NL6919529A - - Google Patents
Info
- Publication number
- NL6919529A NL6919529A NL6919529A NL6919529A NL6919529A NL 6919529 A NL6919529 A NL 6919529A NL 6919529 A NL6919529 A NL 6919529A NL 6919529 A NL6919529 A NL 6919529A NL 6919529 A NL6919529 A NL 6919529A
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/02—Manually-operated control
- H03G3/04—Manually-operated control in untuned amplifiers
- H03G3/10—Manually-operated control in untuned amplifiers having semiconductor devices
- H03G3/12—Manually-operated control in untuned amplifiers having semiconductor devices incorporating negative feedback
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L29/00—Semiconductor devices specially adapted for rectifying, amplifying, oscillating or switching and having potential barriers; Capacitors or resistors having potential barriers, e.g. a PN-junction depletion layer or carrier concentration layer; Details of semiconductor bodies or of electrodes thereof ; Multistep manufacturing processes therefor
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/30—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters
- H03F1/302—Modifications of amplifiers to reduce influence of variations of temperature or supply voltage or other physical parameters in bipolar transistor amplifiers
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/34—Negative-feedback-circuit arrangements with or without positive feedback
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/181—Low-frequency amplifiers, e.g. audio preamplifiers
- H03F3/183—Low-frequency amplifiers, e.g. audio preamplifiers with semiconductor devices only
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/02—Manually-operated control
- H03G3/04—Manually-operated control in untuned amplifiers
- H03G3/10—Manually-operated control in untuned amplifiers having semiconductor devices
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04R—LOUDSPEAKERS, MICROPHONES, GRAMOPHONE PICK-UPS OR LIKE ACOUSTIC ELECTROMECHANICAL TRANSDUCERS; DEAF-AID SETS; PUBLIC ADDRESS SYSTEMS
- H04R2225/00—Details of deaf aids covered by H04R25/00, not provided for in any of its subgroups
- H04R2225/33—Aspects relating to adaptation of the battery voltage, e.g. its regulation, increase or decrease
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Multimedia (AREA)
- Physics & Mathematics (AREA)
- Ceramic Engineering (AREA)
- Condensed Matter Physics & Semiconductors (AREA)
- General Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- Amplifiers (AREA)
- Control Of Amplification And Gain Control (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB6195868 | 1968-12-31 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| NL6919529A true NL6919529A (US20090163788A1-20090625-C00002.png) | 1970-07-02 |
| NL169004C NL169004C (nl) | 1982-05-17 |
Family
ID=10487701
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NLAANVRAGE6919529,A NL169004C (nl) | 1968-12-31 | 1969-12-30 | Batterij-gevoede meertraps transistorversterker met een terugkoppellus voor gelijkstroom. |
Country Status (5)
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4543453A (en) * | 1983-03-30 | 1985-09-24 | Beltone Electronics Corporation | Electronic hearing aid control circuit |
| US5131046A (en) * | 1989-11-03 | 1992-07-14 | Etymotic Research Inc. | High fidelity hearing aid amplifier |
| JP2765257B2 (ja) * | 1991-04-11 | 1998-06-11 | 日本電気株式会社 | 増幅回路 |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3166719A (en) * | 1961-03-07 | 1965-01-19 | Warwick Electronics Inc | Transistorized sliding class a amplifier |
| US3096487A (en) * | 1961-04-03 | 1963-07-02 | Willis L Lee | Directly coupled transistor amplifier with positive and negative feedback |
| US3303380A (en) * | 1963-11-08 | 1967-02-07 | Burroughs Corp | Direct coupled transistor amplifier having complementary symmetry output and switchable feedback loop for driving a deflection coil |
| US3320365A (en) * | 1964-06-08 | 1967-05-16 | A V Electronics Inc | Self-biasing amplifier |
| US3457519A (en) * | 1967-07-12 | 1969-07-22 | Westinghouse Electric Corp | High input impedance amplifier |
| US3519946A (en) * | 1968-09-30 | 1970-07-07 | Hans R Camezind | Class a audio amplifier |
| US3555442A (en) * | 1969-05-12 | 1971-01-12 | Philco Ford Corp | Transistorized push-pull amplifier circuit utilizing dual bias supply |
-
1968
- 1968-12-31 GB GB6195868A patent/GB1297625A/en not_active Expired
-
1969
- 1969-12-23 DK DK682469AA patent/DK142437B/da not_active Application Discontinuation
- 1969-12-27 DE DE19691965163 patent/DE1965163B2/de not_active Withdrawn
- 1969-12-29 US US00888343A patent/US3729588A/en not_active Expired - Lifetime
- 1969-12-30 NL NLAANVRAGE6919529,A patent/NL169004C/xx active
Also Published As
| Publication number | Publication date |
|---|---|
| DK142437B (da) | 1980-10-27 |
| GB1297625A (US20090163788A1-20090625-C00002.png) | 1972-11-29 |
| DE1965163B2 (de) | 1977-05-18 |
| US3729588A (en) | 1973-04-24 |
| DE1965163A1 (de) | 1970-09-24 |
| NL169004C (nl) | 1982-05-17 |
