GB1093461A - Device for counting particles of determined minimum length - Google Patents
Device for counting particles of determined minimum lengthInfo
- Publication number
- GB1093461A GB1093461A GB481265A GB481265A GB1093461A GB 1093461 A GB1093461 A GB 1093461A GB 481265 A GB481265 A GB 481265A GB 481265 A GB481265 A GB 481265A GB 1093461 A GB1093461 A GB 1093461A
- Authority
- GB
- United Kingdom
- Prior art keywords
- pulses
- zener diode
- feb
- integrated
- minimum length
- 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
Links
- 239000002245 particle Substances 0.000 title 1
- 230000035945 sensitivity Effects 0.000 abstract 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/36—Textiles
- G01N33/362—Material before processing, e.g. bulk cotton or wool
-
- 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
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/02—Measuring characteristics of individual pulses, e.g. deviation from pulse flatness, rise time or duration
- G01R29/027—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values
- G01R29/0273—Indicating that a pulse characteristic is either above or below a predetermined value or within or beyond a predetermined range of values the pulse characteristic being duration, i.e. width (indicating that frequency of pulses is above or below a certain limit)
Landscapes
- Chemical & Material Sciences (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Pathology (AREA)
- Immunology (AREA)
- Dispersion Chemistry (AREA)
- Textile Engineering (AREA)
- Food Science & Technology (AREA)
- Medicinal Chemistry (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Paper (AREA)
- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US34823964A | 1964-02-28 | 1964-02-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1093461A true GB1093461A (en) | 1967-12-06 |
Family
ID=23367170
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB481265A Expired GB1093461A (en) | 1964-02-28 | 1965-02-04 | Device for counting particles of determined minimum length |
Country Status (5)
| Country | Link |
|---|---|
| BE (1) | BE660355A (fr) |
| CH (1) | CH445163A (fr) |
| DE (1) | DE1598377B2 (fr) |
| FR (1) | FR1425239A (fr) |
| GB (1) | GB1093461A (fr) |
-
1965
- 1965-02-04 GB GB481265A patent/GB1093461A/en not_active Expired
- 1965-02-17 CH CH220665A patent/CH445163A/de unknown
- 1965-02-17 DE DE1965E0028707 patent/DE1598377B2/de active Granted
- 1965-02-26 BE BE660355A patent/BE660355A/xx unknown
- 1965-02-26 FR FR7088A patent/FR1425239A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE1598377A1 (de) | 1972-02-10 |
| DE1598377B2 (de) | 1972-11-16 |
| BE660355A (fr) | 1965-06-16 |
| FR1425239A (fr) | 1966-01-14 |
| CH445163A (de) | 1967-10-15 |
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