Patent ID: 7605360
Filing Date: 2009-10-20
Classification: G06F

Abstract:
1. A power supply system for a green laser indicating pen, comprising: a computer having an USB receptacle which is connected to a current source in the computer; a USB plug being connected to the USB receptacle; a USB transmission line for connecting the USB plug to a transformer so that transfer the current from the computer to a predetermined current for supplying to the following stage; a chargeable battery connected to the transformer for receiving current from the computer so as to charge the chargeable battery; a voltage level detector connected to the chargeable battery for comparing the voltage of the voltage level detector with a reference voltage in the voltage level detector; an indicator light connected to the voltage level detector for displaying the voltage state with different colors; if the voltage from the chargeable battery being matched to a required voltage, the current from the chargeable battery being supplied to a laser source for emitting green laser light form a optical hole; and a power switch being connected between the transformer and the laser source; as the power switch being actuated, the power from the transformer can be directly transferred to the laser source.