A precharge driver for light emitting devices with an associated capacitance, the precharge driver including a driver coupled to a light emitting device so as to supply a substantially square wave of current to the light emitting device and a precharge circuit coupled to the driver so as to activate the driver to supply a pulse of current to the associated capacitance of the light emitting device to rapidly charge the associated capacitance at an initial portion of the square wave of current, whereby a resultant substantially square wave of current is applied to the light emitting device.