GB1027960A - Improvements in or relating to tuning arrangements for radio receivers - Google Patents
Improvements in or relating to tuning arrangements for radio receiversInfo
- Publication number
- GB1027960A GB1027960A GB1315465A GB1315465A GB1027960A GB 1027960 A GB1027960 A GB 1027960A GB 1315465 A GB1315465 A GB 1315465A GB 1315465 A GB1315465 A GB 1315465A GB 1027960 A GB1027960 A GB 1027960A
- Authority
- GB
- United Kingdom
- Prior art keywords
- waveband
- inductor
- capacitors
- inductance
- march
- 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
- H03J—TUNING RESONANT CIRCUITS; SELECTING RESONANT CIRCUITS
- H03J5/00—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner
- H03J5/24—Discontinuous tuning; Selecting predetermined frequencies; Selecting frequency bands with or without continuous tuning in one or more of the bands, e.g. push-button tuning, turret tuner with a number of separate pretuned tuning circuits or separate tuning elements selectively brought into circuit, e.g. for waveband selection or for television channel selection
Abstract
1,027,960. Waveband switching circuits. TELEFUNKEN PATENTVERWERTUNGS G.m.b.H. March 29, 1965 [March 28, 1964], No. 13154/65. Heading H3Q. In a radio receiver the effective damping and hence the bandwidth of the input circuit is maintained constant when changing from one waveband to another. The input circuit comprises tapped inductor 2, 3 parallel tuned by variable capacitor 4, the aerial 8 being connected to the tapping point on the inductor. A device 9, e.g. a transistor, loading the tuned circuit is connected to the common point of series-connected capacitors 5, 6 one end of which is connected to the free end of the tuned circuit. Switch 7 is arranged so that on one waveband the other end of the series capacitors is earthed, i.e. they are connected across the whole of the inductance 2, 3 in the second waveband, however, it is connected to the tapping point on the inductors, i.e. the capacitors are connected across inductance 2 alone. In a modification (Fig. 2, not shown), both parts 2, 3 of the inductor are tapped and a twopole, two-throw switch connected so as to provide wave-band switching as well.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DET0025924 | 1964-03-28 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB1027960A true GB1027960A (en) | 1966-05-04 |
Family
ID=7552411
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1315465A Expired GB1027960A (en) | 1964-03-28 | 1965-03-29 | Improvements in or relating to tuning arrangements for radio receivers |
Country Status (2)
| Country | Link |
|---|---|
| AT (1) | AT250458B (en) |
| GB (1) | GB1027960A (en) |
-
1965
- 1965-03-08 AT AT203365A patent/AT250458B/en active
- 1965-03-29 GB GB1315465A patent/GB1027960A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| AT250458B (en) | 1966-11-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB1099035A (en) | Tuner for radio receivers | |
| ES353243A1 (en) | Single control multiband variable capacitance diode tv tuner | |
| GB1273603A (en) | A television tuning device | |
| GB1141087A (en) | Electrical apparatus exhibiting a substantially constant tunable bandwidth | |
| GB1027960A (en) | Improvements in or relating to tuning arrangements for radio receivers | |
| US2075526A (en) | Radio signal receiving system | |
| US2101715A (en) | Selective circuit arrangement | |
| US2571001A (en) | Converter circuits for frequency modulation-amplitude modulation receivers | |
| SE320705B (en) | ||
| US1677268A (en) | High-frequency signaling system | |
| GB971471A (en) | Channel tuning system for signal receivers | |
| US1933778A (en) | Radio receiving system | |
| US1961253A (en) | Multirange oscillator | |
| GB551064A (en) | Improvements in or relating to radio receivers | |
| US1912617A (en) | Wireless circuits | |
| ES388476A1 (en) | A tuning device for a television receiver. (Machine-translation by Google Translate, not legally binding) | |
| US2206390A (en) | Ultra high frequency radio receiver | |
| ES305650A1 (en) | U.h.f. and v.h.f. tuner for receivers | |
| ES253057A1 (en) | Tuning circuit with serially connected printed and wire wound inductances to minimize frequency drift | |
| US1976001A (en) | Wireless receiver | |
| ES358541A1 (en) | Solid state tuner | |
| GB967018A (en) | Tuner unit | |
| US2021756A (en) | Coupling arrangement | |
| GB853888A (en) | Improvements in or relating to wide band oscillator tuning circuit arrangements for television receivers | |
| GB250022A (en) | Improvements in and relating to thermionic generators, amplifiers and the like |