FR1544994A - Variable band filter circuit - Google Patents
Variable band filter circuitInfo
- Publication number
- FR1544994A FR1544994A FR128712A FR128712A FR1544994A FR 1544994 A FR1544994 A FR 1544994A FR 128712 A FR128712 A FR 128712A FR 128712 A FR128712 A FR 128712A FR 1544994 A FR1544994 A FR 1544994A
- Authority
- FR
- France
- Prior art keywords
- filter circuit
- band filter
- variable band
- variable
- circuit
- 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
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/16—Automatic control
- H03G5/24—Automatic control in frequency-selective amplifiers
- H03G5/28—Automatic control in frequency-selective amplifiers having semiconductor devices
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/0005—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal
- H03G1/0035—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements
- H03G1/0052—Circuits characterised by the type of controlling devices operated by a controlling current or voltage signal using continuously variable impedance elements using diodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03H—IMPEDANCE NETWORKS, e.g. RESONANT CIRCUITS; RESONATORS
- H03H11/00—Networks using active elements
- H03H11/02—Multiple-port networks
- H03H11/04—Frequency selective two-port networks
- H03H11/12—Frequency selective two-port networks using amplifiers with feedback
- H03H11/1213—Frequency selective two-port networks using amplifiers with feedback using transistor amplifiers
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
FR128712A FR1544994A (en) | 1966-12-14 | 1967-11-17 | Variable band filter circuit |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US60173266A | 1966-12-14 | 1966-12-14 | |
FR128712A FR1544994A (en) | 1966-12-14 | 1967-11-17 | Variable band filter circuit |
Publications (1)
Publication Number | Publication Date |
---|---|
FR1544994A true FR1544994A (en) | 1968-11-08 |
Family
ID=26180929
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR128712A Expired FR1544994A (en) | 1966-12-14 | 1967-11-17 | Variable band filter circuit |
Country Status (1)
Country | Link |
---|---|
FR (1) | FR1544994A (en) |
-
1967
- 1967-11-17 FR FR128712A patent/FR1544994A/en not_active Expired
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