Altium Circuit Investigator

Use this skill to understand Altium designs without guessing. It complements altium-schematic-reader: first collect structured net/component data, then prove circuit meaning with topology, local labels, PCB evidence, and coverage checks.

Prime Directive

Do not state a circuit function as fact until it is supported by evidence. A net name, part value, or symbol shape is only a clue. Confirm with:

• exact netlist endpoints: designator, pin, pin name, net
• full symbol pin coverage, including NC/unconnected pins
• local schematic text/labels/screenshots
• topology through passives, transistors, optocouplers, relays, sensors, and connectors
• PCB pads, side, placement, and net names
• datasheet or measurement when polarity or behavior is not proven

Use evidence levels: