Patent ID: 6229287
Filing Date: 2001-05-08
Classification: H02J

Abstract:
A battery charger for charging one or more chargeable batteries, said charger comprising:a DC power source;a current control means connected between the DC power source and said one or more chargeable batteries; the current control means comprising:a current mode control means for generating DC current at higher voltage than the voltage provided by said DC power source;the said current mode control means including means for converting said DC charging current to AC, means for producing higher voltage AC current spikes and means for rectifying said AC current back to DC current at said higher voltage;means for providing a variable voltage control signal to a pulse width modulator for producing a variable frequency range from said higher voltage DC current;timer means for controlling a switch for producing periodic pulses of said DC current having said variable frequency range;isolator means for receiving said DC current including periodic pulses of variable frequency current from said current control means and directing said received DC current into a plurality of outputs to said chargeable batteries.