Patent ID: 7015650
Filing Date: 2006-03-21
Classification: F21K,F21Y,H05B,Y02B

Abstract:
1. A circuit device for providing energy to at least one electrical component, said circuit device comprising: a positive contact; a negative contact; an inductor; a diode having a cathode end and an anode end; a first component contact for electrical connection to a cathode end of an electrical component; a second component contact for electrical connection to an anode end of an electrical component; a switch; and a control device, a first end of said inductor being electrically connected to said positive contact; a second end of said inductor being electrically connected to said anode end of said diode; a first end of said switch being electrically connected to a junction between said second end of said inductor and said anode end of said diode; a second end of said switch being electrically connected to said negative contact; said second component contact being electrically connected to said cathode end of said diode; said first component contact being electrically connected to a junction between said positive contact and said first end of said inductor; said control device having a current sensing terminal and an output terminal, said current sensing terminal being electrically connected to a junction between said second end of said switch and said negative contact, said output terminal being electrically connected to said switch, said control device causing said switch to break electrical connection across said switch when voltage at said current sensing terminal exceeds a threshold value, and causing said switch to provide electrical connection across said switch after a non-conduction period has elapsed following said causing said switch to break electrical connection.