CH247481A - Pick-up phonographique comportant un cristal piézo-électrique. - Google Patents
Pick-up phonographique comportant un cristal piézo-électrique.Info
- Publication number
- CH247481A CH247481A CH247481DA CH247481A CH 247481 A CH247481 A CH 247481A CH 247481D A CH247481D A CH 247481DA CH 247481 A CH247481 A CH 247481A
- Authority
- CH
- Switzerland
- Prior art keywords
- piezoelectric crystal
- phonographic
- pick
- phonographic pick
- piezoelectric
- Prior art date
Links
- 239000013078 crystal Substances 0.000 title 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R17/00—Piezoelectric transducers; Electrostrictive transducers
- H04R17/04—Gramophone pick-ups using a stylus; Recorders using a stylus
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR986662T | 1943-12-03 |
Publications (1)
Publication Number | Publication Date |
---|---|
CH247481A true CH247481A (fr) | 1947-03-15 |
Family
ID=9538263
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH247481D CH247481A (fr) | 1943-12-03 | 1945-05-19 | Pick-up phonographique comportant un cristal piézo-électrique. |
Country Status (2)
Country | Link |
---|---|
CH (1) | CH247481A (fr) |
FR (1) | FR986662A (fr) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE891145C (de) * | 1949-04-20 | 1953-09-24 | Telefunken Gmbh | Piezoelektrischer Tonabnehmer |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3691316A (en) * | 1969-05-09 | 1972-09-12 | Matsushita Electric Ind Co Ltd | Semiconductor stress transducer |
-
1943
- 1943-12-03 FR FR986662D patent/FR986662A/fr not_active Expired
-
1945
- 1945-05-19 CH CH247481D patent/CH247481A/fr unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE891145C (de) * | 1949-04-20 | 1953-09-24 | Telefunken Gmbh | Piezoelektrischer Tonabnehmer |
Also Published As
Publication number | Publication date |
---|---|
FR986662A (fr) | 1951-08-03 |
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