Introduction
Different electrical components are designed to accomplish different tasks. Some components, such as capacitors and inductors, store energy while other components, such as resistors, impede the flow of current. The latter component is known as a contact resistance and plays an important role in electrical systems.
Definition
A contact resistance is an electrical component that makes up the contact point between two components. It is a type of resistor that is meant to reduce the current flow between the two components by creating electrical resistance. This component is particularly important in electrical systems that utilize a lot of components in order to make them less prone to electrical imbalances and to reduce heat build-up.
How it Works
A contact resistance works by creating a conductive medium between the two components. This medium has a specific resistance which is determined by the material and size of the contact resistance. The contact resistance then reduces the flow of current through the circuit by the amount of resistance it creates.
Types
There are two main types of contact resistance: mechanical and electrical. Mechanical contact resistance is the most common type and is achieved by the use of metal or carbon brushes which are pushed up against the two components to be connected. The metal or carbon brushes provide a high amount of contact resistance which is beneficial in reducing heat build-up and electrical imbalances. Electrical contact resistance is less common but can be utilized in certain applications such as high power electrical systems. Electrical contact resistances are generally more expensive as they require specialized components.
Benefits
Contact resistances provide several benefits to any electrical system. In addition to reducing heat build-up and creating electrical stability, contact resistances also reduce electrical shock hazards. Contact resistances are also important for protecting the components from short circuiting and provide a reliable electrical connection.
Conclusion
Contact resistances are an essential component in any electrical system. This component helps to reduce heat build-up and electrical imbalances as well as creating a reliable electrical connection. Contact resistances are also important for creating a safer electrical environment, as they reduce the risk of shock hazards. When selecting contact resistances, it is important to ensure that the material and size are suitable for the application they are being used in.
