DE283804C - - Google Patents
Info
- Publication number
- DE283804C DE283804C DENDAT283804D DE283804DA DE283804C DE 283804 C DE283804 C DE 283804C DE NDAT283804 D DENDAT283804 D DE NDAT283804D DE 283804D A DE283804D A DE 283804DA DE 283804 C DE283804 C DE 283804C
- Authority
- DE
- Germany
- Prior art keywords
- electrode
- powder
- coal
- mass
- microphone
- 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
- 239000003245 coal Substances 0.000 claims description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 10
- 239000000843 powder Substances 0.000 claims description 7
- 229910052799 carbon Inorganic materials 0.000 claims description 4
- 239000003795 chemical substances by application Substances 0.000 claims 1
- 239000008187 granular material Substances 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 2
- 238000004804 winding Methods 0.000 description 2
- 241000947840 Alteromonadales Species 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002085 persistent effect Effects 0.000 description 1
- 229910052697 platinum Inorganic materials 0.000 description 1
- 230000001105 regulatory effect Effects 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)
- Carbon And Carbon Compounds (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE283804C true DE283804C (enrdf_load_stackoverflow) |
Family
ID=539350
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT283804D Active DE283804C (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE283804C (enrdf_load_stackoverflow) |
-
0
- DE DENDAT283804D patent/DE283804C/de active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| DE283804C (enrdf_load_stackoverflow) | ||
| DE839980C (de) | Verfahren zum Entlueften und Abschliessen eines Gefaesses | |
| DE362076C (de) | Vorrichtung zum Anzeigen des kritischen Punktes von erhitzten magnetisierbaren Stoffen, bei welcher eine unter Strom zu setzende, den in einer Heizkammer eingebrachten Stoff magnetisierende Windung und eine Magnetnadel vorgesehen sind | |
| DE2005742A1 (de) | Beweglicher Kontaktträger für elektrische Schalter | |
| DE103790C (enrdf_load_stackoverflow) | ||
| DE19622291C1 (de) | Verfahren und Vorrichtung zur Überfüllüberwachung | |
| DE295745C (enrdf_load_stackoverflow) | ||
| DE402638C (de) | Einrichtung zum elektrischen Anschweissen von Metallstiften u. dgl. an Metallkoerper | |
| DE879737C (de) | Entladungsgefaess mit nicht fremdbeheizter Kathode, insbesondere fuer Impulsbetrieb | |
| DE288369C (enrdf_load_stackoverflow) | ||
| DE612540C (de) | Quecksilberkippschalter | |
| DE855745C (de) | Vorrichtung zum Erhitzen von Metall-Werkstuecken mittels Hochfrequenzstroemen | |
| DE843860C (de) | Schalter mit Zeitwerk | |
| DE866222C (de) | Schweissanordnung | |
| DE21239C (de) | Neuerungen an elektrischen Lampen und deren Zubehör | |
| DE228809C (enrdf_load_stackoverflow) | ||
| DE283030C (enrdf_load_stackoverflow) | ||
| DE1456754A1 (de) | Zufuehtungsvorrichtung fuer teilchenfoermiges Material | |
| DE283888C (enrdf_load_stackoverflow) | ||
| DE827675C (de) | Zubereitung von Mikrofon-Kohle | |
| DE2343414C3 (de) | Vorrichtung zur Regelung der Temperatur der Bitumenfüllung eines mit Gas betriebenen Bitumenkochers | |
| DE272314C (enrdf_load_stackoverflow) | ||
| DE56901C (de) | Elektrische Signalvorrichtung | |
| DE167897C (enrdf_load_stackoverflow) | ||
| DE431292C (de) | Blitzlichtlampe |