NL53239C - - Google Patents
Info
- Publication number
- NL53239C NL53239C NL53239DA NL53239C NL 53239 C NL53239 C NL 53239C NL 53239D A NL53239D A NL 53239DA NL 53239 C NL53239 C NL 53239C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/02—Remote control of amplification, tone or bandwidth
-
- 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
- H03G3/06—Manually-operated control in untuned amplifiers having discharge tubes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/02—Manually-operated control
- H03G3/14—Manually-operated control in frequency-selective amplifiers
- H03G3/16—Manually-operated control in frequency-selective amplifiers having discharge tubes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G9/00—Combinations of two or more types of control, e.g. gain control and tone control
- H03G9/02—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers
- H03G9/04—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having discharge tubes
- H03G9/06—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having discharge tubes for gain control and tone control
- H03G9/08—Combinations of two or more types of control, e.g. gain control and tone control in untuned amplifiers having discharge tubes for gain control and tone control incorporating negative feedback
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3325137A GB506659A (en) | 1937-12-01 | 1937-12-01 | Improvements in or relating to remote control systems for volume or gain control of electron discharge device amplifiers |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL53239C true NL53239C (OSRAM) | 1942-05-15 |
Family
ID=10350491
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL53239D NL53239C (OSRAM) | 1937-12-01 | 1938-12-01 |
Country Status (3)
| Country | Link |
|---|---|
| DE (1) | DE757448C (OSRAM) |
| GB (1) | GB506659A (OSRAM) |
| NL (1) | NL53239C (OSRAM) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2563245A (en) * | 1944-05-12 | 1951-08-07 | Cossor Ltd A C | Voltage combining circuits |
| DE1007812B (de) * | 1955-08-27 | 1957-05-09 | Nordwestdeutscher Rundfunk Ans | Vorverstaerkerstufe mit Roehre oder Transistor und mit Verstaerkungsregelung |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1769256A (en) * | 1927-03-24 | 1930-07-01 | Allen S Clarke | Radioreceiver |
| GB329689A (en) * | 1929-01-24 | 1930-05-26 | Albert Hall | Improvements relating to volume control devices or systems for radio receiving apparatus |
| US2022972A (en) * | 1934-08-21 | 1935-12-03 | Bell Telephone Labor Inc | Variable gain amplifier |
-
1937
- 1937-12-01 GB GB3325137A patent/GB506659A/en not_active Expired
-
1938
- 1938-12-01 NL NL53239D patent/NL53239C/xx active
- 1938-12-02 DE DEM143522D patent/DE757448C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE757448C (de) | 1953-04-27 |
| GB506659A (en) | 1939-06-01 |