Power supply controlling apparatus of light cure unit used in dental office

摘要

The present invention relates to a power unit of a dental curing light for a first rectifying means for rectifying the AC voltage to be input; First switching means for switching the voltage and current to be in phase with the monitor voltage and current output from the first rectifying means; One end of the primary winding has a first transformer to the first connection and the rectifying means and the other end is connected to the first switching means passes to the primary power in accordance with the opening and closing of the first switching means to the secondary side; Second rectifying means for rectifying the voltage delivered to the secondary side of the first transformer; Second switching means for switching the first current output from the second rectifying means control the voltage across the lamp; Receiving the signal from the feedback means for feeding back the detected current flowing through the lamp control means for controlling said second switching means; It means for applying a clock signal to said control means for controlling the switching time of the second switching means; Is connected to both ends of the lamp is configured to include a bit yigeunayi means for supplying an initial lighting voltage during the switch to the on state in the lamp OFF state.