BE494401A - - Google Patents
Info
- Publication number
- BE494401A BE494401A BE494401DA BE494401A BE 494401 A BE494401 A BE 494401A BE 494401D A BE494401D A BE 494401DA BE 494401 A BE494401 A BE 494401A
- Authority
- BE
- Belgium
- Prior art keywords
- amplifier
- telephone set
- set according
- germanium
- microphone
- Prior art date
Links
- 229910052732 germanium Inorganic materials 0.000 claims description 8
- GNPVGFCGXDBREM-UHFFFAOYSA-N germanium atom Chemical compound [Ge] GNPVGFCGXDBREM-UHFFFAOYSA-N 0.000 claims description 8
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 7
- 229910052721 tungsten Inorganic materials 0.000 claims description 7
- 239000010937 tungsten Substances 0.000 claims description 7
- 239000004065 semiconductor Substances 0.000 claims description 6
- 238000004804 winding Methods 0.000 description 6
- 230000006698 induction Effects 0.000 description 4
- 230000005540 biological transmission Effects 0.000 description 2
- 239000008187 granular material Substances 0.000 description 2
- 230000003321 amplification Effects 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04M—TELEPHONIC COMMUNICATION
- H04M1/00—Substation equipment, e.g. for use by subscribers
- H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
- H04M1/6008—Substation equipment, e.g. for use by subscribers including speech amplifiers in the transmitter circuit
Landscapes
- Engineering & Computer Science (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE494401A true BE494401A (enrdf_load_stackoverflow) |
Family
ID=138168
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE494401D BE494401A (enrdf_load_stackoverflow) |
Country Status (1)
| Country | Link |
|---|---|
| BE (1) | BE494401A (enrdf_load_stackoverflow) |
-
0
- BE BE494401D patent/BE494401A/fr unknown
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