An element set including one capacitor, one coil, one thyristor, and one regeneration diode is provided for three parallel-connected flash lamps. The one thyristor collectively effects on-off control of the current flowing through the three corresponding parallel-connected flash lamps. The thyristor is able to suppress a tail current flowing through the flash lamps during flash irradiation. Since a smaller number of element sets than the number of parallel-connected flash lamps are provided, the number of elements provided in a heat treatment apparatus is reduced as compared to the case in which individual element sets are provided for the flash lamps. This suppresses the increase in apparatus costs and reduces the installation space for the elements.

An illumination apparatus that emits light from a light source using accumulated electric energy and that performs wireless communication with another illumination apparatus via a communication unit includes a capacitor that accumulates the electric energy used to emit light from the light source, a detection unit that detects a charge state of the capacitor, and a notification unit that performs notification indicating information indicating that the illumination apparatus is in a flash available state and notification indicating information indicating that both the illumination apparatus and the other illumination apparatus are in a flash available state in a distinguishable manner in accordance with information on the other illumination apparatus received by the communication unit and a result of the detection performed by the detection unit.

An adjustable power supply circuit for a treatment and/or disinfection system using high intensity broad-spectrum pulsed light that includes a capacitor power supply, a capacitor bank connected to the capacitor power supply and a high intensity light source, a trigger circuit including a trigger coil connected to the high intensity light source, and a controller. The capacitor bank includes a plurality of capacitors connected in series and/or in parallel, where the capacitor bank is adjustable to adjust an amount of energy supplied to the high intensity light source. The controller receives input data and controls charging of the capacitor bank by the at least one capacitor power supply to power the high intensity light source at a desired voltage and triggers the trigger circuit to turn on the light source at the desired voltage to strobe pulsed light with an amount of fluence to treat contaminants.

An adjustable power supply circuit for a treatment and/or disinfection system using high intensity broad-spectrum pulsed light that includes a capacitor power supply, a capacitor bank connected to the capacitor power supply and a high intensity light source, a trigger circuit including a trigger coil connected to the high intensity light source, and a controller. The capacitor bank includes a plurality of capacitors connected in series and/or in parallel, where the capacitor bank is adjustable to adjust an amount of energy supplied to the high intensity light source. The controller receives input data and controls charging of the capacitor bank by the at least one capacitor power supply to power the high intensity light source at a desired voltage and triggers the trigger circuit to turn on the light source at the desired voltage to strobe pulsed light with an amount of fluence to treat contaminants.