GB396145A - Improvements in or relating to wireless receiving apparatus of the superheterodyne type - Google Patents
Improvements in or relating to wireless receiving apparatus of the superheterodyne typeInfo
- Publication number
- GB396145A GB396145A GB635232A GB635232A GB396145A GB 396145 A GB396145 A GB 396145A GB 635232 A GB635232 A GB 635232A GB 635232 A GB635232 A GB 635232A GB 396145 A GB396145 A GB 396145A
- Authority
- GB
- United Kingdom
- Prior art keywords
- tuned
- valve
- anode
- grid
- circuit
- 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
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D7/00—Transference of modulation from one carrier to another, e.g. frequency-changing
- H03D7/06—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes
- H03D7/10—Transference of modulation from one carrier to another, e.g. frequency-changing by means of discharge tubes having more than two electrodes the signals to be mixed being applied between different pairs of electrodes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Superheterodyne Receivers (AREA)
- Input Circuits Of Receivers And Coupling Of Receivers And Audio Equipment (AREA)
Abstract
396,145. Valve circuits for wireless reception. SOWERBY, A. L. M., 85, