Patent ID: 6608452
Filing Date: 2003-08-19
Classification: H05B,Y10S

Abstract:
A microprocessor controlled xenon power supply for providing DC electrical power to a xenon bulb comprising:a first DC power supply having a first output; at least a first current path comprising: a first input for receiving power from said first output; an inductor; a controllable switch having a switch input; and a second output providing a DC operating voltage to the xenon bulb; a current sensor for measuring the electrical current flowing through said second output; and a microprocessor including: a second input in communication with said current sensor for reading the measured electrical current flowing through said second output; a third input for reading said DC operating voltage at said second output; a pulse width modulator having an adjustable pulse width modulated output, said pulse width modulated output in electrical communication with said switch input such that when said pulse width modulated output is in a first binary state, said controllable switch will conduct electricity and when said pulse width modulator output is in a second binary state, said controllable switch will not conduct electricity, wherein said microprocessor adjusts said pulse width modulated output in response to the current read at said second input and the voltage read at said third input to supply substantially constant electrical power to the xenon bulb.