公开(公告)号：US3611042A

公开(公告)日：1971-10-05

申请号：US3611042D

申请日：1970-02-02

Applicant: BECKMAN INSTRUMENTS INC

Inventor： BORONKAY ATTILA DENES

IPC: G01J1/16 ,  H02H7/20 ,  H02H3/20

CPC classification number: G01J1/16 ,  H02H7/20

Abstract: A radiant energy analyzer is disclosed in which a feedback loop is included to vary an electrical bias to a radiant energy detector in response to selected conditions associated with an electrical signal generated by the detector. The electrical signal is directed to a selective detector where predetermined portions of the signal are detected to develop a control signal. A time constant compensating circuit is connected to receive the control signal from the selective detector. An amplitude modulated oscillator is connected to the time constant compensating circuit and in turn to a rectifier circuit which provides electrical bias for the radiant energy detector in response to the oscillator signal amplitude. An overload protection circuit is provided to connect the signal from the radiant energy detector to the oscillator when the signal exceeds a predetermined threshold. The time constant compensating circuit provides compensation for unequal rise and fall time constants associated with the rectifier circuit so as to include the rectifier circuit within the feedback loop.

公开(公告)号：US3459481A

公开(公告)日：1969-08-05

申请号：US3459481D

申请日：1965-06-29

Applicant: BECKMAN INSTRUMENTS INC

Inventor： BORONKAY ATTILA DENES

IPC: G01J3/04 ,  G01J3/42

CPC classification number: G01J3/42 ,  G01J3/04