CH202672A - Kohlekörnermikrophon nach dem Querstromprinzip. - Google Patents
Kohlekörnermikrophon nach dem Querstromprinzip.Info
- Publication number
- CH202672A CH202672A CH202672DA CH202672A CH 202672 A CH202672 A CH 202672A CH 202672D A CH202672D A CH 202672DA CH 202672 A CH202672 A CH 202672A
- Authority
- CH
- Switzerland
- Prior art keywords
- cross
- coal grain
- flow principle
- microphone based
- grain microphone
- Prior art date
Links
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
- H04R21/026—Microphones in which the sound is perpendicular to the current crossing the transducer material
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Electrostatic, Electromagnetic, Magneto- Strictive, And Variable-Resistance Transducers (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE1935S0119731 DE702071C (de) | 1935-09-12 | 1935-09-12 | Kohlemikrofon nach dem Querstromprinzip mit konzentrisch angeordneten Elektroden |
Publications (1)
Publication Number | Publication Date |
---|---|
CH202672A true CH202672A (de) | 1939-01-31 |
Family
ID=7534980
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CH202672D CH202672A (de) | 1935-09-12 | 1937-09-13 | Kohlekörnermikrophon nach dem Querstromprinzip. |
Country Status (3)
Country | Link |
---|---|
CH (1) | CH202672A (xx) |
DE (1) | DE702071C (xx) |
NL (1) | NL54831C (xx) |
-
0
- NL NL54831D patent/NL54831C/xx active
-
1935
- 1935-09-12 DE DE1935S0119731 patent/DE702071C/de not_active Expired
-
1937
- 1937-09-13 CH CH202672D patent/CH202672A/de unknown
Also Published As
Publication number | Publication date |
---|---|
DE702071C (de) | 1941-01-29 |
NL54831C (xx) |
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