This circuit can be used to inspect narrow spaces, such as the inside of a CPU, displays, PCB modules and other electronic devices. The light source is a thin pencil tube with a sharp tip and super bright white LED. The standard meaning of circuit diagram is that circuit diagram is a graphical depiction of an electrical circuit that has been simplified. A pictorial circuit diagram employs simple pictures of components, whereas a schematic diagram uses simplified standard symbols to represent the circuit's components; both styles illustrate the connections between the devices, including power and signal connections.
