becomes warmer.

When the cold side cools down, the TEC terminal connecting the positive lead of the power supply is designated as the plus (+) terminal, or the positive lead of the TEC; the other is designated as the minus (-) terminal, or the negative lead. As the DC current reverses direction – i.e., flows out from the plus terminal – the cold side will heat up and the hot side cool down. Therefore, TECs can be used both for cooling down and heating up the thermal load.

TECs can’t “generate” cold; they only move heat from one side to the other. They “produce” heat more efficiently than cold under the same size or current conditions because not all of the electric energy of the DC current is used for removing the heat; some energy is consumed by the Peltier elements and converted into heat, which is conducted to the two sides of the TEC at the same time. This heat boosts the heating-up power of the TEC but makes the cooling-down function less efficient.For more information, please visit our website:http://www.analogtechnologies.com/thermistor.html

The Resistor Kit makes the usage of resistors convenient

The Resistor Kit makes the usage of resistors convenient_Manufacturer of Thermistors, Laser drivers, Resistor kits, Smt capcitor kits & Tec controllers//

Resistors can be kept in akit for the convenience of the user. There comes a lot of variety of resistor kit. One can choose one of the varieties for one’s convenience.One can select one of the resistor kits with many compartments with corresponding  value inside.These compartments make it convenient for the user to pick one of the parts that is necessary. The division of the kit makes the picking of the parts you need simpler.

The convenient resistor kits are good for perf boards.For advanced electronic needs, these are themost convenient for the beginners who has to fix resistors in perf boards.The material is heat resistant and stores the resistors in different labels with different values. It is the most convenient for usage in different electronic components.

The resistors are stored in the kit with different value which is the most convenientaspect of using this kit. As the values are written in the human readable format, one can easily select the parts from the kit. With different variety of resistor kit, there comes the kit with many enclosures.The enclosures are easy to operate. One can choose one of the convenient varietieswith enclosureto easily find out the resistors of different value.For more information, please visit our website:http://www.analogtechnologies.com/tec-controller.html

TEC Controllers

The principle of TEC control is called Peltier Effect, which was discovered by Jean Charles Athanase Peltier in 1834. Briefly speaking, it reveals that fact when a current is passed through a couple, a temperature difference is created between the two sides of the thermocouple. TEC (Thermo-Electric Cooler, or Peltier Cooler) is a semiconductor device which can cool down or heat up the temperature of a thermal load depending on the direction of the current going through the two terminals of the TEC. By using a TEC controller, the thermal load temperature can be regulated precisely by controlling the direction and magnitude of the current going through the TEC. TECA1-XV-XV-D series TEC controllers features high efficiency, high stability, high reliability and compact sizes. The maximum current is 2.5A. They are often used for controlling temperature in laser systems. Many of these TEC controllers work well with our TEC Modules, Thermistors and Thermally Conductive Epoxy. You can always find best quality TEC Controllers offered by Analog Technologies Inc., which are efficient, cost effective and long lasting. Analog Technologies offers good quality of TEC Controller at reasonable prices. I believe you can benefit a lot from our products. A number of TEC Controller is available to select so you have more choices.For more information, please visit our website:http://http://www.analogtechnologies.com/tec-controller.html

The Definition of Low Niose Amplifier

The Definition of Low Niose Amplifier_Manufacturer of Thermistors, Laser drivers, Resistor kits, Smt capcitor kits & Tec controllers

As it is known to all, some very low frequency noise (0.1Hz to 10Hz) can’t be measured by oscilloscope, so we design a circuit to amplify these low noises to make sure noise value can be common figures which has been given in amplifier datasheets. As this circuit designed to amplify the low frequency noise, we achieve this function ranging from a 0.1Hz second order high pass filter to a 10Hz forth order low pass filter. As the internal noise of amplifier will also influence the testing result, we will try to reduce itself noise coefficient to improve the output ratio of signal power vs. noise power.

Ideal amplifier noise coefficient is F = 1 (0 db), and its physical meaning is that the output ratio of signal power vs. noise power is equal to the input ratio of signal power vs. noise power. A well-designed low noise amplifier FN can reach < 3 db. When testing low noise figure, use temperature (Te) as amplifier noise performance metrics: Te = T0 (F – 1). Here, unit of noise coefficient and noise temperature are both kelvin (K) when it is under ambient temperature.

The signal that circuit received is very weak, so the low noise amplifier has to achieve the function of amplifying small signal. Besides, due to the influence of strong signal interference in the transmission path, the strength of the noise will change also. Therefore, the amplifier needs to have a large enough linear range and gain can be adjusted..For more information, please visit our website:http://www.analogtechnologies.com/thermistor.html

The Most Obvious Features of NTC Thermistors

NTC is short for Negative Temperate Coefficient. Resistance is varied with the temperature change, and its resistance will decrease when the temperature rise and vice-versa. For example, the resistance is 50kΩ when it is at 25℃, while the resistance may be only 40kΩ when it is at 50℃. It is theory on the technical level, hard to explain. However, there is an example in our life. It is much easier to understand. This feature of thermistors can be widely applied in real life. Absolutely, every family has at least one electric cooker. When the rice is done, the cooker will keep warm automatically. How does it work? That is, when the temperature gets high in the cooker, the resistance of the thermistor in the electric cooker will decrease. With current changing, the cooker will switch from heating state to keeping warm state automatically.For more information, please visit our website:http://www.analogtechnologies.com/thermistor.html

The Features of Laser Drivers

Analog Technologies Inc., a company established in 1997, focuses on designing high efficiency laser and TEC drivers/controllers, SMT resistor/capacitor/inductor kits, TEC modules, thermistors and other electronic products, has now become the world’s famous laser products manufacturer. All these products have been widely used in the production of electronic appliances, military, integrated circuits, computers and other fields. We have customers all over the world. Some of our customers in the USA include: NASA, US Army, Air Force, TI, Intel and we also have customer with military projects in other countries. Analog Technologies has very strong research abilities, and this R&D team is ready to work on your special requests. Analog Technologies offers good quality laser diode drivers with high stability, low noise, and/or high power efficiency. These are some of the functions diode laser drivers: laser current setting and monitoring, control loop good indication, driving mode indication (for dual mode versions), stand-by, and shut down. Due to their high efficiencies, most of our laser drivers/controllers can work without heat sinks. In addition, our laser drivers/controllers have complete metal shielding, which presents the laser drivers/controllers and other electronics from interfering from each other. We have a full line of laser drivers/controllers: low noise low current, high efficiency medium current, AC input high current high efficiency; high current short pulsed. Every product from Analog Technologies is strictly examined before it is put on to the market. Analog Technologies is with the hope and confidence to produce the world’s class products. In order to give satisfying services to international customers, our company has qualified technicians and engineers providing in-time and effective pre-sale, sale and after-sale services. Analog Technologies focus on advanced analog technology and electronic products for more than seventeen years and we are your most reliable supplier. We believe we can use our technology and experience to work with our customers and help them achieve the success. A number of diode laser drivers are available to select so you have more choices. Please visit our website to find the products that suit you most.For more information, please visit our website:http://www.analogtechnologies.com/laserdriver.html