FR1426999A - Générateur de fréquence variable - Google Patents
Générateur de fréquence variableInfo
- Publication number
- FR1426999A FR1426999A FR994712A FR994712A FR1426999A FR 1426999 A FR1426999 A FR 1426999A FR 994712 A FR994712 A FR 994712A FR 994712 A FR994712 A FR 994712A FR 1426999 A FR1426999 A FR 1426999A
- Authority
- FR
- France
- Prior art keywords
- variable frequency
- frequency generator
- generator
- variable
- frequency
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/14—Investigating or analyzing materials by the use of thermal means by using distillation, extraction, sublimation, condensation, freezing, or crystallisation
-
- 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
- H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
- H03B5/24—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator active element in amplifier being semiconductor device
-
- 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
- H03B5/20—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator
- H03B5/26—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising resistance and either capacitance or inductance, e.g. phase-shift oscillator frequency-determining element being part of bridge circuit in closed ring around which signal is transmitted; frequency-determining element being connected via a bridge circuit to such a closed ring, e.g. Wien-Bridge oscillator, parallel-T oscillator
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03C—MODULATION
- H03C3/00—Angle modulation
- H03C3/10—Angle modulation by means of variable impedance
- H03C3/24—Angle modulation by means of variable impedance by means of a variable resistive element, e.g. tube
Landscapes
- Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Measurement Of Resistance Or Impedance (AREA)
- Measuring Instrument Details And Bridges, And Automatic Balancing Devices (AREA)
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR994712A FR1426999A (fr) | 1964-11-12 | 1964-11-12 | Générateur de fréquence variable |
US500856A US3302129A (en) | 1964-11-12 | 1965-10-22 | Variable-frequency generator with three feedback controls |
LU49810A LU49810A1 (fr) | 1964-11-12 | 1965-11-10 | |
BE672135D BE672135A (fr) | 1964-11-12 | 1965-11-10 | |
GB47954/65A GB1133001A (en) | 1964-11-12 | 1965-11-11 | Improvements in or relating to variable frequency generators |
NL6514702A NL6514702A (fr) | 1964-11-12 | 1965-11-12 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR994712A FR1426999A (fr) | 1964-11-12 | 1964-11-12 | Générateur de fréquence variable |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1426999A true FR1426999A (fr) | 1966-02-04 |
Family
ID=8842347
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR994712A Expired FR1426999A (fr) | 1964-11-12 | 1964-11-12 | Générateur de fréquence variable |
Country Status (6)
Country | Link |
---|---|
US (1) | US3302129A (fr) |
BE (1) | BE672135A (fr) |
FR (1) | FR1426999A (fr) |
GB (1) | GB1133001A (fr) |
LU (1) | LU49810A1 (fr) |
NL (1) | NL6514702A (fr) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3883826A (en) * | 1971-07-15 | 1975-05-13 | Ici Ltd | Adjustable frequency oscillator with regenerative feedback and a coupling unit including a differential amplifier for adjusting the feedback |
-
1964
- 1964-11-12 FR FR994712A patent/FR1426999A/fr not_active Expired
-
1965
- 1965-10-22 US US500856A patent/US3302129A/en not_active Expired - Lifetime
- 1965-11-10 LU LU49810A patent/LU49810A1/xx unknown
- 1965-11-10 BE BE672135D patent/BE672135A/xx unknown
- 1965-11-11 GB GB47954/65A patent/GB1133001A/en not_active Expired
- 1965-11-12 NL NL6514702A patent/NL6514702A/xx unknown
Also Published As
Publication number | Publication date |
---|---|
LU49810A1 (fr) | 1966-05-10 |
NL6514702A (fr) | 1966-05-13 |
BE672135A (fr) | 1966-05-10 |
US3302129A (en) | 1967-01-31 |
GB1133001A (en) | 1968-11-06 |
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