BR7403572D0 - Processo e aparelho para modificar proporcionalmente a amplitude de pulsos de particulas pela utilizacao de uma abertura de varredura de particulas - Google Patents

Processo e aparelho para modificar proporcionalmente a amplitude de pulsos de particulas pela utilizacao de uma abertura de varredura de particulas

Info

Publication number
BR7403572D0
BR7403572D0 BR3572/74A BR357274A BR7403572D0 BR 7403572 D0 BR7403572 D0 BR 7403572D0 BR 3572/74 A BR3572/74 A BR 3572/74A BR 357274 A BR357274 A BR 357274A BR 7403572 D0 BR7403572 D0 BR 7403572D0
Authority
BR
Brazil
Prior art keywords
spark
scan opening
particulate
pulse
particle scan
Prior art date
Application number
BR3572/74A
Other languages
English (en)
Portuguese (pt)
Inventor
W Coulter
E Doty
Original Assignee
W Coulter
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 W Coulter filed Critical W Coulter
Publication of BR7403572D0 publication Critical patent/BR7403572D0/pt

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)
  • Measurement Of Current Or Voltage (AREA)
  • Apparatus Associated With Microorganisms And Enzymes (AREA)
  • Secondary Cells (AREA)
BR3572/74A 1973-05-07 1974-05-02 Processo e aparelho para modificar proporcionalmente a amplitude de pulsos de particulas pela utilizacao de uma abertura de varredura de particulas BR7403572D0 (pt)

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
BR7403572D0 true BR7403572D0 (pt) 1974-11-19

Family

ID=23407430

Family Applications (1)

Application Number Title Priority Date Filing Date
BR3572/74A BR7403572D0 (pt) 1973-05-07 1974-05-02 Processo e aparelho para modificar proporcionalmente a amplitude de pulsos de particulas pela utilizacao de uma abertura de varredura de particulas

Country Status (12)

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

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
SE398556B (sv) 1977-12-27
IL44750A (en) 1976-06-30
IL44750A0 (en) 1974-07-31
US3863159A (en) 1975-01-28
JPS5016583A (enExample) 1975-02-21
AU6869674A (en) 1975-11-13
NL7405876A (enExample) 1974-11-11
DE2421265A1 (de) 1974-11-28
IT1011341B (it) 1977-01-20
GB1442901A (en) 1976-07-14
CH585902A5 (enExample) 1977-03-15
FR2229058A1 (enExample) 1974-12-06
FR2229058B1 (enExample) 1977-10-14
CA999050A (en) 1976-10-26

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