FR72070E - Electromechanical transducer - Google Patents
Electromechanical transducerInfo
- Publication number
- FR72070E FR72070E FR72070DA FR72070E FR 72070 E FR72070 E FR 72070E FR 72070D A FR72070D A FR 72070DA FR 72070 E FR72070 E FR 72070E
- Authority
- FR
- France
- Prior art keywords
- electromechanical transducer
- electromechanical
- transducer
- Prior art date
- 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
- H03F—AMPLIFIERS
- H03F13/00—Amplifiers using amplifying element consisting of two mechanically- or acoustically-coupled transducers, e.g. telephone-microphone amplifier
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02M—APPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
- H02M5/00—Conversion of ac power input into ac power output, e.g. for change of voltage, for change of frequency, for change of number of phases
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/15—Constructional features of resonators consisting of piezoelectric or electrostrictive material
- H03H9/17—Constructional features of resonators consisting of piezoelectric or electrostrictive material having a single resonator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H9/00—Networks comprising electromechanical or electro-acoustic devices; Electromechanical resonators
- H03H9/46—Filters
- H03H9/54—Filters comprising resonators of piezoelectric or electrostrictive material
- H03H9/56—Monolithic crystal filters
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N—ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10N30/00—Piezoelectric or electrostrictive devices
- H10N30/40—Piezoelectric or electrostrictive devices with electrical input and electrical output, e.g. functioning as transformers
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Chemical & Material Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US40181254A | 1954-01-04 | 1954-01-04 | |
US439992A US2830274A (en) | 1954-01-04 | 1954-06-29 | Electromechanical transducer |
Publications (1)
Publication Number | Publication Date |
---|---|
FR72070E true FR72070E (en) | 1960-03-21 |
Family
ID=31949849
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR68707D Expired FR68707E (en) | 1954-01-04 | 1955-06-29 | Electro-mechanical transducer |
FR72070D Expired FR72070E (en) | 1954-01-04 | 1957-06-19 | Electromechanical transducer |
Family Applications Before (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR68707D Expired FR68707E (en) | 1954-01-04 | 1955-06-29 | Electro-mechanical transducer |
Country Status (1)
Country | Link |
---|---|
FR (2) | FR68707E (en) |
-
1955
- 1955-06-29 FR FR68707D patent/FR68707E/en not_active Expired
-
1957
- 1957-06-19 FR FR72070D patent/FR72070E/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
FR68707E (en) | 1958-06-09 |
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