FR2435169B3 - - Google Patents
Info
- Publication number
- FR2435169B3 FR2435169B3 FR7916790A FR7916790A FR2435169B3 FR 2435169 B3 FR2435169 B3 FR 2435169B3 FR 7916790 A FR7916790 A FR 7916790A FR 7916790 A FR7916790 A FR 7916790A FR 2435169 B3 FR2435169 B3 FR 2435169B3
- Authority
- FR
- France
- Legal status (The legal status 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 status listed.)
- Expired
Links
Classifications
-
- 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
- B06B1/023—Driving circuits for generating signals continuous in time and stepped in amplitude, e.g. square wave, 2-level signal
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION, OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L1/00—Stabilisation of generator output against variations of physical values, e.g. power supply
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE2837951A DE2837951C2 (en) | 1978-08-31 | 1978-08-31 | Circuit for an electrical, contactless, acoustic signal transmitter |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| FR2435169A1 FR2435169A1 (en) | 1980-03-28 |
| FR2435169B3 true FR2435169B3 (en) | 1982-06-04 |
Family
ID=6048320
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| FR7916790A Granted FR2435169A1 (en) | 1978-08-31 | 1979-06-28 | Acoustic horn for vehicles - has pulse width modulated circuit output to maintain constant power of horn |
Country Status (5)
| Country | Link |
|---|---|
| DE (1) | DE2837951C2 (en) |
| ES (1) | ES482602A1 (en) |
| FR (1) | FR2435169A1 (en) |
| IT (1) | IT1120506B (en) |
| YU (1) | YU199879A (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE2908970C2 (en) * | 1978-08-31 | 1985-09-05 | Schaltbau GmbH, 8000 München | Circuit for acoustic signal generator |
| DE2847208C2 (en) * | 1978-10-30 | 1983-11-24 | Siegas Metallwarenfabrik Wilhelm Loh Gmbh & Co Kg, 5900 Siegen | Control circuit for a vibratory electromechanical system |
| GB2346758B (en) * | 1999-02-10 | 2003-07-30 | Manhar Amlani | Audible warning devices |
| US7424120B2 (en) | 2003-08-06 | 2008-09-09 | Avago Technologies General Ip Pte Ltd | Method and apparatus for volume control |
-
1978
- 1978-08-31 DE DE2837951A patent/DE2837951C2/en not_active Expired
-
1979
- 1979-06-28 FR FR7916790A patent/FR2435169A1/en active Granted
- 1979-07-18 ES ES482602A patent/ES482602A1/en not_active Expired
- 1979-08-10 IT IT50025/79A patent/IT1120506B/en active
- 1979-08-16 YU YU01998/79A patent/YU199879A/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| IT1120506B (en) | 1986-03-26 |
| ES482602A1 (en) | 1980-04-01 |
| IT7950025A0 (en) | 1979-08-10 |
| YU199879A (en) | 1983-02-28 |
| DE2837951A1 (en) | 1980-03-13 |
| DE2837951C2 (en) | 1983-09-22 |
| FR2435169A1 (en) | 1980-03-28 |