CA999050A - Particle analyzing method and apparatus having pulse amplitude modification for particle volume linearization - Google Patents

Particle analyzing method and apparatus having pulse amplitude modification for particle volume linearization

Info

Publication number
CA999050A
CA999050A CA199,090A CA199090A CA999050A CA 999050 A CA999050 A CA 999050A CA 199090 A CA199090 A CA 199090A CA 999050 A CA999050 A CA 999050A
Authority
CA
Canada
Prior art keywords
particle
linearization
pulse amplitude
analyzing method
amplitude modification
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
CA199,090A
Other languages
English (en)
Inventor
Edward N. Doty
Wallace H. Coulter
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 CA999050A publication Critical patent/CA999050A/en
Expired legal-status Critical Current

Links

Classifications

    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K5/00—Manipulating of pulses not covered by one of the other main groups of this subclass
    • H03K5/01—Shaping pulses
    • 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)
  • Physics & Mathematics (AREA)
  • Analytical Chemistry (AREA)
  • Dispersion Chemistry (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Nonlinear Science (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Secondary Cells (AREA)
  • Measurement Of Current Or Voltage (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
CA199,090A 1973-05-07 1974-05-06 Particle analyzing method and apparatus having pulse amplitude modification for particle volume linearization Expired CA999050A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US357888A US3863159A (en) 1973-05-07 1973-05-07 Particle analyzing method and apparatus having pulse amplitude modification for particle volume linearization

Publications (1)

Publication Number Publication Date
CA999050A true CA999050A (en) 1976-10-26

Family

ID=23407430

Family Applications (1)

Application Number Title Priority Date Filing Date
CA199,090A Expired CA999050A (en) 1973-05-07 1974-05-06 Particle analyzing method and apparatus having pulse amplitude modification for particle volume linearization

Country Status (12)

Country Link
US (1) US3863159A (de)
JP (1) JPS5016583A (de)
BR (1) BR7403572D0 (de)
CA (1) CA999050A (de)
CH (1) CH585902A5 (de)
DE (1) DE2421265A1 (de)
FR (1) FR2229058B1 (de)
GB (1) GB1442901A (de)
IL (1) IL44750A (de)
IT (1) IT1011341B (de)
NL (1) NL7405876A (de)
SE (1) SE398556B (de)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4139823A (en) * 1977-07-18 1979-02-13 Winters Paul N Electrical energy transmission network
US4420720A (en) * 1981-06-29 1983-12-13 Coulter Electronics, Inc. Field focused particle sensing zone
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
JP2001259909A (ja) * 2000-03-13 2001-09-25 Pascal Kk チャック装置
US8023592B2 (en) * 2005-08-24 2011-09-20 Beckman Coulter, Inc. Method and apparatus for finding center amplitude of particle size-representative pulses produced by aperture based sizing system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2996624A (en) * 1959-08-11 1961-08-15 Victor R Mumma Method for stretching photometer pulses for accurate measurement of pulse height
US3095541A (en) * 1959-09-22 1963-06-25 North American Aviation Inc Detector having desired waveform detected within specified amplitude range and as function of time
FR1471219A (fr) * 1966-01-18 1967-03-03 Csf Dispositif digital de filtrage pour l'exploitation des informations obtenues par détection électromagnétique
US3489921A (en) * 1967-01-25 1970-01-13 Gen Electric Peak detecting circuit with comparison means producing a peak indicative signal
NL140682B (nl) * 1967-02-28 1973-12-17 Ibm Nederland Detectieschakeling voor analoge pulsen.

Also Published As

Publication number Publication date
NL7405876A (de) 1974-11-11
IL44750A (en) 1976-06-30
GB1442901A (en) 1976-07-14
SE398556B (sv) 1977-12-27
JPS5016583A (de) 1975-02-21
FR2229058B1 (de) 1977-10-14
BR7403572D0 (pt) 1974-11-19
IT1011341B (it) 1977-01-20
FR2229058A1 (de) 1974-12-06
US3863159A (en) 1975-01-28
IL44750A0 (en) 1974-07-31
AU6869674A (en) 1975-11-13
DE2421265A1 (de) 1974-11-28
CH585902A5 (de) 1977-03-15

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