Patent ID: 7253565
Filing Date: 2007-08-07
Classification: G09G,H05B

Abstract:
1. An apparatus for supplying power comprising: a switching section for controlling an output of a direct current voltage source inputted from external; a power transforming section for converting the direct current voltage source from the switching section into an alternating current voltage source and transforming the alternating current voltage source; a control section for outputting a switching signal so as to control an output of a constant current supplied to a lamp unit in response to a dimming signal inputted from an external; a sensing section for sensing variation of the alternating current voltage source supplied to the lamp unit, the sensing section wirelessly connected to the power transforming section; and a detecting section for comparing a sensing signal provided from the sensing section with a predetermined reference signal to output a detecting signal to the control section, thereby maintaining the constant current to be supplied to the lamp unit.