20J25R

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Through Hole Resistors encompass a wide range of devices and can be classified based on their application field and working principle. The key components used with Through Hole Resistors are the carbon resistors, metal film resistors, and the wirewound resistors. Each of these different types of resistors can have different electrical characteristics, depending on the type of material used.

One of the most commonly used Through Hole Resistors is the carbon resistor. Carbon resistors consist of carbon film or powder, which is then baked onto an insulator like ceramic, mica, or glass. Carbon resistors are usually used as voltage dividers or current limiting devices. A voltage divider is a simple circuit that divides the total voltage applied across it into two separate outputs. The ratio of output to input is simply determined by the resistance of the resistors used. On the contrary, current limiting devices are used to restrict the total current flowing in an electrical circuit.

Metal film resistors use a stainless steel alloy sheet in order to control the resistance of the resistor. The metal film is then deposited onto a ceramic substrate, which helps to maintain the precision of the resistance value. Metal film resistors offer the advantages of high ripple, low temperature coefficient and low noise. This type of resistor is commonly used in audio, television, and other types of electronic equipment.

The last major type of Through Hole Resistors is the wirewound resistor. Wirewound resistors are similar to metal film resistors but may also contain some Isolation to aid in the protection and/or safety of the device. This type of resistor also offers the advantages of high power and current rating, but they may also suffer from high noise, temperature coefficient, and ripple.

There are also a couple of specialized Through Hole Resistors that are used in certain applications. For example, voltage-variable resistors can be used to sense the changing level of voltage in an electrical circuit. They operate by having an insulator and resistive material wound in a wire-like configuration to provide a variable resistance when voltage is applied. Additionally, unidirectional resistors are used in circuit protection applications. They are designed to allow current to flow in one direction while limiting current in the opposite direction. This type of resistor works by using a thin coating material, combining it with an insulating material, and then winding it onto a resistive core.

In conclusion, Through Hole Resistors can be classified based on their application and working principle. Commonly used Through Hole Resistors include carbon resistors, metal film resistors, and wirewound resistors. Each of these different types of resistors can offer varying electrical characteristics, depending on the resistor material used. Additionally, there are several specialized Through Hole Resistors that have been developed to suit specific applications.

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