CA965843A - Noise discriminating circuitry and method for electronic particle study apparatus - Google Patents

Noise discriminating circuitry and method for electronic particle study apparatus

Info

Publication number
CA965843A
CA965843A CA147,502A CA147502A CA965843A CA 965843 A CA965843 A CA 965843A CA 147502 A CA147502 A CA 147502A CA 965843 A CA965843 A CA 965843A
Authority
CA
Canada
Prior art keywords
electronic particle
study apparatus
noise discriminating
particle study
discriminating circuitry
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.)
Expired
Application number
CA147,502A
Other languages
English (en)
Other versions
CA147502S (en
Inventor
William A. Claps
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Application granted granted Critical
Publication of CA965843A publication Critical patent/CA965843A/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N15/00—Investigating characteristics of particles; Investigating permeability, pore-volume or surface-area of porous materials
    • G01N15/10—Investigating individual particles
    • G01N15/1031—Investigating individual particles by measuring electrical or magnetic effects
    • G01N15/12—Investigating individual particles by measuring electrical or magnetic effects by observing changes in resistance or impedance across apertures when traversed by individual particles, e.g. by using the Coulter principle
    • G01N15/131—Details
    • G01N15/132—Circuits

Landscapes

  • Chemical & Material Sciences (AREA)
  • Biochemistry (AREA)
  • General Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Other Investigation Or Analysis Of Materials By Electrical Means (AREA)
  • Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
  • Arrangements For Transmission Of Measured Signals (AREA)
  • Investigating Or Analysing Biological Materials (AREA)
CA147,502A 1971-07-22 1972-07-19 Noise discriminating circuitry and method for electronic particle study apparatus Expired CA965843A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US16527671A 1971-07-22 1971-07-22

Publications (1)

Publication Number Publication Date
CA965843A true CA965843A (en) 1975-04-08

Family

ID=22598222

Family Applications (1)

Application Number Title Priority Date Filing Date
CA147,502A Expired CA965843A (en) 1971-07-22 1972-07-19 Noise discriminating circuitry and method for electronic particle study apparatus

Country Status (6)

Country Link
US (1) US3781674A (de)
JP (1) JPS539559B1 (de)
CA (1) CA965843A (de)
DE (1) DE2235366C3 (de)
FR (1) FR2146819A5 (de)
GB (1) GB1394182A (de)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4263508A (en) * 1979-04-20 1981-04-21 Research Corporation Pulse edge measurement for determining particle dimensional characteristics
US4633169A (en) * 1983-07-08 1986-12-30 Kontron Holding Ag Blood particle analyzer
GB8321242D0 (en) * 1983-08-05 1983-09-07 Orbec Ltd Test apparatus
ATE110467T1 (de) * 1987-04-27 1994-09-15 Preikschat F K Vorrichtung und verfahren zur untersuchung von teilchen.
US5426501A (en) * 1993-01-06 1995-06-20 Laser Sensor Technology, Inc. Apparatus and method for particle analysis
US6111398A (en) * 1997-07-03 2000-08-29 Coulter International Corp. Method and apparatus for sensing and characterizing particles
US6175227B1 (en) 1997-07-03 2001-01-16 Coulter International Corp. Potential-sensing method and apparatus for sensing and characterizing particles by the Coulter principle
US20080001635A1 (en) * 2004-12-28 2008-01-03 Makoto Miyake Data Receiving Device and Data Receiving Method

Family Cites Families (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3259842A (en) * 1959-08-19 1966-07-05 Coulter Electronics Particle analyzing device
US3271671A (en) * 1961-04-06 1966-09-06 Coulter Electronics Particle analyzing device
US3502973A (en) * 1966-05-23 1970-03-24 Coulter Electronics Collating apparatus for pairs of electrical pulses produced by particle analyzing apparatus
US3517321A (en) * 1967-02-17 1970-06-23 Burroughs Corp Rise time discriminator
US3594726A (en) * 1968-09-30 1971-07-20 Nester & Faust Mfg Corp Programmed slope and amplitude responsive system
US3548206A (en) * 1969-01-14 1970-12-15 Royco Instr Inc Noise rejection circuits for particle counters
US3617904A (en) * 1969-06-05 1971-11-02 Digitronics Corp Noise insensitive peak detector
US3599016A (en) * 1969-07-22 1971-08-10 Gen Electric Automatic reset circuit
US3701029A (en) * 1970-10-27 1972-10-24 Coulter Electronics Axial trajectory sensor having gating means controlled by pulse duration measuring for electronic particle study apparatus and method

Also Published As

Publication number Publication date
FR2146819A5 (de) 1973-03-02
JPS539559B1 (de) 1978-04-06
DE2235366A1 (de) 1973-02-01
US3781674A (en) 1973-12-25
DE2235366B2 (de) 1978-01-19
DE2235366C3 (de) 1978-09-21
GB1394182A (en) 1975-05-14

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