GB563788A - Improvements relating to tuning arrangements for oscillatory circuits - Google Patents
Improvements relating to tuning arrangements for oscillatory circuitsInfo
- Publication number
- GB563788A GB563788A GB366044A GB366044A GB563788A GB 563788 A GB563788 A GB 563788A GB 366044 A GB366044 A GB 366044A GB 366044 A GB366044 A GB 366044A GB 563788 A GB563788 A GB 563788A
- Authority
- GB
- United Kingdom
- Prior art keywords
- condenser
- ganged
- variable
- shorted
- series
- 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
- H03J3/00—Continuous tuning
- H03J3/02—Details
- H03J3/10—Circuit arrangements for fine tuning, e.g. bandspreading
Landscapes
- Transmitters (AREA)
Abstract
563,788. Wireless signalling apparatus. COSSOR, Ltd., A. C., WYNN, A. H. A., and BEDFORD, L. H. Feb. 26, 1943, No. 3660/44. Divided out of 563,786. Drawings to Specification. [Class 40 (v)] A resonant circuit particularly for operation at high frequency comprises an inductance in parallel with both a variable condenser, and a further condenser in series with a second variable condenser ganged to the first, the laws of the ganged variable condensers being such that if one of the series connected condensers is shorted or changed in value the frequency change produced is substantially independent of the setting of the ganged condenser. For this purpose, a ganged condenser arranged in series is designed in accordance with a special law dependent on whether it or the further condenser is shorted or changed in value. The further condenser may be variable over a range to provide a fine tuning control independent of the setting of the ganged variable condensers or it may be shorted by a switch so that a single oscillator serves alternately as a transmitter and as the local oscillator in a superheterodyne receiver to receive the same signal frequency as the transmitter previously was transmitting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB366044A GB563788A (en) | 1943-02-26 | 1943-02-26 | Improvements relating to tuning arrangements for oscillatory circuits |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB366044A GB563788A (en) | 1943-02-26 | 1943-02-26 | Improvements relating to tuning arrangements for oscillatory circuits |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB563788A true GB563788A (en) | 1944-08-30 |
Family
ID=9762514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB366044A Expired GB563788A (en) | 1943-02-26 | 1943-02-26 | Improvements relating to tuning arrangements for oscillatory circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB563788A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4186360A (en) * | 1977-02-18 | 1980-01-29 | Sanyo Electric Co., Ltd. | Digital channel selecting apparatus |
| DE10324392A1 (en) * | 2003-05-28 | 2004-12-23 | Siemens Ag | Frequency setting device |
-
1943
- 1943-02-26 GB GB366044A patent/GB563788A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4186360A (en) * | 1977-02-18 | 1980-01-29 | Sanyo Electric Co., Ltd. | Digital channel selecting apparatus |
| DE10324392A1 (en) * | 2003-05-28 | 2004-12-23 | Siemens Ag | Frequency setting device |
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