GB1462198A - Creation of Inventions and Patents with Artificial Intelligence

GB1462198A – Electrical analogu level detector
– Google Patents

GB1462198A – Electrical analogu level detector
– Google Patents
Electrical analogu level detector

Info

Publication number
GB1462198A

GB1462198A
GB5994173A
GB5994173A
GB1462198A
GB 1462198 A
GB1462198 A
GB 1462198A
GB 5994173 A
GB5994173 A
GB 5994173A
GB 5994173 A
GB5994173 A
GB 5994173A
GB 1462198 A
GB1462198 A
GB 1462198A
Authority
GB
United Kingdom
Prior art keywords
input
amplifiers
inputs
transistor
output
Prior art date
1973-01-03
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
GB5994173A
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.)

CBS Corp

Original Assignee
Westinghouse Electric Corp
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.)
1973-01-03
Filing date
1973-12-28
Publication date
1977-01-19

1973-12-28
Application filed by Westinghouse Electric Corp
filed
Critical
Westinghouse Electric Corp

1977-01-19
Publication of GB1462198A
publication
Critical
patent/GB1462198A/en

Status
Expired
legal-status
Critical
Current

Links

Espacenet

Global Dossier

Discuss

Classifications

G—PHYSICS

G01—MEASURING; TESTING

G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES

G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof

G01R19/0038—Circuits for comparing several input signals and for indicating the result of this comparison, e.g. equal, different, greater, smaller (comparing pulses or pulse trains according to amplitude)

G—PHYSICS

G01—MEASURING; TESTING

G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES

G01R13/00—Arrangements for displaying electric variables or waveforms

G01R13/02—Arrangements for displaying electric variables or waveforms for displaying measured electric variables in digital form

Abstract

1462198 Detecting largest smallest signals WESTINGHOUSE ELECTRIC CORP 28 Dec 1973 [3 Jan 1973] 59941/73 Heading G1U [Also in Divisions G4 and H3] In an analog level detector having n inputs connected to non-inverting inputs of n amplifiers 58, 60-68 and n diodes D80, D82-D92 connected to pass the outputs of the amplifiers to perform an OR function at an analog output and to form a feedback loop between the inverting inputs and outputs of the amplifiers for feeding a reference bias voltage to the inputs so that the input signal having the extreme value is passed to the analog output, an encoder 94, 96, 98 is commonly connected to the amplifiers and is responsive to the input having the extreme analog value to provide a digital coded output having x bits where x is defined by 2x = n. As shown in Fig. 2A assuming the input 2 has the highest analog value the output of an operational amplifier 60 forward biases a transistor 70 and a diode 82 and makes the signal fed back to the inverting input of the amplifier 60 equal to the voltage at input 2. Since the same voltage is fed back to the inverting inputs of the other operational amplifiers 58, 62, 64, 66 and 68 and since all other inputs are less than input 2 all the other amplifiers 58, 62, 64, 66 and 68 will be saturated negative. As the transistor 70 is conducting a transistor 94 also conducts to make the binary output ABC equal to 001. The operation of the circuit when the other inputs are greatest is given by the table Fig. 2B. The detector may respond to detect the lowest input signal by using transistors of opposite conductivity type to those shown Fig. 3A, (not shown). The output signals from the operational amplifiers 58-68 fed back to their inverting inputs may be adjusted to equal their input voltages by a “trim pot” within the amplifier circuit. Diodes 82-90 prevent breakdown of the emitter-base junction of their associated transistor. Additional transistor circuitry Fig. 4, (not shown) including zener diodes (114, 116) connected to the analog output of the detector can be used so as to enable the level detector to accommodate high common mode input signals of the order of voltages (ŒVHV) supplied to transistors (118, 120) of this additional circuitry. A known level detecting transistor circuit which may be in integrated circuit form is disclosed Fig. 1A, (not shown).

GB5994173A
1973-01-03
1973-12-28
Electrical analogu level detector

Expired

GB1462198A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

US00320778A

US3858199A
(en)

1973-01-03
1973-01-03
Tracking level detector

Publications (1)

Publication Number
Publication Date

GB1462198A
true

GB1462198A
(en)

1977-01-19

Family
ID=23247834
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB5994173A
Expired

GB1462198A
(en)

1973-01-03
1973-12-28
Electrical analogu level detector

Country Status (11)

Country
Link

US
(1)

US3858199A
(en)

JP
(2)

JPS49117076A
(en)

BE
(1)

BE809321A
(en)

CA
(1)

CA993558A
(en)

CH
(1)

CH587522A5
(en)

DE
(1)

DE2364313C2
(en)

ES
(1)

ES421651A1
(en)

FR
(1)

FR2212548B1
(en)

GB
(1)

GB1462198A
(en)

IT
(1)

IT1005310B
(en)

SE
(1)

SE397246B
(en)

Cited By (2)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

GB2189952A
(en)

1986-04-30
1987-11-04
Westinghouse Electric Corp
Multi-function control system for an induction motor drive

