Abstract: The present invention provides a system and method of automatic cycling control for HID lamps, comprising a device for switching power to the HID lamp, a first timer operatively connected to the power switching device, and a second timer operatively connected to the power switching device, wherein the first timer starts timing when the power switching device powers the HID lamp and signals the power switching device to extinguish the HID lamp when the first timer counts to an operating time setpoint, and the second timer starts timing when the power switching device extinguishes the HID lamp and signals the power switching device to power the HID lamp when the second timer counts to a cooling time setpoint. If the lamp is turned off and on before the operating time setpoint is met, the system will reset and begin a new operating timing period.

Abstract: The present invention provides a system and method of automatic cycling control for HID lamps, comprising means for switching power to the HID lamp, a first timer operatively connected to the power switching means, and a second timer operatively connected to the power switching means, wherein the first timer starts timing when the power switching means powers the HID lamp and signals the power switching means to extinguish the HID lamp when the first timer counts to an operating time setpoint, and the second timer starts timing when the power switching means extinguishes the HID lamp and signals the power switching means to power the HID lamp when the second timer counts to a cooling time setpoint. If the lamp is turned off and on before the operating time setpoint is met, the system will reset and begin a new operating timing period.

Abstract: A system and method of automatic cycling control for HID lamps, comprising a switching device for switching power to the HID lamp, a first timer operatively connected to the power switching device, and a second timer operatively connected to the power switching device, wherein the first timer starts timing when the power switching device powers the HID lamp and signals the power switching device to extinguish the HID lamp when the first timer counts to an operating time setpoint, and the second timer starts timing when the power switching device extinguishes the HID lamp and signals the power switching device to power the HID lamp when the second timer counts to a cooling time setpoint. If the lamp is turned off and on before the operating time setpoint is met, the system will reset and begin a new operating timing period.

Abstract: Control circuitry for controlling the output power of an electronic ballast system having a power supply branch circuit having power lines comprising a line voltage line and a common line, and a ballast stage having (i) inputs connected to the power lines for providing power to the lamp, (ii) internal power control feedback circuitry that defines a feedback loop for controlling the amount of power applied to the lamp, and (iii) a control signal input for receiving a control signal that affects operation the internal power control feedback circuitry and the level of power outputted by the ballast stage. The control circuitry comprises a first circuit having an input for connection to one of the power lines. The first circuit generates a control signal for input into the control input of the ballast stage.

Abstract: The present invention provides a system and method of automatic cycling control for HID lamps, comprising means for switching power to the HID lamp, a first timer operatively connected to the power switching means, and a second timer operatively connected to the power switching means, wherein the first timer starts timing when the power switching means powers the HID lamp and signals the power switching means to extinguish the HID lamp when the first timer counts to an operating time setpoint, and the second timer starts timing when the power switching means extinguishes the HID lamp and signals the power switching means to power the HID lamp when the second timer counts to a cooling time setpoint. If the lamp is turned off and on before the operating time setpoint is met, the system will reset and begin a new operating timing period.