PowerShotNoise is a handy toolkit for optics and power engineers. It helps you plan Faraday rotators and isolators so light goes one way. You can budget photodiode noise and see expected SNR with clear inputs. It guides LIDAR receiver gain so weak and strong echoes both fit the ADC. For lines and towers, it checks shielding angles and rolling-sphere safety gaps. It reviews temporary overvoltage levels and compares them with gear limits. You can size fast VAR support (STATCOM/SVC) to hold bus voltage steady. It also suggests simple filter tunes, safer capacitor switching, and secure relay settings.