Title:
光検出器の大電流監視回路
Document Type and Number:
Japanese Patent JP2004509586
Kind Code:
A
Abstract:
A large current watchdog circuit for a photodetector, the circuit including a current sensing device responsive to current flowing through the photodetector and a variable impedance transistor responsive to the current sensing device and the photodetector which increases in resistance in response to current flowing though the photodetector to protect the photodetector and any front end sensing electronics from high current levels.
Inventors:
Deshamp, Pierre, Dee.
Trottier, Claude, J.
Trottier, Claude, J.
Application Number:
JP2002527023A
Publication Date:
March 25, 2004
Filing Date:
September 12, 2001
Export Citation:
Assignee:
Perkinermer ink
International Classes:
H01J40/14; H01J43/30; H01L31/02; H01L31/107; H01L31/10; H02H3/00; H02H9/00; H02H9/02; H03G11/00; (IPC1-7): H02H9/02; H01L31/10; H01L31/107
Attorney, Agent or Firm:
Atsushi Ichito
Reijiro Ichihigashi
Reijiro Ichihigashi