BE475106A - - Google Patents
Info
- Publication number
- BE475106A BE475106A BE475106DA BE475106A BE 475106 A BE475106 A BE 475106A BE 475106D A BE475106D A BE 475106DA BE 475106 A BE475106 A BE 475106A
- Authority
- BE
- Belgium
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/02—Details
- H03C3/04—Means in or combined with modulating stage for reducing amplitude modulation
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/30—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator
- H03B5/32—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator
- H03B5/34—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator active element in amplifier being vacuum tube
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/10—Angle modulation by means of variable impedance
- H03C3/12—Angle modulation by means of variable impedance by means of a variable reactive element
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB21971/46A GB618967A (en) | 1946-07-23 | 1946-07-23 | Improvements in or relating to piezo-electric crystal circuit arrangements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE475106A true BE475106A (US06811534-20041102-M00003.png) | 1947-09-20 |
Family
ID=32232474
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE475106D BE475106A (US06811534-20041102-M00003.png) | 1946-07-23 | 1947-08-05 |
Country Status (6)
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB618967A (en) * | 1946-07-23 | 1949-03-02 | Marconi Wireless Telegraph Co | Improvements in or relating to piezo-electric crystal circuit arrangements |
| US2646509A (en) * | 1949-03-30 | 1953-07-21 | Marconi Wireless Telegraph Co | Piezoelectric crystal oscillator |
| US2683810A (en) * | 1949-03-30 | 1954-07-13 | Marconi Wireless Telegraph Co | Piezoelectric crystal oscillator |
| US2720591A (en) * | 1950-02-01 | 1955-10-11 | Arf Products | Frequency modulation transmitter |
| DE907190C (de) * | 1950-06-23 | 1954-03-22 | Telefunken Gmbh | Kopplungsschaltung zur Verbindung eines im wesentlichen durch einen piezoelektrischen Kristall gebildeten elektrischen Schwingungskreises mit einem frequenzmodulierbarenOszillator |
| US2898398A (en) * | 1953-08-28 | 1959-08-04 | Rca Corp | Frequency selective circuits |
| US2751498A (en) * | 1954-04-30 | 1956-06-19 | Rca Corp | Crystal controlled oscillator circuit |
| US2962672A (en) * | 1955-11-28 | 1960-11-29 | Blasio Conrad G De | Dual-tube modulator and associated frequency-modulated crystal oscillator circuit therefor |
| US3221268A (en) * | 1955-11-28 | 1965-11-30 | Electronic Measurements Co | Crystal-controlled oscillation generator and associated circuitry |
| US3153221A (en) * | 1957-06-10 | 1964-10-13 | Atlantic Refining Co | F. m. system for seismic exploration |
| DE1114854B (de) * | 1959-12-30 | 1961-10-12 | Philips Patentverwaltung | Quarzstabilisierter, frequenzmodulierbarer Oszillator |
| US3409787A (en) * | 1966-11-15 | 1968-11-05 | Air Force Usa | Piezoelectric transducer system |
| US3868606A (en) * | 1973-09-28 | 1975-02-25 | Westinghouse Electric Corp | Q-multiplied crystal resonator for improved hf and vhf source stabilization |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2029488A (en) * | 1932-04-16 | 1936-02-04 | Earl L Koch Holding Corp | Negative resistance crystal controlled oscillator |
| US2043242A (en) * | 1933-06-17 | 1936-06-09 | Louis A Gebhard | High frequency oscillator |
| US2092147A (en) * | 1934-08-29 | 1937-09-07 | Rca Corp | Crystal controlled oscillator |
| US2128837A (en) * | 1936-04-16 | 1938-08-30 | Gen Electric | Oscillator |
| US2175174A (en) * | 1938-03-16 | 1939-10-10 | Collins Radio Co | Dynatron oscillation system |
| US2274347A (en) * | 1938-04-14 | 1942-02-24 | Rca Corp | Negative resistance circuit arrangement |
| US2454933A (en) * | 1943-02-17 | 1948-11-30 | Rca Corp | Frequency modulation |
| US2442770A (en) * | 1943-04-20 | 1948-06-08 | Sperry Corp | Pulse generator |
| US2424246A (en) * | 1943-09-16 | 1947-07-22 | Bell Telephone Labor Inc | Frequency-modulated crystal oscillator |
| GB618967A (en) * | 1946-07-23 | 1949-03-02 | Marconi Wireless Telegraph Co | Improvements in or relating to piezo-electric crystal circuit arrangements |
-
1946
- 1946-07-23 GB GB21971/46A patent/GB618967A/en not_active Expired
- 1946-11-21 GB GB34576/46A patent/GB622140A/en not_active Expired
-
1947
- 1947-08-05 BE BE475106D patent/BE475106A/xx unknown
- 1947-08-21 US US769831A patent/US2551809A/en not_active Expired - Lifetime
- 1947-11-12 US US785344A patent/US2600124A/en not_active Expired - Lifetime
- 1947-12-29 CH CH268039D patent/CH268039A/fr unknown
- 1947-12-30 FR FR959782D patent/FR959782A/fr not_active Expired
- 1947-12-30 FR FR958935D patent/FR958935A/fr not_active Expired
- 1947-12-31 CH CH271791D patent/CH271791A/fr unknown
-
1949
- 1949-01-01 DE DEP30036A patent/DE828262C/de not_active Expired
- 1949-01-01 DE DEP30037A patent/DE832614C/de not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| GB622140A (en) | 1949-04-27 |
| FR959782A (US06811534-20041102-M00003.png) | 1950-04-05 |
| GB618967A (en) | 1949-03-02 |
| CH268039A (fr) | 1950-04-30 |
| US2551809A (en) | 1951-05-08 |
| DE828262C (de) | 1952-01-17 |
| DE832614C (de) | 1952-02-25 |
| US2600124A (en) | 1952-06-10 |
| FR958935A (US06811534-20041102-M00003.png) | 1950-03-21 |
| CH271791A (fr) | 1950-11-15 |
