Which component is not part of a typical aircraft electrical system?

In a typical aircraft electrical system, the primary components include power sources such as batteries and alternators, voltage regulators to manage the output, and master switches and relays to control the electrical flow. The 14-volt alternator is responsible for generating electrical power, while the voltage regulator ensures that the voltage remains within specified limits to prevent damage to the electrical components.

The fuel strainer, on the other hand, is not part of the electrical system; it is involved in the fuel system. Its role is to filter impurities from the fuel before it reaches the engine. Understanding the distinction between these systems is crucial for recognizing which components are essential for an aircraft's electrical functionality and which are part of other systems, such as fuel, hydraulic, or control systems.