Abstract: A system for testing a solar panel includes an electrical power supply, an imaging device, and a computing device. The electrical power supply is configured to couple to a solar panel and supply an electrical current at least one cell of the solar panel, thereby inducing electroluminescence in the at least one cell. The imaging device is configured to measure the electroluminescence of the at least one cell. The computing device is coupled to the imaging device, the computing device configured to determine a defect in the at least one cell based on a measurement of the electroluminescence of the at least one cell.

Abstract: A portable induction heating system which utilizes a broadband high frequency high-power, low output impedance power generator formed from switching MOSFET devices. A voltage-controlled oscillator (VCO) or microprocessor-controlled signal generator drives a power output stage under feedback control so as to effectuate resonance at a high frequency in an induction coil assembly connected to the power generator. The power generator is operable with a switching regulator that can supply a fixed DC voltage, e.g., 12 to 48 V or a variable setpoint. The induction coil assembly includes a capacitive circuit portion connected to a conductive coil that can couple magnetic field to a susceptor. A microcontroller is provided for inputting operating parameters such as power, frequency, duty cycle and duration, and is operable to auto-tune the VCO output under feedback control by sweeping frequency at startup as well as by controlling drift during operation under a changing load.