Method and device for driving a gas discharge lamp

Description is used to make the gas discharge lamps (2), specifically an HID light, but more specifically, MH lamps, method of darken. Under the rated power of the lamp with the reversal of the current alpha Inom IL= DC current, α is equal to 1 and less than 1. Current IL decreases, but lights still work on reversing DC current, until the alpha reaches a predetermined value of beta. Then, under the lights in the DC current, and further reduce the current size. Now have the potential to achieve lower levels of dimming.