JPH03194451A - Cell analyzing apparatus - Google Patents

Cell analyzing apparatus

Info

Publication number
JPH03194451A
JPH03194451A JP33384789A JP33384789A JPH03194451A JP H03194451 A JPH03194451 A JP H03194451A JP 33384789 A JP33384789 A JP 33384789A JP 33384789 A JP33384789 A JP 33384789A JP H03194451 A JPH03194451 A JP H03194451A
Authority
JP
Japan
Prior art keywords
circuit
signal
value
regulating
gain control
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP33384789A
Inventor
Shinichi Sakuraba
Original Assignee
Hitachi Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP33384789A priority Critical patent/JPH03194451A/en
Publication of JPH03194451A publication Critical patent/JPH03194451A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE: To form a cytogram which is simple in operation and is exact by automatically regulating the level of a detection signal to an optimum level just before measurement operations are carried out for each of the samples.
CONSTITUTION: A regulating circuit 15 has a gain control circuit, an averaging circuit 18 and a comparing and regulating circuit 19. The gain control circuit can control the value of the amplification gain for the signal pulses to be inputted thereto. The average signal level value of the inputted signal pulses is obtd. in the circuit 18. The circuit 19 compares the average signal level value and the set value which is preset as an optimum range. This circuit 19 applies the feedback signal to the gain control circuit to allow the average signal level value to satisfy the set value. The regulating means 15 regulates the output signal of a photoelectric converting means 11 to regulate the output of the circuit 18 to an adequate signal level just before the actual measurement operation is made. The operation is simplified in this way and the exact cytogram is formed.
COPYRIGHT: (C)1991,JPO&Japio
JP33384789A 1989-12-22 1989-12-22 Cell analyzing apparatus Pending JPH03194451A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP33384789A JPH03194451A (en) 1989-12-22 1989-12-22 Cell analyzing apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP33384789A JPH03194451A (en) 1989-12-22 1989-12-22 Cell analyzing apparatus

Publications (1)

Publication Number Publication Date
JPH03194451A true JPH03194451A (en) 1991-08-26

Family

ID=18270613

Family Applications (1)

Application Number Title Priority Date Filing Date
JP33384789A Pending JPH03194451A (en) 1989-12-22 1989-12-22 Cell analyzing apparatus

Country Status (1)

Country Link
JP (1) JPH03194451A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0743299A (en) * 1993-07-27 1995-02-14 Yamato Seisakusho:Kk Micropowder particle monitor
US6611698B1 (en) 1998-10-13 2003-08-26 Hitachi, Ltd. Optical measuring instrument

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0743299A (en) * 1993-07-27 1995-02-14 Yamato Seisakusho:Kk Micropowder particle monitor
US6611698B1 (en) 1998-10-13 2003-08-26 Hitachi, Ltd. Optical measuring instrument

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