GB662995A - An improved tunable band pass coupling circuit for electronic amplifiers - Google Patents
An improved tunable band pass coupling circuit for electronic amplifiersInfo
- Publication number
- GB662995A GB662995A GB14246/49A GB1424649A GB662995A GB 662995 A GB662995 A GB 662995A GB 14246/49 A GB14246/49 A GB 14246/49A GB 1424649 A GB1424649 A GB 1424649A GB 662995 A GB662995 A GB 662995A
- Authority
- GB
- United Kingdom
- Prior art keywords
- coupled
- coupling circuit
- band pass
- tunable band
- electronic amplifiers
- 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
- 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
Landscapes
- Amplifiers (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
662,995. Electric filters. RADIO CORPORATION OF AMERICA. May 27, 1949 [May 28, 1948], No. 14246/49. Class 40 (viii). [Also in Group XL (c)] An intervalve coupling circuit comprises a pair of inductively-tuned circuits coupled by means of an impedance in the form of a seriesresonant circuit resonating at a higher frequency. Variable inductances 28, 40, Fig. 1, resonate with the inherent valve capacities 30, 48, respectively, and are. coupled by means of inductance 36 and capacity 38, the condenser 32 comprising a D.C. blocking element. The series circuit 36, 38 resonates at a frequency above that to which the coupled circuits tune and is utilized to obtain a constant bandwidth, to reduce the response to image frequencies in a superheterodyne receiver, and to reduce oscillator radiation. The Specification describes a tuning arrangement for a television receiver, Fig. 2 (not shown), which embodies the invention (see Group XL (c)).
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US662995XA | 1948-05-28 | 1948-05-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB662995A true GB662995A (en) | 1951-12-12 |
Family
ID=22068619
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB14246/49A Expired GB662995A (en) | 1948-05-28 | 1949-05-27 | An improved tunable band pass coupling circuit for electronic amplifiers |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB662995A (en) |
-
1949
- 1949-05-27 GB GB14246/49A patent/GB662995A/en not_active Expired
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