GB548539A - Wide-band coupling circuits - Google Patents
Wide-band coupling circuitsInfo
- Publication number
- GB548539A GB548539A GB4796/41A GB479641A GB548539A GB 548539 A GB548539 A GB 548539A GB 4796/41 A GB4796/41 A GB 4796/41A GB 479641 A GB479641 A GB 479641A GB 548539 A GB548539 A GB 548539A
- Authority
- GB
- United Kingdom
- Prior art keywords
- arm
- circuit
- shunt
- inductance
- april
- 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
- H03F—AMPLIFIERS
- H03F1/00—Details of amplifiers with only discharge tubes, only semiconductor devices or only unspecified devices as amplifying elements
- H03F1/42—Modifications of amplifiers to extend the bandwidth
- H03F1/48—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers
- H03F1/50—Modifications of amplifiers to extend the bandwidth of aperiodic amplifiers with tubes only
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
548,539. Filter circuits. PHILCO RADIO & TELEVISION CORPORATION. April 10, 1941, No. 4796. Convention date, April 13, 1940. [Class 40 (iii)] A broad band coupling circuit between a preliminary amplifier V1 and a frequency-changer V2 comprises a shunt resistance arm 4 at the input end, a shunt arm 7, 8 at the output end tuned to the intermediate frequency of the receiver and a series arm 5, 6 of which the inductance is variably coupled to the inductance of the shunt arm and the capacity is adjusted to give the circuit maximum response at the low end of the range of frequencies covered. An example of suitable values of the circuit components for the broadcast band is given. A shielding cam 10 may be provided. Fig. 2 shows the equivalent circuit taking into account the self capacities of the inductances and valves.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US329554A US2252609A (en) | 1940-04-13 | 1940-04-13 | Wide-band coupling circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB548539A true GB548539A (en) | 1942-10-14 |
Family
ID=23285950
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4796/41A Expired GB548539A (en) | 1940-04-13 | 1941-04-10 | Wide-band coupling circuits |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2252609A (en) |
| GB (1) | GB548539A (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2542495A (en) * | 1947-11-19 | 1951-02-20 | Sylvania Electric Prod | Image reduction circuit |
| US2581159A (en) * | 1948-05-28 | 1952-01-01 | Rca Corp | Tunable band pass amplifier for television |
| US2631229A (en) * | 1949-08-05 | 1953-03-10 | Frank O Chesus | Oscillator-mixer circuit with single triode tube |
| US2594347A (en) * | 1949-10-06 | 1952-04-29 | Gen Electric | Intermediate frequency rejection circuit |
| US2982928A (en) * | 1958-04-29 | 1961-05-02 | Albert R Kall | Electric filter |
| US3437934A (en) * | 1966-01-12 | 1969-04-08 | Motorola Inc | Series resonant circuit for coupling output of mixer to input of intermediate frequency amplifier |
| US3958179A (en) * | 1972-07-14 | 1976-05-18 | Mcauley Van A | Wide band ac modulated control networks |
-
1940
- 1940-04-13 US US329554A patent/US2252609A/en not_active Expired - Lifetime
-
1941
- 1941-04-10 GB GB4796/41A patent/GB548539A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2252609A (en) | 1941-08-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US2555906A (en) | Tunable amplifier having a predetermined band-pass characteristic throughout its range | |
| GB548539A (en) | Wide-band coupling circuits | |
| US2281661A (en) | Tuning system | |
| ES294961A3 (en) | Bandpass filter for passing a wide range of frequencies and suppressing a narrow range of frequencies | |
| GB514640A (en) | Image-suppression system for wireless receivers | |
| JPS6043696B2 (en) | VHF tuner interstage tuning coupling circuit | |
| GB668498A (en) | Improvements in or relating to superheterodyne radio-receivers | |
| GB1166986A (en) | Resonant Bandpass Filter having Two Frequency Cancellation Traps | |
| GB617647A (en) | Improvements in or relating to frequency-changing circuits | |
| SE320705B (en) | ||
| GB613099A (en) | Improvements in or relating to input circuits for radio receivers | |
| GB458655A (en) | Improvements in or relating to superheterodyne receiving circuits | |
| GB465030A (en) | Improvements in thermionic amplifiers | |
| GB547677A (en) | Antenna system for modulated-carrier signal receivers | |
| GB1003288A (en) | Improvements relating to transistor circuits | |
| GB887615A (en) | Improvements in or relating to radio frequency reactance amplifiers | |
| GB782761A (en) | Improvements relating to electrical circuit arrangements, especially for ultra shortwave radio reception | |
| GB501644A (en) | Improvements in or relating to radio receivers | |
| GB469579A (en) | Image suppression system for superheterodyne radio receivers | |
| GB535952A (en) | Improvements in image suppression systems in radio receivers | |
| GB613152A (en) | Improvements in or relating to bandspread tuning devices for radio apparatus | |
| GB490732A (en) | Improvements in or relating to thermionic amplifiers | |
| GB198052A (en) | Method and apparatus for selectively transferring electrical oscillatory energy | |
| GB535078A (en) | Tunable selector of uniform band width | |
| GB490138A (en) | Improvements in multi-band radio receivers |