DE114561C - - Google Patents
Info
- Publication number
- DE114561C DE114561C DENDAT114561D DE114561DA DE114561C DE 114561 C DE114561 C DE 114561C DE NDAT114561 D DENDAT114561 D DE NDAT114561D DE 114561D A DE114561D A DE 114561DA DE 114561 C DE114561 C DE 114561C
- Authority
- DE
- Germany
- Prior art keywords
- coal
- microphones
- transmission
- heated
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 9
- 239000003245 coal Substances 0.000 claims description 6
- 230000005540 biological transmission Effects 0.000 claims description 3
- 229910052799 carbon Inorganic materials 0.000 claims description 3
- 239000003610 charcoal Substances 0.000 description 2
- 238000010792 warming Methods 0.000 description 2
- 230000000694 effects Effects 0.000 description 1
- 230000002349 favourable Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 239000011872 intimate mixture Substances 0.000 description 1
- 239000002184 metal 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
Description
KAISERLICHESIMPERIAL
PATENTAMT.PATENT OFFICE.
KLASSE 21«.CLASS 21 «.
Der Zweck der vorliegenden Erfindung ist, die Uebertragung durch Mikrophone deutlicher und stärker zu machen; namentlich in erster Richtung wird durch die Anwendung der Erfindung ein wesentlicher Vortheil erzielt.The purpose of the present invention is to make the transmission by microphones clearer and make it stronger; namely in the first direction is through the application of the invention achieved an essential advantage.
Die Erfindung besteht in der Anwendung von Wärme auf die Kohlenkörper von Mikrophonen, im Besonderen auf die mit Kohlenklein arbeitenden Mikrophone. The invention consists in the application of heat to the carbon bodies of microphones, Especially the microphones that work with coal.
Die besten Resultate werden erzielt, wenn dieses Kohlenklein aus Kohlen besteht, welche eine innige Mischung von Kohle mit einem leitenden Metall bilden und dadurch selbst eine vielfach verstärkte Leitungsfähigkeit erhalten. The best results are obtained when this little coal consists of coals, which form an intimate mixture of carbon with a conductive metal and thereby itself receive a multiple strengthened leadership ability.
Es ist eine eigenthümliche Beobachtung, dafs bei der Erwärmung der Kohle die Nebengeräusche verschwinden.It is a peculiar observation that the background noises are produced when the coal is heated disappear.
Die Erwärmung kann bis zur Rothglut getrieben werden, es ist jedoch nicht nothwendig, sie so hoch zu treiben.The warming can be carried to red embers, but it is not necessary to drive her so high
Bei Temperaturen von etwa ioo° werden praktisch günstige Resultate erzielt.At temperatures of about 100 °, practically favorable results are achieved.
Die Kohle hält die Wärme in der Weise genügend, dafs es nicht nothwendig ist, während der ganzen Zeit des Sprechens eine Wärmequelle auf die Kohle einwirken zu lassen, vielmehr wird in der Regel eine beim Beginn des Sprechens gleichzeitig mit dem Anrufen bewirkte Erwärmung für die Dauer eines Gesprächs genügend anhalten. Die Art der Wärmequelle ist gleichgültig.The coal keeps the heat sufficiently in such a way that it is not necessary while to let a heat source act on the charcoal the whole time of speaking, rather one is usually used during Beginning of speaking at the same time as calling caused warming for the duration stop a conversation sufficiently. The type of heat source does not matter.
Am zweckmäfsigsten ist jedoch die Erwärmung durch den elektrischen Strom. Es kann dabei der Mikrophonstrom selbst benutzt werden.The most expedient, however, is the heating by the electric current. It can the microphone current itself can be used.
Aehnliche günstige Wirkungen wie mit Kohlenklein ergeben sich auch bei Anwendung von Mikrophonkohle in anderen Formen.Similar beneficial effects as with coal are also obtained when used of microphone charcoal in other forms.
Claims (2)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| DE114561C true DE114561C (en) |
Family
ID=384056
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DENDAT114561D Active DE114561C (en) |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE114561C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6827371B2 (en) | 2001-03-31 | 2004-12-07 | Bayerische Motoren Werke Aktiengesellschaft | Passenger car having a fuel tank mounted between the vehicle seats and method of making and using same |
-
0
- DE DENDAT114561D patent/DE114561C/de active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6827371B2 (en) | 2001-03-31 | 2004-12-07 | Bayerische Motoren Werke Aktiengesellschaft | Passenger car having a fuel tank mounted between the vehicle seats and method of making and using same |
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