Schematic diagramsLook back through the earlier chapters of this book and observe the schematic dia-grams. These are all simple examples of how professionals would draw the circuits.There is no inscrutable gobbledygook to put in to make them into the sorts of circuitmaps that the most brilliant engineer would need. The diagrams you have worked withare exactly like the ones that the engineer would use to depict these circuits.Schematic diagrams674-4Nine common schematic symbols. A: Incandescent lamp.B: Capacitor. C: Air-core coil. D: Iron-core coil. E: Chassisground. F: Earth ground. G: Source of alternating current (ac).H: Pair of terminals. I: Specialized component or device.