FR1556043A - - Google Patents
Info
- Publication number
- FR1556043A FR1556043A FR1556043DA FR1556043A FR 1556043 A FR1556043 A FR 1556043A FR 1556043D A FR1556043D A FR 1556043DA FR 1556043 A FR1556043 A FR 1556043A
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K3/00—Circuits for generating electric pulses; Monostable, bistable or multistable circuits
- H03K3/80—Generating trains of sinusoidal oscillations
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N29/00—Investigating or analysing materials by the use of ultrasonic, sonic or infrasonic waves; Visualisation of the interior of objects by transmitting ultrasonic or sonic waves through the object
- G01N29/22—Details, e.g. general constructional or apparatus details
- G01N29/221—Arrangements for directing or focusing the acoustical waves
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
- G10K11/341—Circuits therefor
- G10K11/345—Circuits therefor using energy switching from one active element to another
-
- G—PHYSICS
- G10—MUSICAL INSTRUMENTS; ACOUSTICS
- G10K—SOUND-PRODUCING DEVICES; METHODS OR DEVICES FOR PROTECTING AGAINST, OR FOR DAMPING, NOISE OR OTHER ACOUSTIC WAVES IN GENERAL; ACOUSTICS NOT OTHERWISE PROVIDED FOR
- G10K11/00—Methods or devices for transmitting, conducting or directing sound in general; Methods or devices for protecting against, or for damping, noise or other acoustic waves in general
- G10K11/18—Methods or devices for transmitting, conducting or directing sound
- G10K11/26—Sound-focusing or directing, e.g. scanning
- G10K11/34—Sound-focusing or directing, e.g. scanning using electrical steering of transducer arrays, e.g. beam steering
- G10K11/341—Circuits therefor
- G10K11/346—Circuits therefor using phase variation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B11/00—Generation of oscillations using a shock-excited tuned circuit
- H03B11/04—Generation of oscillations using a shock-excited tuned circuit excited by interrupter
- H03B11/10—Generation of oscillations using a shock-excited tuned circuit excited by interrupter interrupter being semiconductor device
Landscapes
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Ultrasonic Waves (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
NL676703603A NL148458B (nl) | 1967-03-07 | 1967-03-07 | Ultrasonore zender. |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1556043A true FR1556043A (fr) | 1969-01-31 |
Family
ID=19799493
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR1556043D Expired FR1556043A (fr) | 1967-03-07 | 1968-03-01 |
Country Status (5)
Country | Link |
---|---|
US (1) | US3516054A (fr) |
DE (1) | DE1698149C3 (fr) |
FR (1) | FR1556043A (fr) |
GB (1) | GB1204258A (fr) |
NL (1) | NL148458B (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2403707A1 (fr) * | 1977-07-20 | 1979-04-13 | Mannesmann Ag | Procede d'excitation de transducteurs electro-acoustiques |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPS5233994B1 (fr) * | 1971-06-25 | 1977-08-31 | ||
US4001817A (en) * | 1974-10-23 | 1977-01-04 | American Electronics Corporation | Ultrasonic rodent control device and method |
JPS5729905Y2 (fr) * | 1980-02-07 | 1982-06-30 | ||
NL8200478A (nl) * | 1982-02-09 | 1983-09-01 | Philips Nv | Ultrasone zender. |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3056961A (en) * | 1957-08-15 | 1962-10-02 | Post Office | Steerable directional random antenna array |
US3342283A (en) * | 1964-07-13 | 1967-09-19 | Gen Dynamics Corp | Control apparatus utilized to produce a beam from seismic sources |
US3346837A (en) * | 1966-10-18 | 1967-10-10 | Gen Dynamics Corp | Delay counter phase control system for use in producing a variable direction beam from a fixed transmitting array |
US3324435A (en) * | 1966-10-20 | 1967-06-06 | Statham Instrument Inc | Voltage breakdown control in strain gages |
-
1967
- 1967-03-07 NL NL676703603A patent/NL148458B/xx unknown
-
1968
- 1968-03-01 FR FR1556043D patent/FR1556043A/fr not_active Expired
- 1968-03-01 US US709721A patent/US3516054A/en not_active Expired - Lifetime
- 1968-03-06 GB GB00889/68A patent/GB1204258A/en not_active Expired
- 1968-03-07 DE DE1698149A patent/DE1698149C3/de not_active Expired
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2403707A1 (fr) * | 1977-07-20 | 1979-04-13 | Mannesmann Ag | Procede d'excitation de transducteurs electro-acoustiques |
Also Published As
Publication number | Publication date |
---|---|
DE1698149A1 (de) | 1971-08-12 |
DE1698149C3 (de) | 1974-04-04 |
NL6703603A (fr) | 1968-09-09 |
US3516054A (en) | 1970-06-02 |
NL148458B (nl) | 1976-01-15 |
DE1698149B2 (de) | 1973-08-23 |
GB1204258A (en) | 1970-09-03 |
Similar Documents
Legal Events
Date | Code | Title | Description |
---|---|---|---|
ST | Notification of lapse |