CH254963A - Dispositif amplificateur. - Google Patents

Dispositif amplificateur.

Info

Publication number: CH254963A
Authority: CH; Switzerland
Prior art keywords: amplifier device; amplifier
Prior art date: 1945-08-03

Application number

Other languages

English (en)

Inventor

Gloeilampenfabrieken N Philips

Original Assignee

Philips Nv

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.)

1945-08-03

Filing date

1946-08-30

Publication date

1948-05-31

1946-08-30 Application filed by Philips Nv filed Critical Philips Nv

1948-05-31 Publication of CH254963A publication Critical patent/CH254963A/fr

Classifications

- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/02—Manually-operated control
- H03G5/04—Manually-operated control in untuned amplifiers
- H03G5/06—Manually-operated control in untuned amplifiers having discharge tubes
- H03G5/08—Manually-operated control in untuned amplifiers having discharge tubes incorporating negative feedback
- 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
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
- H03F1/36—Negative-feedback-circuit arrangements with or without positive feedback in discharge-tube amplifiers
- 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
- H03F3/22—Power amplifiers, e.g. Class B amplifiers, Class C amplifiers with tubes only
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R3/00—Circuits for transducers, loudspeakers or microphones
- H04R3/12—Circuits for transducers, loudspeakers or microphones for distributing signals to two or more loudspeakers
- H04R3/14—Cross-over networks
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R5/00—Stereophonic arrangements
- H04R5/04—Circuit arrangements, e.g. for selective connection of amplifier inputs/outputs to loudspeakers, for loudspeaker detection, or for adaptation of settings to personal preferences or hearing impairments

Landscapes

Engineering & Computer Science (AREA)
Physics & Mathematics (AREA)
Acoustics & Sound (AREA)
Signal Processing (AREA)
Power Engineering (AREA)
Health & Medical Sciences (AREA)
General Health & Medical Sciences (AREA)
Otolaryngology (AREA)
Amplifiers (AREA)

CH254963D 1945-08-03 1946-08-30 Dispositif amplificateur. CH254963A (fr)

Applications Claiming Priority (1)

Application Number	Priority Date	Filing Date	Title
NL254963X		1945-08-03

Publications (1)

Publication Number	Publication Date
CH254963A true CH254963A (fr)	1948-05-31

Family

ID=19781259

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
CH254963D CH254963A (fr)	1945-08-03	1946-08-30	Dispositif amplificateur.

Country Status (5)

Country	Link
US (1)	US2452499A (fr)
BE (1)	BE467997A (fr)
CH (1)	CH254963A (fr)
FR (1)	FR936806A (fr)
GB (1)	GB618789A (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
DE1012643B (de) *	1955-05-23	1957-07-25	Loewe Opta Ag	Niederfrequenzverstaerker-Anordnung mit mehreren Lautsprechern oder Lautsprechergruppen
US3067390A (en) *	1959-10-07	1962-12-04	Optimation Inc	Low level frequency dividing network
GB1028383A (en) *	1963-10-29	1966-05-04	Rank Bush Murphy Ltd	Amplifier for feeding a reactive load
USRE31228E (en) *	1967-12-04	1983-05-03	Bose Corporation	Loudspeaker system

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB215104A (en) *	1923-02-05	1924-05-05	Henry Joseph Round	Improved means for reproducing sound
US1711529A (en) *	1923-05-14	1929-05-07	Signal Ges Mit Beschraenkter H	Multiple-range sound-transmitting system
FR613417A (fr) *	1925-03-31	1926-11-17
US1698269A (en) *	1926-10-29	1929-01-08	Konheim Harvey	Method of reproducing electrical oscillations and apparatus therefor
US1760821A (en) *	1927-10-19	1930-05-27	Leon F Douglass	Amplifying and reproducing system

0
- BE BE467997D patent/BE467997A/xx unknown
1946
- 1946-08-14 GB GB24120/46A patent/GB618789A/en not_active Expired
- 1946-08-30 CH CH254963D patent/CH254963A/fr unknown
- 1946-10-18 US US704122A patent/US2452499A/en not_active Expired - Lifetime
- 1946-10-23 FR FR936806D patent/FR936806A/fr not_active Expired

Also Published As

Publication number	Publication date
BE467997A (fr)
FR936806A (fr)	1948-07-30
US2452499A (en)	1948-10-26
GB618789A (en)	1949-02-28

Publication	Publication Date	Title
CH278146A (fr)	1951-09-30	Dispositif détecteur.
CH263053A (fr)	1949-08-15	Stylographe.
CH254963A (fr)	1948-05-31	Dispositif amplificateur.
CH254768A (fr)	1948-05-31	Dispositif de moulinage.
CH240816A (it)	1946-01-31	Dispositivo di giuoco.
CH257317A (fr)	1948-10-15	Herbicide.
CH258991A (fr)	1948-12-31	Dispositif d'amplification.
FR912940A (fr)	1946-08-23	Dispositif de pré-criblage
CH250719A (de)	1947-09-15	Kupplungsvorrichtung.
FR911775A (fr)	1946-07-19	Dispositif de pompage
CH253848A (fr)	1948-03-31	Dispositif de transport.
FR921190A (fr)	1947-04-29	Dispositif de haut-parleurs groupés
CH269696A (fr)	1950-07-15	Dispositif de freinage.
ES11420Y (es)	1945-09-01	Dispositivo atrapamoscas.
CH242479A (de)	1946-05-15	Transportgerät.
FR913052A (fr)	1946-08-28	Dispositif anti-retour de flammes
FR944298A (fr)	1949-03-31	Dispositif intégrateur
CH247360A (de)	1947-02-28	Reklamevorrichtung.
DK77798C (da)	1954-07-12	Koblingsapparat.
CH250451A (de)	1947-08-31	Kupplungsvorrichtung.
CH264349A (it)	1949-10-15	Apparecchio grammofonico portatile.
FR914938A (fr)	1946-10-22	Dispositif de raccord
ES11941Y (es)	1946-02-16	Aparato calculador automático.
DK66236C (da)	1948-01-26	Opmærkningsapparat.
CH257395A (de)	1948-10-15	Filtervorrichtung.