Patent ID: 6515437
Filing Date: 2003-02-04
Classification: H05B

Abstract:
An illumination system comprising:a power supply circuit having an input for connecting to a voltage source of low fundamental frequency for providing an output voltage which is alternating with fundamental frequency between approximately 15 KHz and 50 KHz and with RMS voltage between approximately 12V and 24V, and a pair of conductors coupled to an output of the power supply circuit, and a second power supply circuit for use with a high intensity gas discharge lamp coupled to the pair of conductors, the second power supply unit comprising: a pair of input terminals (IN1, IN2) for connecting to said conductors, a ballast constituted by an inductor having an inductance of order 1 mH coupled to the input terminals for stabilizing a magnitude of said current, and a pair of output terminals (OUT1, OUT2) coupled to the ballast for connecting an HID lamp thereto.