A well prepared schematic begins with and returns to the:

A well-prepared schematic typically begins with and returns to the power source, as this represents the starting point of any electrical circuit. The power source, whether it is a battery, power supply, or generator, is fundamental because it establishes the flow of electricity needed to power the circuit.

In schematic design, the primary goal is to illustrate how various components are powered and interconnected. By starting with the power source, the schematic clearly shows where the energy originates and how it is distributed throughout the circuit. This approach not only aids in troubleshooting and analysis but also ensures clarity in how the electrical system operates.

Returning to the power source at the end of the schematic signifies the completion of the circuit and reinforces the concept of a closed loop, which is essential for the flow of electricity. This clarity helps both engineers and technicians understand the relationship between various components and ensures that they have a comprehensive view of the entire electrical system.