[Video]. Circuit Symbols and Circuit Diagrams. (2020). Liacos Educational Media.(NSCC W# and password required)
Learn the icons for ammeter, voltmeter, SPDT switches, diodes, LEDs, resistors, capacitors, fuses, motors, speakers, and wires. In complicated circuits, wires cross over each other; use a bridge symbol. Circuit diagrams need to clearly show where the electrical current flows.