What symbol indicates a DC power source in TPC schematics?

The symbol that indicates a DC power source in TPC schematics is represented by two horizontal lines of varying lengths. This design consists of a long line and a short line, where the longer line signifies the positive terminal, and the shorter line represents the negative terminal of the DC power source. This distinct representation helps in quickly identifying the source of direct current in an electrical circuit, providing clarity to the schematic design and facilitating easier understanding by those interpreting the drawing.

The other symbol options do not correspond to a DC power source. For instance, the circular symbol with a plus sign is typically associated with a battery, while the triangle pointing downwards may represent different components but not specifically a DC power source. The straight line with a break is often used to indicate a connection or a break in a conductor rather than a power source itself. Understanding these symbols and their specific meanings is crucial for anyone working with TPC schematics.