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Reasons Why Resistor Networks Are Preferred for Designing Electrical Circuits
When a set of individual resistors are arranged in such a way that they can function as a single component, such as arrangement is referred to as a resistor network. They function as a unit as opposed to using single and separate resistors. The resistors are usually combined together within the device so as to provide the required resistance. Thick film technology is usually as a material preferred for constructing resistor networks. The reason why it is favored is because it has better qualities that include its high resistance measured per unit area, high power handling capacity as well as low cots when likened to other materials. The following are some of the benefits associated with resistor networks in circuit design.
There are numerous different applications for resistor networks. The electronics industry requires resistor network for many different applications. The network resistors usually have better qualities than the single discrete resistors. Some of the devices that incorporate such networks of resistors include medical, commercial, military as well as industrial devices and machineries. They are incorporated into sensors, transistors, and various other devices. The way the networks are designed for each application is different, depending on the unique features of the device. A good example is the resistor networks for sensor which require value matching as an important consideration while others do not.
Space can be saved on the circuit board by using resistor networks. When thick film resistors are arranged into a network, they are constructed in single in-line modules vertically. This kind of design takes up considerably less space on the circuit board as compared to the single discrete resistors when mounted directly to the board. Greater density of packing and mounting the resistors can therefore be used due to limited
space taken up on the board.
There is improved efficiency of dissipating heat in the circuit. Heat dissipation is a major function of the resistors in an electrical circuit. Their arrangement on the circuit board should therefore be in such a way that it’s possible to achieve the maximum possible heat dissipation from the circuit. The resistor network arrangement is the most ideal arrangement to achieve the maximum heat dissipation possible. This is because they are normally mounted vertically on the board, allowing the air to flow more freely as compared to the discrete resistors.
Value matching is possible. This is because it is dependent on several factors such as temperature coefficient of resistance, changes in the resistor load as well as the sizes of resistors themselves. Its crucial to ensure a similarity of properties for the individual resistors that make up the network. Value matching can, therefore, be achieved in a network of resistors because the individual components are similar in characteristics.