BE467997A - - Google Patents
Info
- Publication number
- BE467997A BE467997A BE467997DA BE467997A BE 467997 A BE467997 A BE 467997A BE 467997D A BE467997D A BE 467997DA BE 467997 A BE467997 A BE 467997A
- Authority
- BE
- Belgium
Links
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)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL254963X | 1945-08-03 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE467997A true BE467997A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) |
Family
ID=19781259
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE467997D BE467997A (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) | 1945-08-03 |
Country Status (5)
Families Citing this family (5)
| 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)
| 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 (GUID-C5D7CC26-194C-43D0-91A1-9AE8C70A9BFF.html) * | 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 |
| GB618789A (en) | 1949-02-28 |
| FR936806A (fr) | 1948-07-30 |
| CH254963A (fr) | 1948-05-31 |