DE249729C - - Google Patents
Info
- Publication number
- DE249729C DE249729C DENDAT249729D DE249729DA DE249729C DE 249729 C DE249729 C DE 249729C DE NDAT249729 D DENDAT249729 D DE NDAT249729D DE 249729D A DE249729D A DE 249729DA DE 249729 C DE249729 C DE 249729C
- Authority
- DE
- Germany
- Prior art keywords
- electrodes
- microphone
- cells
- electrode
- liquid
- 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
- 238000001816 cooling Methods 0.000 claims description 11
- 239000002826 coolant Substances 0.000 claims description 4
- 239000007788 liquid Substances 0.000 description 8
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 7
- 229910052799 carbon Inorganic materials 0.000 description 7
- 239000000110 cooling liquid Substances 0.000 description 4
- 239000012528 membrane Substances 0.000 description 3
- 239000012153 distilled water Substances 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229920001875 Ebonite Polymers 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- RRHGJUQNOFWUDK-UHFFFAOYSA-N Isoprene Chemical compound CC(=C)C=C RRHGJUQNOFWUDK-UHFFFAOYSA-N 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000005868 electrolysis reaction Methods 0.000 description 1
- 230000008020 evaporation Effects 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 229910052709 silver Inorganic materials 0.000 description 1
- 239000004332 silver Substances 0.000 description 1
- 239000007787 solid 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)
- Details Of Audible-Bandwidth Transducers (AREA)
- Connection Of Batteries Or Terminals (AREA)
- Piezo-Electric Transducers For Audible Bands (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE249729T |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE249729C true DE249729C (cg-RX-API-DMAC7.html) |
Family
ID=5935810
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT228135D Active DE228135C (cg-RX-API-DMAC7.html) | |||
| DENDAT228627D Active DE228627C (cg-RX-API-DMAC7.html) | |||
| DENDAT249729D Active DE249729C (cg-RX-API-DMAC7.html) |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT228135D Active DE228135C (cg-RX-API-DMAC7.html) | |||
| DENDAT228627D Active DE228627C (cg-RX-API-DMAC7.html) |
Country Status (1)
| Country | Link |
|---|---|
| DE (3) | DE249729C (cg-RX-API-DMAC7.html) |
-
0
- DE DENDAT228135D patent/DE228135C/de active Active
- DE DENDAT228627D patent/DE228627C/de active Active
- DE DENDAT249729D patent/DE249729C/de active Active
Also Published As
| Publication number | Publication date |
|---|---|
| DE228135C (cg-RX-API-DMAC7.html) | |
| DE228627C (cg-RX-API-DMAC7.html) |
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