GB818173A - Improvements in or relating to means for tuning oscillatory circuits - Google Patents
Improvements in or relating to means for tuning oscillatory circuitsInfo
- Publication number
- GB818173A GB818173A GB4079/56A GB407956A GB818173A GB 818173 A GB818173 A GB 818173A GB 4079/56 A GB4079/56 A GB 4079/56A GB 407956 A GB407956 A GB 407956A GB 818173 A GB818173 A GB 818173A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tuning
- retaining
- coarse
- pawl
- feb
- 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
- H03J1/00—Details of adjusting, driving, indicating, or mechanical control arrangements for resonant circuits in general
- H03J1/06—Driving or adjusting arrangements; combined with other driving or adjusting arrangements, e.g. of gain control
- H03J1/14—Special arrangements for fine and coarse tuning
Landscapes
- Circuits Of Receivers In General (AREA)
Abstract
818,173. Tuning radio receivers. TELEFUNKEN G.m.b.H. Feb. 9, 1956 [Feb. 11, 1955], No. 4079/56. Class 40 (5). A tuning arrangement, more particularly for a television receiver, comprises a rotatable coarse tuning member and a retaining member for retaining the coarse tuning member in a plurality of discreet positions, the retaining means being rotatable under the control of an eccentric about the axis of the coarse tuning member so as to move the retaining member and effect fine tuning. In the Figure, the tuning cores 2 are adjustable by rotating a shaft 4 which carries an indented disc 5 engaged by a pawl 8 so that the tuning is arrested at a number of discreet positions corresponding, for example, to various television channels. The pawl is carried on a frame 13 which, by adjusting an eccentric 18, can be caused to rotate about the shaft 4 and so provide fine tuning at each tuning position. Backlash can be prevented by making the arms of the cam follower 15 resilient. The invention can also be used for adjusting a condenser.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE818173X | 1955-02-11 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB818173A true GB818173A (en) | 1959-08-12 |
Family
ID=6735378
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB4079/56A Expired GB818173A (en) | 1955-02-11 | 1956-02-09 | Improvements in or relating to means for tuning oscillatory circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB818173A (en) |
-
1956
- 1956-02-09 GB GB4079/56A patent/GB818173A/en not_active Expired
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