Resistors can provide for a number of means, often being employed for reducing current flow, adjusting signal levels, dividing voltages, terminating transmission lines, and much more. They are also quite common to aircraft construction, allowing for electrical systems to be managed for safety and efficiency. In this blog, we will discuss some of the main types of aircraft resistors that are used and how they are coded, allowing you to best understand their benefit to aviation applications.


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Within the many electrical systems that we rely on every day, circuit breakers and electrical fuses protect connected electrical equipment and parts from damage. Electricity can be extremely volatile, and faults such as short circuits and overloads can easily damage sensitive components if left uncontrolled. Because of this, having circuit breakers and fuses is extremely important for safety. In this blog, we will discuss how circuit breakers and fuses operate, as well as the common reasons that cause them to trip and blow.


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In electronics and electrical engineering, fuses are electrical safety devices that are designed to provide overcurrent protection of an electrical circuit. The most essential component is a metal strip or wire that melts when too much current flows through it, and therefore interrupts the current. Fuses are sacrificial devices, meaning that once a fuse has operated, it must be replaced or rewired.


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The electrical systems within an aircraft are extensive. Steps need to be taken to ensure that the system doesn’t overload causing a power outage on an aircraft. Resistors are electrical components that oppose the flow of electrical current. They are by nature, passive components that only reduce voltage rather than increase them. Wirewound resistors are cylindrical components with resistive wire wrapped around them. The rod is typically made of ceramic or fiberglass and the wire is usually made out of an alloy such as nichrome. An exterior casing insulates the wirewound resistors to help block any heat coming from the circuit interruption.


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