DE96332C - - Google Patents
Info
- Publication number
- DE96332C DE96332C DENDAT96332D DE96332DA DE96332C DE 96332 C DE96332 C DE 96332C DE NDAT96332 D DENDAT96332 D DE NDAT96332D DE 96332D A DE96332D A DE 96332DA DE 96332 C DE96332 C DE 96332C
- Authority
- DE
- Germany
- Prior art keywords
- microphone
- telephone
- record
- magnetic
- induction coil
- 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.)
- Active
Links
- 230000005291 magnetic effect Effects 0.000 claims description 9
- 230000006698 induction Effects 0.000 claims description 7
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical group [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- 239000000463 material Substances 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 2
- 239000000696 magnetic material Substances 0.000 claims description 2
- 239000000945 filler Substances 0.000 claims 1
- 229910052799 carbon Inorganic materials 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 6
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000003575 carbonaceous material Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 239000007779 soft material Substances 0.000 description 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
- H04R21/00—Variable-resistance transducers
- H04R21/02—Microphones
- H04R21/021—Microphones with granular resistance material
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Telephone Set Structure (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE96332C true DE96332C (cg-RX-API-DMAC7.html) |
Family
ID=367483
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT96332D Active DE96332C (cg-RX-API-DMAC7.html) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE96332C (cg-RX-API-DMAC7.html) |
-
0
- DE DENDAT96332D patent/DE96332C/de active Active
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