Answer :
The type of resistor that is commonly used in automotive circuits is wirewound resistors.
The wirewound resistors are resistors whose resistive material is a metallic wire that is either made up of alloy or is pure and is coiled up in a spiral-like form around an insulating core made up of ceramic or plastic to form the final resistor.Why are wirewound resistors preferred for use in automotive circuits?Wirewound resistors are preferred for use in automotive circuits because of their following features:
Power handling capability: Wirewound resistors are capable of dissipating a high amount of power. The resistive wire of these resistors is capable of withstanding high temperatures without getting damaged. For example, these resistors can handle up to 1W or more depending on the design.Cost-effective: These resistors are readily available in the market, and their cost is relatively low. As a result, they are affordable for use in automotive circuits.
Wide tolerance: These resistors have a higher tolerance value than other resistors. They usually have a tolerance of 5% or less. This makes them ideal for use in automotive circuits as the tolerance of components in automotive circuits needs to be high.
Resistance stability: Wirewound resistors have a high level of resistance stability over a wide range of temperatures. This property makes them ideal for use in automotive circuits where the temperature can fluctuate widely.
Furthermore, wirewound resistors can withstand high levels of vibrations, shocks, and impacts that are common in automotive applications. This makes them the most preferred type of resistor for use in automotive circuits, as they can withstand these harsh conditions that other resistors may not survive.
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