GB1517728A – Circuit arrangement
– Google Patents
GB1517728A – Circuit arrangement
– Google Patents
Circuit arrangement
Info
Publication number
GB1517728A
GB1517728A
GB41626/75A
GB4162675A
GB1517728A
GB 1517728 A
GB1517728 A
GB 1517728A
GB 41626/75 A
GB41626/75 A
GB 41626/75A
GB 4162675 A
GB4162675 A
GB 4162675A
GB 1517728 A
GB1517728 A
GB 1517728A
Authority
GB
United Kingdom
Prior art keywords
oct
impedance
gain
output
circuit arrangement
Prior art date
1974-10-15
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
GB41626/75A
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.)
Philips Electronics UK Ltd
Original Assignee
Philips Electronic and Associated Industries Ltd
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.)
1974-10-15
Filing date
1975-10-10
Publication date
1978-07-12
1975-10-10
Application filed by Philips Electronic and Associated Industries Ltd
filed
Critical
Philips Electronic and Associated Industries Ltd
1978-07-12
Publication of GB1517728A
publication
Critical
patent/GB1517728A/en
Status
Expired
legal-status
Critical
Current
Links
Espacenet
Global Dossier
Discuss
Classifications
H—ELECTRICITY
H03—ELECTRONIC CIRCUITRY
H03G—CONTROL OF AMPLIFICATION
H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
H03G9/12—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices
H03G9/18—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having semiconductor devices for tone control and volume expansion or compression
Abstract
1517728 Companders PHILIPS ELECTRONIC & ASSOCIATED INDUSTRIES Ltd 10 Oct 1975 [15 Oct 1974] 41626/75 Heading H4R A circuit providing complementary transfer functions, particularly for noise reduction, includes followers T 1 , T 2 selectively operable 5 to apply inputs 1 or.2 to respective impedances Z 1 , Z 2 , a current mirror T 3 , T 4 causing the current through one impedance to be reflected in the other. In record/playback apparatus, an input at 1 is transferred to output 3 for monitoring and to recording output 4 with gain Z 2 /Z 1 . With switch 5 reversed, the playback signal at 2 appears at 4 unmodified and at 3 with gain Z 1 /Z 2 . Impedance Z 2 may be complex as in Specification 1,431,481.
GB41626/75A
1974-10-15
1975-10-10
Circuit arrangement
Expired
GB1517728A
(en)
Applications Claiming Priority (1)
Application Number
Priority Date
Filing Date
Title
NL7413514A
NL7413514A
(en)
1974-10-15
1974-10-15
DEVICE FOR THE OPTIONAL REALIZATION OF TWO COMPLETE FUNCTIONS.
Publications (1)
Publication Number
Publication Date
GB1517728A
true
GB1517728A
(en)
1978-07-12
Family
ID=19822278
Family Applications (1)
Application Number
Title
Priority Date
Filing Date
GB41626/75A
Expired
GB1517728A
(en)
1974-10-15
1975-10-10
Circuit arrangement
Country Status (13)
Country
Link
US
(1)
US4001731A
(en)
JP
(1)
JPS575096B2
(en)
AT
(1)
AT351599B
(en)
AU
(1)
AU498190B2
(en)
BE
(1)
BE834452A
(en)
CA
(1)
CA1024899A
(en)
DE
(1)
DE2544234C2
(en)
ES
(1)
ES441736A1
(en)
FR
(1)
FR2288417A1
(en)
GB
(1)
GB1517728A
(en)
IT
(1)
IT1047353B
(en)
NL
(1)
NL7413514A
(en)
SE
(1)
SE404859B
(en)
Families Citing this family (4)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
NL7700807A
(en)
*
1977-01-27
1978-07-31
Philips Nv
POWER STABILIZER.
US4544878A
(en)
*
1983-10-04
1985-10-01
At&T Bell Laboratories
Switched current mirror
US9405308B2
(en)
2014-05-19
2016-08-02
Telefonaktiebolaget Lm Ericsson (Publ)
Method and apparatus to minimize switching noise disturbance
KR102563272B1
(en)
*
2016-08-26
2023-08-03
한화정밀기계 주식회사
Tilting stage system
Family Cites Families (2)
* Cited by examiner, † Cited by third party
Publication number
Priority date
Publication date
Assignee
Title
DE2312086C3
(en)
*
1972-03-30
1979-10-31
N.V. Philips’ Gloeilampenfabrieken, Eindhoven (Niederlande)
Signal transmission device with an amplitude and frequency dependent transmission function
US3932768A
(en)
*
1973-03-15
1976-01-13
Victor Company Of Japan, Ltd.
Limiting amplifier
1974
1974-10-15
NL
NL7413514A
patent/NL7413514A/en
not_active
Application Discontinuation
1975
1975-10-02
US
US05/619,063
patent/US4001731A/en
not_active
Expired – Lifetime
1975-10-03
DE
DE2544234A
patent/DE2544234C2/en
not_active
Expired
1975-10-09
CA
CA237,352A
patent/CA1024899A/en
not_active
Expired
1975-10-10
GB
GB41626/75A
patent/GB1517728A/en
not_active
Expired
1975-10-10
IT
IT69539/75A
patent/IT1047353B/en
active
1975-10-13
AT
AT779775A
patent/AT351599B/en
not_active
IP Right Cessation
1975-10-13
BE
BE160895A
patent/BE834452A/en
not_active
IP Right Cessation
1975-10-13
AU
AU85658/75A
patent/AU498190B2/en
not_active
Expired
1975-10-13
ES
ES441736A
patent/ES441736A1/en
not_active
Expired
1975-10-13
SE
SE7511420A
patent/SE404859B/en
unknown
1975-10-14
FR
FR7531382A
patent/FR2288417A1/en
active
Granted
1975-10-15
JP
JP12425475A
patent/JPS575096B2/ja
not_active
Expired
Also Published As
Publication number
Publication date
IT1047353B
(en)
1980-09-10
AT351599B
(en)
1979-08-10
AU8565875A
(en)
1977-04-21
ES441736A1
(en)
1977-04-01
BE834452A
(en)
1976-04-13
DE2544234A1
(en)
1976-04-29
FR2288417B1
(en)
1982-08-20
JPS5164860A
(en)
1976-06-04
NL7413514A
(en)
1976-04-21
US4001731A
(en)
1977-01-04
DE2544234C2
(en)
1983-06-23
ATA779775A
(en)
1979-01-15
SE7511420L
(en)
1976-04-20
JPS575096B2
(en)
1982-01-28
SE404859B
(en)
1978-10-30
AU498190B2
(en)
1979-02-15
FR2288417A1
(en)
1976-05-14
CA1024899A
(en)
1978-01-24
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Legal Events
Date
Code
Title
Description
1978-11-15
PS
Patent sealed [section 19, patents act 1949]
1990-06-06
PCNP
Patent ceased through non-payment of renewal fee
