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Through Hole Resistors

Through hole resistors are electrical components used to regulate the flow of electrical current in a circuit. They are one of the most common types of resistors, and are used in a wide range of applications. The term “through hole” is used to describe a resistor that is mounted on the printed circuit board (PCB), usually through a hole in the PCB frame, and soldered to the board.

Through hole resistors come in many different values and types. The value of a through hole resistor is usually expressed in ohms, and is determined by the sizing of the physical resistor body. Common resistor values range from 1 ohm to 10 kilo ohms (Kohm). There are also many specialty resistors with higher values and different types.

Through hole resistors are usually constructed from a metal body and an insulation material, known as a substrate. The metal body is usually made of carbon, metal oxide, or ceramic material, and the substrate is typically ceramic, glass, epoxy, or a combination of these materials. Inside the resistor, there is a series of resistors, which create the resistance effect. This is where the electricity passes through when the circuit is closed.

There are many different applications that require the use of through hole resistors. Many high power and safety circuits require resistors to ensure that the current does not overheat the circuit and cause damage or failure. Resistors can also be used to regulate current, protect circuits from short circuits or drops in voltage, and act as signal flow control elements.

On most through hole resistors, the resistance is determined by the size of the physical body. The larger the resistor, the more resistance it will offer to the current. Smaller resistors have less resistance and are used to limit the current in various applications. Generally, through hole resistors have a higher capacity and lower resistance than surface mount resistors, making them better for high current applications.

The working principle of through hole resistors is relatively simple. In a closed circuit, electric current flows through the component. The resistance of the resistor determines how much current is allowed to flow. The resistance is determined by the size of the resistor body and the material it is made from. For this reason, some resistors are labeled with their resistance value, such as 100Ω, 1KΩ, and so on.

In conclusion, through hole resistors are an essential element in any electrical circuit. They are relatively easy to use and can be found in a wide range of applications. By understanding the properties and working principle of through hole resistors, it is easy to see why they are so important.

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