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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. The arrangement can then act as a replacement of the discrete resistors in the circuit. The resistors are usually combined together within the device so as to provide the required resistance. The ideal resistor material for making resistor networks is the thick film technology. It is preferred because of its favorable characteristics that include good capacity to handle power, high resistance output per unit area as well as its lower cost when compared to other materials. Highlighted below are some of the benefits of incorporating resistor networks into circuit designs.
Resistor networks have a wide range of applications. The electronics industry requires resistor network for many different applications. The network resistors usually have better qualities than the single discrete resistors. Commercial and military, as well as medical and industrial devices mainly make use of resistors in network. They are also used in transistors, sensors and many other devices that require resistors. Different gadgets require that the network resistors be designed in different ways to mirror their unique properties. A good example is the resistor networks for sensor which require value matching as an important consideration while others do not.
They are capable of saving space on the circuit board. Vertical mounting of single line module networks of resistors is possible. The arrangement takes up less space on the circuit board when compared to mounting of discrete resistors on the board. You can also adopt a high packing density of tracks and gaps because of the less space required for mounting.
Heat dissipation from the circuit is improved when resistor networks are used. 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. The resistors are mounted in a vertical position on the board, meaning that there is space for the free movement of air amidst the components, a phenomenon that may not be achievable with discrete resistors.
Value matching is possible. Value matching is a function of numerous factors such as the coefficient of temperature resistance, size of the resistors as well as the fluctuations of the load across the resistor. Its crucial to ensure a similarity of properties for the individual resistors that make up the network. This proximity or similarity in size and other characteristics makes value matching easier in networks than in single resistors.