DK453379A - Kredsloeb til frembringelse af flere forskellige lydsignaler ved hjaelp af en lydtonegenerator - Google Patents
Kredsloeb til frembringelse af flere forskellige lydsignaler ved hjaelp af en lydtonegeneratorInfo
- Publication number
- DK453379A DK453379A DK453379A DK453379A DK453379A DK 453379 A DK453379 A DK 453379A DK 453379 A DK453379 A DK 453379A DK 453379 A DK453379 A DK 453379A DK 453379 A DK453379 A DK 453379A
- Authority
- DK
- Denmark
- Prior art keywords
- circuit
- making multiple
- multiple various
- sound
- sound signals
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/02—Generators characterised by the type of circuit or by the means used for producing pulses
- H03K3/027—Generators characterised by the type of circuit or by the means used for producing pulses by the use of logic circuits, with internal or external positive feedback
- H03K3/03—Astable circuits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B1/00—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency
- B06B1/02—Methods or apparatus for generating mechanical vibrations of infrasonic, sonic, or ultrasonic frequency making use of electrical energy
- B06B1/0207—Driving circuits
- B06B1/0223—Driving circuits for generating signals continuous in time
- B06B1/0269—Driving circuits for generating signals continuous in time for generating multiple frequencies
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B06—GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS IN GENERAL
- B06B—METHODS OR APPARATUS FOR GENERATING OR TRANSMITTING MECHANICAL VIBRATIONS OF INFRASONIC, SONIC, OR ULTRASONIC FREQUENCY, e.g. FOR PERFORMING MECHANICAL WORK IN GENERAL
- B06B2201/00—Indexing scheme associated with B06B1/0207 for details covered by B06B1/0207 but not provided for in any of its subgroups
- B06B2201/50—Application to a particular transducer type
- B06B2201/55—Piezoelectric transducer
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Devices For Supply Of Signal Current (AREA)
- Circuit For Audible Band Transducer (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/955,267 US4225856A (en) | 1978-10-27 | 1978-10-27 | Circuit means for providing multiple audible signals from an audible tone generator means |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DK453379A true DK453379A (da) | 1980-04-28 |
Family
ID=25496592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DK453379A DK453379A (da) | 1978-10-27 | 1979-10-26 | Kredsloeb til frembringelse af flere forskellige lydsignaler ved hjaelp af en lydtonegenerator |
Country Status (8)
| Country | Link |
|---|---|
| US (1) | US4225856A (da) |
| JP (1) | JPS5577797A (da) |
| BE (1) | BE879670A (da) |
| BR (1) | BR7906720A (da) |
| CA (1) | CA1121619A (da) |
| DE (1) | DE2943417A1 (da) |
| DK (1) | DK453379A (da) |
| GB (1) | GB2035653A (da) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4393373A (en) * | 1981-03-16 | 1983-07-12 | Fuji Electrochemical Co., Ltd. | Piezoelectric audible sound generator |
| US5633625A (en) * | 1995-03-20 | 1997-05-27 | Saturn Electronics & Engineering, Inc. | Electronic chime module and method |
| US6313744B1 (en) | 1998-03-25 | 2001-11-06 | Simplex Time Recorder Company | Alarm system with individual alarm indicator testing |
| DE10148303B4 (de) * | 2001-09-29 | 2006-12-14 | Dbt Gmbh | Verwendung eines Warntongebers |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3922672A (en) * | 1974-03-04 | 1975-11-25 | Mallory & Co Inc P R | Audible alarm device |
| US3978475A (en) * | 1975-05-29 | 1976-08-31 | Westinghouse Electric Corporation | Trouble indicator circuit for a security system |
-
1978
- 1978-10-27 US US05/955,267 patent/US4225856A/en not_active Expired - Lifetime
-
1979
- 1979-10-05 CA CA000337105A patent/CA1121619A/en not_active Expired
- 1979-10-18 BR BR7906720A patent/BR7906720A/pt unknown
- 1979-10-26 BE BE0/197846A patent/BE879670A/fr unknown
- 1979-10-26 DE DE19792943417 patent/DE2943417A1/de not_active Withdrawn
- 1979-10-26 GB GB7937218A patent/GB2035653A/en not_active Withdrawn
- 1979-10-26 JP JP13861279A patent/JPS5577797A/ja active Pending
- 1979-10-26 DK DK453379A patent/DK453379A/da not_active Application Discontinuation
Also Published As
| Publication number | Publication date |
|---|---|
| JPS5577797A (en) | 1980-06-11 |
| US4225856A (en) | 1980-09-30 |
| CA1121619A (en) | 1982-04-13 |
| DE2943417A1 (de) | 1980-05-08 |
| BE879670A (fr) | 1980-02-15 |
| GB2035653A (en) | 1980-06-18 |
| BR7906720A (pt) | 1980-06-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AHS | Application shelved for other reasons than non-payment |