Ground Connections Ground Connections – Used for common circuit return connections.
Ground Connections (Cont) Types Earth Chassis Common
Schematic Diagram Drafting Guidelines (Cont.) Suggested Steps (Cont.) Review/Revise the rough draft – Signal flow – Components: Symbols Polarities Values – Connections – Notes Create Final Draft
Drafting Suggestions Allow for balance, and spacing considerations when placing individual components. Allow space for reference designations when placing individual components.
Schematic Diagram Construction Steps Layout inputs on left, and outputs on right. Sketch main components (Transistors, I.C.s), then Sketch support components (Resistors, capacitors), and finally Sketch coupling components (Capacitors, diodes) Sketch supply connections and input/output connections. Sketch horizontal and vertical interconnection lines. – Use minimal bends/dog legs. – Use minimal crossovers. – Use uniform spacing.
Schematic Diagram Construction Steps (Cont.) Sketch reference designations (required) – Use standard reference designations. – Label to the right or above component. Sketch Component values (optional) Nominal rating Tolerance Power rating Review, revise, finalize