GB1331369A – Malfunction detection circuit blocking transmission of signals when the difference exceeds a predetermined value
– Google Patents
GB1331369A – Malfunction detection circuit blocking transmission of signals when the difference exceeds a predetermined value
– Google Patents
Malfunction detection circuit blocking transmission of signals when the difference exceeds a predetermined value
Info
Publication number
GB1331369A
GB1331369A
GB2626571*A
GB2626571A
GB1331369A
GB 1331369 A
GB1331369 A
GB 1331369A
GB 2626571 A
GB2626571 A
GB 2626571A
GB 1331369 A
GB1331369 A
GB 1331369A
Authority
GB
United Kingdom
Prior art keywords
signals
predetermined value
detection circuit
difference exceeds
difference
Prior art date
1970-04-09
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
GB2626571*A
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.)
Coulter Electronics Ltd
Coulter Electronics Inc
Original Assignee
Coulter Electronics Ltd
Coulter Electronics Inc
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.)
1970-04-09
Filing date
1971-04-19
Publication date
1973-09-26
1971-04-19
Application filed by Coulter Electronics Ltd, Coulter Electronics Inc
filed
Critical
Coulter Electronics Ltd
1973-09-26
Publication of GB1331369A
publication
Critical
patent/GB1331369A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
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
H03K5/22—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral
H03K5/24—Circuits having more than one input and one output for comparing pulses or pulse trains with each other according to input signal characteristics, e.g. slope, integral the characteristic being amplitude
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
G01N15/12—Coulter-counters
G01N15/1209—Details
G01N15/1227—Circuits
Abstract
1331369 Particle analysis COULTER ELECTRONICS Ltd 19 April 1971 [9 April 1970] 26265/71 Heading G1N [Also in Division H3] The signals from two parallel channels of a redundant system in a particle analyser are blocked if the difference between the two signals exceeds a given fraction of the mean value of the two. Signals derived from two mean corpuscular volume meters MCV1 and MCV2 are fed to an averaging circuit 48 to produce the mean value of two at 55. A fraction of this value is derived from a potentiometer circuit 59 and applied as a threshold value to a circuit 34 which receives from 31 the absolute value of the difference between these signals. If the difference exceeds the fraction the gates 42 and 43 are blocked.
GB2626571*A
1970-04-09
1971-04-19
Malfunction detection circuit blocking transmission of signals when the difference exceeds a predetermined value
Expired
GB1331369A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
US2700770A
1970-04-09
1970-04-09
Publications (1)
Publication Number
Publication Date
GB1331369A
true
GB1331369A
(en)
1973-09-26
Family
ID=21835124
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB2626571*A
Expired
GB1331369A
(en)
1970-04-09
1971-04-19
Malfunction detection circuit blocking transmission of signals when the difference exceeds a predetermined value
Country Status (11)
Country
Link
US
(1)
US3678382A
(en)
JP
(1)
JPS519631B1
(en)
CA
(1)
CA934060A
(en)
CH
(1)
CH543096A
(en)
DE
(1)
DE2116595C3
(en)
FR
(1)
FR2085947B1
(en)
GB
(1)
GB1331369A
(en)
IL
(1)
IL36473A
(en)
NL
(1)
NL7104504A
(en)
SE
(1)
SE359390B
(en)
ZA
(1)
ZA712170B
(en)
Cited By (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0844475A2
(en)
*
1996-11-20
1998-05-27
Microbial Systems Limited
Particle sizing apparatus
US6418802B1
(en)
*
1996-11-21
2002-07-16
Michael Anthony Wood
Particle sizing apparatus and method of use thereof
Families Citing this family (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US4165484A
(en)
*
1977-03-23
1979-08-21
Becton, Dickinson And Company
Particle counting apparatus utilizing various fluid resistors to maintain proper pressure differentials
US10641327B2
(en)
*
2018-07-13
2020-05-05
United Technologies Corporation
Oil supply system for fluid film damper
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3420993A
(en)
*
1964-11-23
1969-01-07
Gen Electric
Redundant analog failure correction and detection process and apparatus
US3530381A
(en)
*
1968-01-15
1970-09-22
Coulter Electronics
Voting circuit control apparatus for multiple aperture particle analyzing device
1970
1970-04-09
US
US27007A
patent/US3678382A/en
not_active
Expired – Lifetime
1971
1971-03-23
IL
IL36473A
patent/IL36473A/en
unknown
1971-04-05
CH
CH500971A
patent/CH543096A/en
not_active
IP Right Cessation
1971-04-05
DE
DE2116595A
patent/DE2116595C3/en
not_active
Expired
1971-04-05
CA
CA109622A
patent/CA934060A/en
not_active
Expired
1971-04-05
ZA
ZA712170A
patent/ZA712170B/en
unknown
1971-04-05
FR
FR7111929A
patent/FR2085947B1/fr
not_active
Expired
1971-04-05
NL
NL7104504A
patent/NL7104504A/xx
unknown
1971-04-05
SE
SE04386/71A
patent/SE359390B/xx
unknown
1971-04-05
JP
JP46020389A
patent/JPS519631B1/ja
active
Pending
1971-04-19
GB
GB2626571*A
patent/GB1331369A/en
not_active
Expired
Cited By (6)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
EP0844475A2
(en)
*
1996-11-20
1998-05-27
Microbial Systems Limited
Particle sizing apparatus
GB2319618A
(en)
*
1996-11-20
1998-05-27
Microbial Systems Ltd
Particle sizing apparatus
EP0844475A3
(en)
*
1996-11-20
1999-12-08
Microbial Systems Limited
Particle sizing apparatus
GB2319618B
(en)
*
1996-11-20
2000-08-23
Microbial Systems Ltd
Particle sizing apparatus
US6389912B1
(en)
1996-11-20
2002-05-21
Michael Anthony Wood
Particle sizing apparatus and method of use thereof
US6418802B1
(en)
*
1996-11-21
2002-07-16
Michael Anthony Wood
Particle sizing apparatus and method of use thereof
Also Published As
Publication number
Publication date
US3678382A
(en)
1972-07-18
SE359390B
(en)
1973-08-27
DE2116595A1
(en)
1971-11-04
ZA712170B
(en)
1972-11-29
JPS519631B1
(en)
1976-03-29
DE2116595B2
(en)
1973-06-28
CA934060A
(en)
1973-09-18
NL7104504A
(en)
1971-10-12
FR2085947A1
(en)
1971-12-31
DE2116595C3
(en)
1974-01-31
CH543096A
(en)
1973-10-15
FR2085947B1
(en)
1974-09-06
IL36473A0
(en)
1971-05-26
IL36473A
(en)
1973-05-31
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Legal Events
Date
Code
Title
Description
1974-02-06
PS
Patent sealed [section 19, patents act 1949]
1982-11-17
PCNP
Patent ceased through non-payment of renewal fee
