Patent ID: 8907571

Claim:
A charging/lamp driving circuit arranged to receive a charge/discharge device (ESD 100 ) when the charge/discharge device is installed in the charging/lamp driving circuit by a user, comprising: at least one lamp (L 100 ); a transformer device (TR 101 ); a rectifier device (BR 100 ) for rectifying an output of a secondary side of the transformer device (TR 100 ) to supply DC power to the lamp (L 100 ) and to the charge/discharge device (ESD 100 ) when the charge/discharge device has been installed by the user; an output diode (CR 100 ); and a charge control device (BC 100 ) parallel connected to the output diode (CR 100 ), wherein when said charge/discharge device is installed in said charging/lamp driving circuit, a negative output end of said charge/discharge device is connected to a negative DC power output end of the rectifier device (BR 100 ) and a positive output end of said charge/discharge device is connected through the output diode (CR 100 ) to both the positive DC power output end of the rectifier device and to the lamp (L 100 ), and wherein, depending on whether the charge/discharge device (ESD 100 ) has been installed by the user in the charging/lamp driving circuit and on a charging state of the charge/discharge device (ESD 100 ), said charging/lamp driving circuit is arranged to drive the lamp by: (a) simultaneously and in parallel supplying power to the lamp from the rectifier device (BR 100 ) and, through the output diode (CR 100 ), from the charge/discharge device (ESD 100 ); (b) supplying power to the lamp exclusively from the charge/discharge device (ESD 100 ) through the output diode (CR 100 ), and (c) supplying power to the lamp exclusively from the rectifier device (BR 100 ) while the rectifier device (BR 100 ) charges the charge/discharge device through the charge control device (BC 100 ), or the charge/discharge device has not been installed in the charging/lamp driving circuit by the user, and further comprising a lamp control device (CD 100 ) to control or modulate a supply of power to the at least one lamp (L 100 ) in response to control signals from a central control unit (CCU 100 ) or light detector device (S 100 ), and wherein the simultaneous and parallel supply of power to the at least one lamp (L 100 ) from the charge/discharge device (ESD 100 ) and the rectifier device (BR 100 ) enables selection of a lower capacity charge/discharge device and lower capacity components of the rectifier device (BR 100 ) relative to larger capacities that would be required if there were no parallel supply of power and power were supplied exclusively by one of the charge/discharge (ESD 100 ) or the rectifier device (BR 100 ).