GB1104848A – A d.c. switching and amplifying arrangement
– Google Patents
GB1104848A – A d.c. switching and amplifying arrangement
– Google Patents
A d.c. switching and amplifying arrangement
Info
Publication number
GB1104848A
GB1104848A
GB40268/65A
GB4026865A
GB1104848A
GB 1104848 A
GB1104848 A
GB 1104848A
GB 40268/65 A
GB40268/65 A
GB 40268/65A
GB 4026865 A
GB4026865 A
GB 4026865A
GB 1104848 A
GB1104848 A
GB 1104848A
Authority
GB
United Kingdom
Prior art keywords
current
control winding
terminals
transformers
amplifier
Prior art date
1964-10-26
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
GB40268/65A
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.)
Alcatel CIT SA
Original Assignee
Alcatel CIT SA
Compagnie Industrielle de Telecommunication CIT Alcatel SA
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.)
1964-10-26
Filing date
1965-09-21
Publication date
1968-02-28
1965-09-21
Application filed by Alcatel CIT SA, Compagnie Industrielle de Telecommunication CIT Alcatel SA
filed
Critical
Alcatel CIT SA
1968-02-28
Publication of GB1104848A
publication
Critical
patent/GB1104848A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03F—AMPLIFIERS
H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
H03F1/303—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters using a switching device
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03F—AMPLIFIERS
H03F15/00—Amplifiers using galvano-magnetic effects not involving mechanical movement, e.g. using Hall effect
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03F—AMPLIFIERS
H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
H03F3/20—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers
H03F3/21—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with semiconductor devices only
H03F3/217—Class D power amplifiers; Switching amplifiers
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03F—AMPLIFIERS
H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
H03F3/38—Dc amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers
H03F3/40—Dc amplifiers with modulator at input and demodulator at output; Modulators or demodulators specially adapted for use in such amplifiers with tubes only
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03F—AMPLIFIERS
H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
H03F3/66—Amplifiers simultaneously generating oscillations of one frequency and amplifying signals of another frequency
Abstract
1,104,848. Semi-conductor amplifying; oscillating and switching circuits. COMPAGNIE INDUSTRIELLE DES TELECOMMUNICATIONS. 21 Sept., 1965 [26 Oct., 1964], No. 40268/65. Heading H3T. A Hall plate with two pairs of terminals 14, 15 and 16, 17, respectively, is located in the gap of electromagnet 11 having a control winding 12; one pair of terminals 14, 15 feeds an A.C. amplifier 18 the output of which comprises two transformers with their primary windings 19b, 20b connected in series and tuned by separate capacitors 19a, 20a, respectively, to different frequencies. The secondary windings 21, 22 of the transformers are so connected in series to the second pair of terminals 16, 17 of the Hall plate as to provide back-coupling, so that when there is a current in control winding 12 the circuit oscillates at the one frequency or the other in dependence upon the polarity of the magnetic field, i.e. the sense of the current in the control winding. The transformers also comprise tertiary windings 23, 24 the outputs of which are rectified by rectifier circuits 25, 26, respectively, which are poled oppositely and give a combined voltage output at terminals 31, 32 which has the same sense as the current in control winding 12 but is independent of its value for appreciable currents. This output may be fed back to a second winding on magnet 11 (Fig. 3, not shown) so as to oppose the effect of the current in control winding 12 and the arrangement may then operate as a linear amplifier. This arrangement may alternatively be made unstable, by increasing the gain in amplifier 18 or delaying the negative feedback current, so that the latter oscillates about a mean value.
GB40268/65A
1964-10-26
1965-09-21
A d.c. switching and amplifying arrangement
Expired
GB1104848A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
FR992693A
FR1420483A
(en)
1964-10-26
1964-10-26
Improvements to DC amplifiers
Publications (1)
Publication Number
Publication Date
GB1104848A
true
GB1104848A
(en)
1968-02-28
Family
ID=8841099
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB40268/65A
Expired
GB1104848A
(en)
1964-10-26
1965-09-21
A d.c. switching and amplifying arrangement
Country Status (7)
Country
Link
US
(1)
US3443234A
(en)
BE
(1)
BE671028A
(en)
DE
(1)
DE1248728B
(en)
FR
(1)
FR1420483A
(en)
GB
(1)
GB1104848A
(en)
LU
(1)
LU49689A1
(en)
NL
(1)
NL6513282A
(en)
Families Citing this family (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
CH477778A
(en)
*
1968-02-20
1969-08-31
Siemens Ag
Temperature response compensated Hall voltage amplifier device
JPS5354202Y2
(en)
*
1974-03-08
1978-12-25
US5450000A
(en)
*
1994-02-14
1995-09-12
Unity Power Corporation
Using hall device for controlling current in a switchmode circuit
GB2507055A
(en)
2012-10-16
2014-04-23
Melexis Technologies Nv
Integrated circuit and method for biasing a hall plate
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
US3189838A
(en)
*
1961-11-22
1965-06-15
Honeywell Inc
Hall-effect amplifiers
US3317835A
(en)
*
1963-05-10
1967-05-02
Siemens Ag
Hall generator wattmeter having square-wave superimposed on hall plate output to compensate for power factor
0
DE
DENDAT1248728D
patent/DE1248728B/en
active
Pending
1964
1964-10-26
FR
FR992693A
patent/FR1420483A/en
not_active
Expired
1965
1965-09-21
GB
GB40268/65A
patent/GB1104848A/en
not_active
Expired
1965-10-14
NL
NL6513282A
patent/NL6513282A/xx
unknown
1965-10-18
BE
BE671028A
patent/BE671028A/xx
unknown
1965-10-22
LU
LU49689A
patent/LU49689A1/xx
unknown
1965-10-22
US
US501704A
patent/US3443234A/en
not_active
Expired – Lifetime
Also Published As
Publication number
Publication date
DE1248728B
(en)
1967-08-31
LU49689A1
(en)
1967-04-24
NL6513282A
(en)
1966-04-27
BE671028A
(en)
1966-04-18
US3443234A
(en)
1969-05-06
FR1420483A
(en)
1965-12-10
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