GB847406A - Improvements in or relating to tuning devices - Google Patents
Improvements in or relating to tuning devicesInfo
- Publication number
- GB847406A GB847406A GB3162157A GB3162157A GB847406A GB 847406 A GB847406 A GB 847406A GB 3162157 A GB3162157 A GB 3162157A GB 3162157 A GB3162157 A GB 3162157A GB 847406 A GB847406 A GB 847406A
- Authority
- GB
- United Kingdom
- Prior art keywords
- capacitor
- contacts
- rotor
- oct
- engage
- 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
Landscapes
- Rotary Switch, Piano Key Switch, And Lever Switch (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
847,406. Wireless receiving apparatus. PLESSEY CO. Ltd. Oct. 9, 1958 [Oct. 9, 1957], No. 31621/57. Class 40(5). A variable capacitor of the rotary vane type is combined with a switch operable at a predetermined setting of the capacitor, the switch comprising a contact mounted on the stationary part of the capacitor, and a complementary contact formed by, or operated by, the rotor vanes, or by an element carried on the vanes. In the embodiment shown in Fig. 3, contacts 2a and 2b are mounted on an insulated block 9 attached to the body of a two gang variable capacitor. When the capacitor is in its minimum capacitance position, the edges 1c and 1d of the rotor engage with the contacts 2a and 2b which are connected in the circuit wiring in such a manner that the capacitor is either shorted or by-passed by a fixed capacitor (Figs. 1 and 2 not shown). In an alternative embodiment (Fig. 4, not shown) the capacitor rotor causes an auxiliary contact to deflect and engage with the contacts 2a and 2b.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3162157A GB847406A (en) | 1957-10-09 | 1957-10-09 | Improvements in or relating to tuning devices |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3162157A GB847406A (en) | 1957-10-09 | 1957-10-09 | Improvements in or relating to tuning devices |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB847406A true GB847406A (en) | 1960-09-07 |
Family
ID=10325892
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3162157A Expired GB847406A (en) | 1957-10-09 | 1957-10-09 | Improvements in or relating to tuning devices |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB847406A (en) |
-
1957
- 1957-10-09 GB GB3162157A patent/GB847406A/en not_active Expired
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