GB2227325A
(en)

1989-01-21
1990-07-25
Ferranti Int Signal
Maximum amplitude detector

Families Citing this family (13)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

JPS558051B2
(en)

1974-11-06
1980-03-01

US3969619A
(en)

1975-02-13
1976-07-13
Combustion Engineering, Inc.
Analog servo memory

US4017742A
(en)

1975-03-28
1977-04-12
The Bendix Corporation
Multiple input, multiple failure operational voter circuit

JPS60613B2
(en)

1975-11-25
1985-01-09
旭光学工業株式会社

Light meter digital display circuit

US4371496A
(en)

1980-06-18
1983-02-01
Westinghouse Electric Corp.
Position indication system

JPH0656394B2
(en)

1983-06-03
1994-07-27
株式会社日立製作所

Signal selection circuit

JPS6025972U
(en)

1983-07-28
1985-02-21
ソニー株式会社

window comparator

DE4005037A1
(en)

1990-02-16
1991-08-22
Siemens Nixdorf Inf Syst
Analogue=digital voltage converter – uses binary values representing results of successive comparisons with respective reference voltages

EP0445384B1
(en)

1990-03-06
1995-07-26
Siemens Aktiengesellschaft
Method and circuit arrangement for threshold control

US5315171A
(en)

1992-12-23
1994-05-24
Michael Blauer
Analog feedback rank order filter

EP0731921A1
(en)

1994-09-30
1996-09-18
Koninklijke Philips Electronics N.V.
Extreme level circuit

KR101097914B1
(en)

2004-05-11
2011-12-23
삼성전자주식회사
Analog buffer and display device having the same, method for driving of analog buffer

US8872549B2
(en)

2013-02-19
2014-10-28
Analog Devices, Inc.
Analog minimum or maximum voltage selector circuit

Family Cites Families (5)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

US3064894A
(en)

1956-10-09
1962-11-20
Charles A Campbell
Decimal to binary and binary-decimal to binary converter

DE1623855A1
(en)

1967-08-01
1971-04-01
Telefunken Patent

Circuit arrangement for determining which of several lines simultaneously carrying different voltages which has the highest voltage

US3521179A
(en)

1968-04-02
1970-07-21
Weston Instruments Inc
Amplifier with source voltage control

US3596107A
(en)

1969-07-09
1971-07-27
Collins Radio Co
Signal selector

DE2124314A1
(en)

1971-05-17
1972-11-30
Licentia Gmbh

1973

1973-01-03
US
US00320778A
patent/US3858199A/en
not_active
Expired – Lifetime

1973-11-30
CA
CA187,089A
patent/CA993558A/en
not_active
Expired

1973-12-11
JP
JP48137431A
patent/JPS49117076A/ja
active
Pending

1973-12-20
ES
ES421651A
patent/ES421651A1/en
not_active
Expired

1973-12-20
FR
FR737345866A
patent/FR2212548B1/fr
not_active
Expired

1973-12-22
DE
DE2364313A
patent/DE2364313C2/en
not_active
Expired

1973-12-28
GB
GB5994173A
patent/GB1462198A/en
not_active
Expired

1974

1974-01-02
BE
BE1005618A
patent/BE809321A/en
not_active
IP Right Cessation

1974-01-03
CH
CH4774A
patent/CH587522A5/xx
not_active
IP Right Cessation

1974-01-03
IT
IT7203/74A
patent/IT1005310B/en
active

1974-01-03
SE
SE7400068A
patent/SE397246B/en
not_active
IP Right Cessation

1978

1978-05-16
JP
JP1978064664U
patent/JPS545478U/ja
active
Pending

Cited By (5)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

GB2189952A
(en)

1986-04-30
1987-11-04
Westinghouse Electric Corp
Multi-function control system for an induction motor drive

GB2189952B
(en)

1986-04-30
1990-05-16
Westinghouse Electric Corp
Control system for an induction motor drive

GB2227325A
(en)

1989-01-21
1990-07-25
Ferranti Int Signal
Maximum amplitude detector

US5047667A
(en)

1989-01-21
1991-09-10
Gec Ferranti Defence Systems Limited
Voltage difference detector

GB2227325B
(en)

1989-01-21
1993-06-09
Ferranti Int Signal
Electrical detector circuits

Also Published As

Publication number
Publication date

DE2364313C2
(en)

1984-06-28

JPS49117076A
(en)

1974-11-08

BE809321A
(en)

1974-07-02

ES421651A1
(en)

1976-04-01

JPS545478U
(en)

1979-01-13

SE397246B
(en)

1977-10-24

IT1005310B
(en)

1976-08-20

CA993558A
(en)

1976-07-20

US3858199A
(en)

1974-12-31

CH587522A5
(en)

1977-05-13

FR2212548A1
(en)

1974-07-26

DE2364313A1
(en)

1974-07-04

FR2212548B1
(en)

1979-02-09

Contact information