PT71642B - Schaltungsanordnung zum ansteuern eines signallautsprechers - Google Patents
Schaltungsanordnung zum ansteuern eines signallautsprechersInfo
- Publication number
- PT71642B PT71642B PT71642A PT7164280A PT71642B PT 71642 B PT71642 B PT 71642B PT 71642 A PT71642 A PT 71642A PT 7164280 A PT7164280 A PT 7164280A PT 71642 B PT71642 B PT 71642B
- Authority
- PT
- Portugal
- Prior art keywords
- controlling
- circuit arrangement
- signal speaker
- speaker
- signal
- Prior art date
Links
Classifications
-
- 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
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B3/00—Audible signalling systems; Audible personal calling systems
- G08B3/10—Audible signalling systems; Audible personal calling systems using electric transmission; using electromagnetic transmission
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Circuit For Audible Band Transducer (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2931437A DE2931437C2 (de) | 1979-08-02 | 1979-08-02 | Schaltungsanordnung zum Ansteuern eines Signallautsprechers |
Publications (2)
Publication Number | Publication Date |
---|---|
PT71642A PT71642A (de) | 1980-09-01 |
PT71642B true PT71642B (de) | 1981-06-26 |
Family
ID=6077496
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PT71642A PT71642B (de) | 1979-08-02 | 1980-08-01 | Schaltungsanordnung zum ansteuern eines signallautsprechers |
Country Status (8)
Country | Link |
---|---|
EP (1) | EP0023697A1 (de) |
DE (1) | DE2931437C2 (de) |
DK (1) | DK332580A (de) |
ES (1) | ES8104699A1 (de) |
FI (1) | FI802425A (de) |
NO (1) | NO802295L (de) |
PT (1) | PT71642B (de) |
YU (1) | YU191380A (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4797932A (en) * | 1987-11-23 | 1989-01-10 | Ncr Corporation | Speaker volume control apparatus and method |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3466649A (en) * | 1966-03-01 | 1969-09-09 | Gen Alarm Corp | Multiple alarm system |
US3657568A (en) * | 1970-01-05 | 1972-04-18 | Hamilton Watch Co | Pulse shaping circuit using complementary mos devices |
US3686666A (en) * | 1970-05-11 | 1972-08-22 | Xerox Corp | Interrupted pulsing circuit for audible signaling |
US3675133A (en) * | 1971-06-21 | 1972-07-04 | Ibm | Apparatus and method independently varying the widths of a plurality of pulses |
DE2554219A1 (de) * | 1975-12-03 | 1977-06-16 | Standard Elektrik Lorenz Ag | Schaltungsanordnung fuer einen akustischen signalgeber |
-
1979
- 1979-08-02 DE DE2931437A patent/DE2931437C2/de not_active Expired
-
1980
- 1980-07-28 EP EP80104440A patent/EP0023697A1/de not_active Withdrawn
- 1980-07-29 YU YU01913/80A patent/YU191380A/xx unknown
- 1980-07-30 NO NO802295A patent/NO802295L/no unknown
- 1980-07-31 ES ES493896A patent/ES8104699A1/es not_active Expired
- 1980-08-01 FI FI802425A patent/FI802425A/fi not_active Application Discontinuation
- 1980-08-01 PT PT71642A patent/PT71642B/de unknown
- 1980-08-01 DK DK332580A patent/DK332580A/da not_active Application Discontinuation
Also Published As
Publication number | Publication date |
---|---|
YU191380A (en) | 1983-09-30 |
ES493896A0 (es) | 1981-04-01 |
DK332580A (da) | 1981-02-03 |
ES8104699A1 (es) | 1981-04-01 |
EP0023697A1 (de) | 1981-02-11 |
NO802295L (no) | 1981-02-03 |
FI802425A (fi) | 1981-02-03 |
PT71642A (de) | 1980-09-01 |
DE2931437B1 (de) | 1980-12-11 |
DE2931437C2 (de) | 1981-09-24 |
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