BE474392A - - Google Patents
Info
- Publication number
- BE474392A BE474392A BE474392DA BE474392A BE 474392 A BE474392 A BE 474392A BE 474392D A BE474392D A BE 474392DA BE 474392 A BE474392 A BE 474392A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H7/00—Multiple-port networks comprising only passive electrical elements as network components
- H03H7/01—Frequency selective two-port networks
- H03H7/0153—Electrical filters; Controlling thereof
- H03H7/0161—Bandpass filters
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
- H03D7/08—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between the same two electrodes
-
- 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
- H03F1/08—Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/54—Amplifiers using transit-time effect in tubes or semiconductor devices
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US678709A US2609460A (en) | 1946-06-22 | 1946-06-22 | Tunable constant band-width signal-translating stage |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE474392A true BE474392A (en:Method) |
Family
ID=24723940
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE474392D BE474392A (en:Method) | 1946-06-22 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2609460A (en:Method) |
| BE (1) | BE474392A (en:Method) |
| DE (1) | DE841471C (en:Method) |
| FR (1) | FR948502A (en:Method) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3063020A (en) * | 1959-03-24 | 1962-11-06 | Blonder Tongue Elect | Transistor amplifier system |
Family Cites Families (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB331007A (en) * | 1929-04-08 | 1930-06-26 | Gramophone Co Ltd | Improvements in or relating to thermionic valve circuits |
| BE403264A (en:Method) * | 1933-05-23 | |||
| US2077465A (en) * | 1934-11-07 | 1937-04-20 | Radio Patents Corp | Radio circuits |
| US2122283A (en) * | 1937-03-09 | 1938-06-28 | Rca Corp | Frequency converter |
| US2170645A (en) * | 1938-01-03 | 1939-08-22 | Bell Telephone Labor Inc | High frequency amplifier |
| US2279543A (en) * | 1938-10-29 | 1942-04-14 | Hazeltine Corp | Ultra-high-frequency signaltranslating stage |
| GB533558A (en) * | 1939-11-07 | 1941-02-14 | Gen Electric Co Ltd | Improvements in high frequency amplifiers including thermionic valves |
| BE446775A (en:Method) * | 1941-08-08 | |||
| US2486986A (en) * | 1943-06-28 | 1949-11-01 | Rca Corp | Permeability tuning system |
-
0
- BE BE474392D patent/BE474392A/xx unknown
-
1946
- 1946-06-22 US US678709A patent/US2609460A/en not_active Expired - Lifetime
-
1947
- 1947-06-23 FR FR948502D patent/FR948502A/fr not_active Expired
-
1950
- 1950-09-30 DE DEH5957A patent/DE841471C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DE841471C (de) | 1952-06-16 |
| FR948502A (fr) | 1949-08-03 |
| US2609460A (en) | 1952-09-02 |