AU462873B2 - Particle pulse analyzing apparatus employing linear amplification and logarithmic conversion - Google Patents

Particle pulse analyzing apparatus employing linear amplification and logarithmic conversion

Info

Publication number
AU462873B2
AU462873B2 AU36537/71A AU3653771A AU462873B2 AU 462873 B2 AU462873 B2 AU 462873B2 AU 36537/71 A AU36537/71 A AU 36537/71A AU 3653771 A AU3653771 A AU 3653771A AU 462873 B2 AU462873 B2 AU 462873B2
Authority
AU
Australia
Prior art keywords
analyzing apparatus
apparatus employing
linear amplification
logarithmic conversion
particle pulse
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
AU36537/71A
Other versions
AU3653771A (en
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
Publication of AU3653771A publication Critical patent/AU3653771A/en
Application granted granted Critical
Publication of AU462873B2 publication Critical patent/AU462873B2/en
Expired legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06G—ANALOGUE COMPUTERS
    • G06G7/00—Devices in which the computing operation is performed by varying electric or magnetic quantities
    • G06G7/12—Arrangements for performing computing operations, e.g. operational amplifiers
    • G06G7/24—Arrangements for performing computing operations, e.g. operational amplifiers for evaluating logarithmic or exponential functions, e.g. hyperbolic functions
    • 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

  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Mathematical Physics (AREA)
  • Chemical & Material Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Dispersion Chemistry (AREA)
  • Computer Hardware Design (AREA)
  • Software Systems (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Measurement Of Current Or Voltage (AREA)
AU36537/71A 1970-04-15 1971-12-06 Particle pulse analyzing apparatus employing linear amplification and logarithmic conversion Expired AU462873B2 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US2870370A 1970-04-15 1970-04-15

Publications (2)

Publication Number Publication Date
AU3653771A AU3653771A (en) 1973-06-14
AU462873B2 true AU462873B2 (en) 1975-07-10

Family

ID=21844951

Family Applications (1)

Application Number Title Priority Date Filing Date
AU36537/71A Expired AU462873B2 (en) 1970-04-15 1971-12-06 Particle pulse analyzing apparatus employing linear amplification and logarithmic conversion

Country Status (2)

Country Link
US (1) US3626166A (en)
AU (1) AU462873B2 (en)

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4953894A (en) * 1972-09-22 1974-05-25
US3953792A (en) * 1974-04-26 1976-04-27 Nasa Particulate and aerosol detector
US3936666A (en) * 1974-09-16 1976-02-03 Coulter Electronics, Inc. Apparatus for measuring a particle size dividing one of the mass or particle number of a particulate system into predetermined fractions
US4220499A (en) * 1978-10-04 1980-09-02 Westvaco Corporation Method for determining the relative quantity of shives in a stream of fibrous particles
US4225385A (en) * 1979-01-15 1980-09-30 Westvaco Corporation Shive ratio analyzer
US4471297A (en) * 1982-09-27 1984-09-11 Particle Data, Inc. Multi-sample particle analysis apparatus and method
JPH0738002B2 (en) * 1986-08-19 1995-04-26 パイオニア株式会社 Digital level display
JP5182859B2 (en) * 2007-01-29 2013-04-17 株式会社ステップテクニカ Evaluation apparatus and evaluation system

Family Cites Families (13)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237028A (en) * 1963-02-21 1966-02-22 James F Gibbons Logarithmic transfer circuit
US3252007A (en) * 1963-10-03 1966-05-17 Bell Telephone Labor Inc Stabilized non-linear feedback amplifier
US3369128A (en) * 1964-02-10 1968-02-13 Nexus Res Lab Inc Logarithmic function generator
US3345502A (en) * 1964-08-14 1967-10-03 Robert H Berg Pulse analyzer computer
US3417263A (en) * 1965-03-18 1968-12-17 Ansitron Inc Logarithmic amplifier
US3387222A (en) * 1965-07-01 1968-06-04 Ibm Adaptive threshold signal detector with noise suppression
US3448289A (en) * 1966-05-20 1969-06-03 Us Navy Logarthmic amplifier
US3449556A (en) * 1966-12-19 1969-06-10 Phillips Petroleum Co Analog computer for determining the proportion of one response to a sum of responses
US3524074A (en) * 1967-01-06 1970-08-11 Us Air Force Wide band logarithmic amplifier
US3502959A (en) * 1968-01-29 1970-03-24 Spectral Dynamics Corp Electronic logarithm converter
US3571618A (en) * 1968-07-23 1971-03-23 Us Navy Video logarithmic amplifier
US3532868A (en) * 1968-07-24 1970-10-06 Electronic Associates Log multiplier with logarithmic function generator connected in feedback loop of operational amplifier
US3514635A (en) * 1968-09-18 1970-05-26 Reliance Electric Co Analog computer feedback limiter circuit

Also Published As

Publication number Publication date
AU3653771A (en) 1973-06-14
US3626166A (en) 1971-12-07

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