BE467997A - - Google Patents

Info

Publication number: BE467997A
Authority: BE; Belgium

Application number

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

Publication of BE467997A publication Critical patent/BE467997A/xx

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

BE467997D 1945-08-03 BE467997A (enrdf_load_html_response)

Applications Claiming Priority (1)

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

Publications (1)

Publication Number	Publication Date
BE467997A true BE467997A (enrdf_load_html_response)

Family

ID=19781259

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
BE467997D BE467997A (enrdf_load_html_response)	1945-08-03

Country Status (5)

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

Families Citing this family (5)

* 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
US4434508A (en)	1981-11-03	1984-02-28	American Systems Corporation	Radio receiver with audio selectivity

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 (enrdf_load_html_response) *	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
US2452499A (en)	1948-10-26
FR936806A (fr)	1948-07-30
CH254963A (fr)	1948-05-31
GB618789A (en)	1949-02-28

Publication	Publication Date	Title
BE463701A (enrdf_load_html_response)	1946-04-30
BE467109A (enrdf_load_html_response)	1946-09-30
BE467997A (enrdf_load_html_response)
BE462699A (enrdf_load_html_response)
BE458675A (enrdf_load_html_response)
BE458700A (enrdf_load_html_response)
BE460046A (enrdf_load_html_response)
BE460423A (enrdf_load_html_response)	1945-11-30
BE461054A (enrdf_load_html_response)
BE461557A (enrdf_load_html_response)
BE461982A (enrdf_load_html_response)	1946-01-31
BE462110A (enrdf_load_html_response)
BE462556A (enrdf_load_html_response)
BE462635A (enrdf_load_html_response)
BE462653A (enrdf_load_html_response)
BE457701A (enrdf_load_html_response)
BE462934A (enrdf_load_html_response)
BE463065A (enrdf_load_html_response)
BE463338A (enrdf_load_html_response)
BE463406A (enrdf_load_html_response)	1946-03-30
BE464795A (enrdf_load_html_response)
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BE465235A (enrdf_load_html_response)
BE465605A (enrdf_load_html_response)
BE465638A (enrdf_load_html_response)