BE471221A - - Google Patents
Info
- Publication number
- BE471221A BE471221A BE471221DA BE471221A BE 471221 A BE471221 A BE 471221A BE 471221D A BE471221D A BE 471221DA BE 471221 A BE471221 A BE 471221A
- Authority
- BE
- Belgium
Links
Classifications
-
- 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
- H03B5/38—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element being electromechanical resonator being a piezoelectric resonator frequency-determining element being connected via bridge circuit to closed ring around which signal is transmitted
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- 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
- H03B5/28—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 active element in amplifier being vacuum tube
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- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/16—Networks for phase shifting
- H03H11/18—Two-port phase shifters providing a predetermined phase shift, e.g. "all-pass" filters
-
- 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
-
- 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
- H03H7/075—Ladder networks, e.g. electric wave filters
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB280652X | 1945-01-01 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| BE471221A true BE471221A (es) |
Family
ID=10269698
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| BE471221D BE471221A (es) | 1945-01-01 |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2611874A (es) |
| BE (1) | BE471221A (es) |
| CH (1) | CH280652A (es) |
| FR (1) | FR939091A (es) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2744228A (en) * | 1951-10-01 | 1956-05-01 | Morrison Montford | Apparatus for reduction of amplitude variation in pulsating voltages |
| US2839685A (en) * | 1955-05-13 | 1958-06-17 | Harvey O Riggs | Fixed frequency oscillator |
| US2860300A (en) * | 1957-05-27 | 1958-11-11 | Thompson Prod Inc | Electric circuit |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1759952A (en) * | 1926-03-01 | 1930-05-27 | American Telephone & Telegraph | Electrical transmission system |
| US1902031A (en) * | 1931-01-06 | 1933-03-21 | American Telephone & Telegraph | Filtering apparatus |
| DE584644C (de) * | 1931-04-26 | 1933-09-22 | Philips Nv | Schaltung, in der ein elektrisches Filter in Verbindung mit Verstaerkerroehren angewendet wird |
| US2031100A (en) * | 1934-09-10 | 1936-02-18 | Rca Corp | Oscillation generator |
| US2163403A (en) * | 1937-07-02 | 1939-06-20 | Bell Telephone Labor Inc | Stabilized oscillator |
| US2240450A (en) * | 1940-01-29 | 1941-04-29 | Bliley Electric Company | Piezoelectric crystal apparatus |
| US2261286A (en) * | 1940-07-13 | 1941-11-04 | Rca Corp | Frequency modulation detector |
-
0
- BE BE471221D patent/BE471221A/xx unknown
-
1946
- 1946-01-05 US US639289A patent/US2611874A/en not_active Expired - Lifetime
- 1946-04-01 FR FR939091D patent/FR939091A/fr not_active Expired
- 1946-07-09 CH CH280652D patent/CH280652A/de unknown
Also Published As
| Publication number | Publication date |
|---|---|
| CH280652A (de) | 1952-01-31 |
| FR939091A (fr) | 1948-11-03 |
| US2611874A (en) | 1952-09-23 |