How to choose an aluminum case power resistor and what is an aluminum case resistor? What are the ch

Usually, if the RXLG aluminum case resistor series is used with a frequency converter, then there will be a guide manual with the selection on it, or ask your frequency converter integrator.

Then you need to choose the size limit you need for the resistor, the withstand voltage requirements, and so on. 0769 82054258 can provide products for you.

Other applications are as follows: aCorrectly select the resistance value and error of the resistor:

Resistance selection: The principle is that the difference between the nominal resistance of the resistor used and the resistance of the required resistor is as small as possible.

Error selection: The error of the resistor required for the time constant RC circuit is as small as possible. Generally, you can choose less than 5%. For the decoupling circuit, the feedback circuit, the filter circuit, and the load circuit do not have high error requirements. 10%-20% resistors are optional.

b.Pay attention to the limit parameters of the resistor:

Rated voltage: When the actual voltage exceeds the rated voltage, the resistor will be damaged by breakdown, even if the power requirements are met.

Rated power: The rated power of the selected resistor should be more than twice the actual power to ensure the reliability of the resistor's long-term operation in the circuit.

c.General purpose resistors are preferred:

There are many types of general-purpose resistors, complete specifications, large production batches, and there is room for selection in the resistance range, appearance shape, and volume size, which is convenient for procurement and maintenance.

d.According to the characteristics of the circuit, it is selected

High-frequency circuit: the smaller the distribution parameters, the better, and high-frequency resistors such as metal film resistors and metal oxide film resistors should be selected.

Low-frequency circuits: winding resistors, carbon film resistors are applicable.

Power amplification circuit, bias circuit, sampling circuit: the circuit has high requirements for stability, and a resistor with a small temperature coefficient should be selected.

Decoupling circuit, filter circuit: There is no strict requirement for resistance value change, and it is suitable for any type of resistor.

Aluminum shell resistance is a square wire winding resistance (steel wire winding resistance), also commonly known as cement electric group, using nickel, chromium, iron and other large resistance alloy resistance wire wound on the alkaline heat-resistant porcelain, plus heat-resistant, moisture-resistant, non-corrosive material protection, and then put the winding resistor body into the porcelain frame, with special non-flammable heat-resistant cement filling and sealing. The difference between the non-flammable coating wirewound resistor is that the outer coating is changed to silicecone resin or non-combustible coating. They have the advantages of precise resistance, low noise, good heat dissipation and can withstand high power consumption, and are mostly used in the amplifier power stage.

The disadvantage is that the resistance value is not large, the cost is high, and it is not suitable for use in high-frequency circuits due to the presence of inductance.

The function of the aluminum shell is to dissipate heat.

The aluminum shell resistor shell is made of aluminum alloy, with heat dissipation grooves on the surface, small size, large power, high temperature resistance and strong overload capacity;

High-power load resistors or thermistors for testing, in order to make them dissipate heat or conduct heat well, they are encapsulated in an aluminum shell with Kovar materials;

One of them is mostly used in current limiting protection circuits. Second, it is mostly used in measurement and control circuits. It is characterized by rapid heat conduction and sensitive response;

It is suitable for voltage division, current limiting and load of AC, DC and pulse circuits with heat sink mounting.

Shenzhen Jiashunxin Electronics **** provides.

Manager Cao: 13 6001 6 931 6.

The aluminum case resistor is actually the same as the aluminum case capacitor. The aluminum shell has good resistance to high pressure. Resistor or capacitor cores are generally purchased in-house.

However, the cost will be high, and it will be applied to high-voltage circuits.

The aluminum shell resistor shell is made of aluminum dry stool alloy, with heat dissipation grooves on the surface, small size, large power, high temperature resistance and strong overload capacity;

High-power load resistors or thermistors for testing, in order to make them dissipate heat or conduct heat well, they are encapsulated in an aluminum shell with Kovar materials;

One of them is mostly used in current limiting protection circuits. Second, it is mostly used in measurement and control circuits. It is characterized by rapid heat conduction and sensitive response;

It is suitable for voltage division, current limiting and load of AC and DC and pulse circuits with heat sink installation mode.

Shenzhen Jiashunxin Electronics **** provides.

Manager Cao: 13 6001 6 931 6.

To use the simplest analogy, the left hand and the right hand, with a fan in one hand blowing in the middle and no fan in the other.

The aluminum shell has good heat dissipation performance, and can dissipate heat in time when the socks are loaded, so that the resistance temperature does not reach a very high mu pure, and within a certain range, the resistance value will not change, and the cement resistance heat dissipation will be worse. In the process of making, the aluminum shell resistor is also equipped with special cement materials, the difference is that the outer bread is aluminum, and the other is porcelain, and there is no difference in the resistance value.

Aluminum shell resistor, the shell is made of aluminum alloy (** aluminum shell), the surface has a heat dissipation groove, small size, large power, high temperature resistance, strong overload capacity, weather resistance, high precision, standard low inductive resistance, high stability, strong structure, its flexibility is good multiple combination options, conducive to mechanical protection, easy to install and use.

Power supply, inverter, servo and high requirements for harsh environment use, long life. Resistance tolerances are 10%, 5%, 3%, 2%, 1%, silver wheel years. And high-power models can be assembled as required.

It can also be made according to the needs of customers, and can be combined into a series of high-power or high-power resistance boxes.

Aluminum shell resistor manufacturers square wirewound resistors (wirewound resistors), commonly known as cement electrical groups, are made of nickel, chromium, alloy resistance wires wound iron and other resistant materials with alkaline heat-resistant porcelain parts, external heat, humidity, non-corrosion and protective materials, again ceramic encapsulation, especially non-flame cement packing sealing. Their advantages are resistance accuracy, low noise, good heat dissipation, and may consume a lot of power, mainly in the power level part of the amplifier. The disadvantage is that the resistance is not large and the cost is high, but it is not suitable for using inductors in high-frequency circuits.

Like other resistors, resistance (usually represented by "r"), aluminum resistance and other resistance indicate the magnitude of the conductor's resistance to the current in physics. The greater the resistance of a conductor, the greater the resistance of the conductor to the current. Different conductors, the resistance is generally different, and the resistance is a characteristic of the conductor itself.

The resistance will cause a change in the flow of electrons, and the smaller the resistance, the greater the flow of electrons, and vice versa. The resistance value of the aluminum shell resistance element is generally related to the temperature, material, length, and cross-sectional area, and the physical quantity that measures the temperature of the aluminum shell resistance is the temperature coefficient, which is defined as the percentage of the resistance value change when the temperature rises by 1. Bending Jane.

No inductive wound resistor as standard.

High stability, strong structure End cap: stainless steel.

Core: Alumina or ceramic.

Elements: Copper and nickel synthetic, nickel-chromium synthetic or copper.

Standard terminals: 5 50W tin end, 100 250W wire end. Power range: 5 250W with 6 options to choose from.