List Circuit Diagrams. A straight line represents the wire. Switches are shown as dotted rectangles.
Complete list of circuit diagram symbols wires. Web pages with original circuits and descriptions. The function of the switches can be.
Super mixer with microphone input amplifier including a pcb layout.
When three or more lines touch each other or cross each other and a node is placed at the intersection this represents the lines or wires being electrically connected at that point. If you follow the circuit diagram from one side of the cell to the other. I have compiled this list of online resources that offer free electronic circuits. The circuits include free schematics and many of them also include explanations on how the circuit works and pcb layout.