NL7005570A - - Google Patents
Info
- Publication number
- NL7005570A NL7005570A NL7005570A NL7005570A NL7005570A NL 7005570 A NL7005570 A NL 7005570A NL 7005570 A NL7005570 A NL 7005570A NL 7005570 A NL7005570 A NL 7005570A NL 7005570 A NL7005570 A NL 7005570A
- Authority
- NL
- Netherlands
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
- H04R25/00—Deaf-aid sets, i.e. electro-acoustic or electro-mechanical hearing aids; Electric tinnitus maskers providing an auditory perception
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/30—Automatic control in amplifiers having semiconductor devices
- H03G3/3005—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers
- H03G3/301—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable
- H03G3/3015—Automatic control in amplifiers having semiconductor devices in amplifiers suitable for low-frequencies, e.g. audio amplifiers the gain being continuously variable using diodes or transistors
Landscapes
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Neurosurgery (AREA)
- Otolaryngology (AREA)
- Physics & Mathematics (AREA)
- Acoustics & Sound (AREA)
- Signal Processing (AREA)
- Amplifiers (AREA)
- Control Of Amplification And Gain Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19691927848 DE1927848C3 (en) | 1969-05-31 | Hearing aid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL7005570A true NL7005570A (en) | 1970-12-02 |
Family
ID=5735760
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL7005570A NL7005570A (en) | 1969-05-31 | 1970-04-17 |
Country Status (5)
| Country | Link |
|---|---|
| AT (1) | AT302432B (en) |
| CH (1) | CH505526A (en) |
| DK (1) | DK124579B (en) |
| GB (1) | GB1316631A (en) |
| NL (1) | NL7005570A (en) |
-
1970
- 1970-04-01 AT AT295570A patent/AT302432B/en not_active IP Right Cessation
- 1970-04-17 NL NL7005570A patent/NL7005570A/xx unknown
- 1970-04-23 CH CH622670A patent/CH505526A/en not_active IP Right Cessation
- 1970-04-23 DK DK205670A patent/DK124579B/en unknown
- 1970-06-01 GB GB2637870A patent/GB1316631A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CH505526A (en) | 1971-03-31 |
| DK124579B (en) | 1972-10-30 |
| DE1927848A1 (en) | 1970-12-03 |
| DE1927848B2 (en) | 1975-06-19 |
| AT302432B (en) | 1972-10-10 |
| GB1316631A (en) | 1973-05-09 |