Abstract: A power saving charger comprises a switch circuit having an input end connected to an AC current source for turning on or turn off AC current; a switch driving circuit having an output end connected to the switch circuit for outputting signals to turn on or turn off the AC current of the switch circuit; a charging circuit connected to the output end of the switch circuit for converting AC current to DC current so as to charge to a battery of an external load; and a charge detection circuit connected to a charge output end of the charging circuit and a signal output end of the charging circuit for detection the completeness of the charge and detection of the existence of the load; and a signal output end of the charge detection circuit being connected to an signal input end of the switch driving circuit.

Abstract: A water outlet device includes a housing member, a temperature detecting device having a receptacle attached to the outlet portion of the housing member, a sensor disposed in the receptacle for detecting a temperature of the water flowing through the receptacle, and an indicating device attached to the housing members and coupled to the sensor for indicating the water temperature and for preventing the users from being scaled by the hot water. One or more solar cells or an energizing device may be powered by water or manually and may be used for energizing the indicating device or the sensor without the typical batteries that will pollute our environment.

Abstract: A vehicle distance warning device includes a signal emitting device and a signal receiving device coupled to a processing device for emitting and receiving distance detecting signals in order to detect the distance between the moving vehicles, the processing device may calculate the distance between the moving vehicles with the received signals and the distance may be indicated by the warning light device or a warning sound device in order to indicate whether the moving vehicles are moving too close to each other or not and for allowing the vehicle drivers to make the responding or suitable actions and to prevent car accidents from being occurred.

Abstract: A vehicle travelling data recording device includes a digital video recorder, a vehicle travelling speed recorder, a vehicle travelling condition recorder and a removable hard disk drive. Synchronously recording the vehicle travelling condition, the vehicle travelling speed and the signal structure and operation condition can achieve the object of reducing the vehicle travelling strife.