Patent ID: 8327764

Claim:
A pyroelectronic header ( 1 ) including an electronic circuit ( 2 ) for at least controlling the firing of the header by sending a current into an electrothermal bridge ( 4 ), the electronic circuit receiving orders from a firing line to produce commands, the header moreover including at least an electrical shunting means, wherein the electrical shunting means ( 7 ) is active and arranged parallel to the bridge ( 4 ), the electrical shunting means being controlled via commands between a first state and a second state, wherein when the electrical shunting means is in said first state the firing of the header is prevented by by-passing through the electrical shunting means the current of the bridge and when the electrical shunting means in said second state the electronic circuit controls firing of the header, wherein said first state is a first electric resistance closed state of the electrical shunting means and said second state is a second electric resistance open state of the electrical shunting means, the first electric resistance being less than the second electric resistance, and wherein the bridge, in a closed state, only sees a voltage ranging between zero volt and Rheader x Io header volts, Rheader being the resistance of the header and Io header the maximum non-firing intensity of the header.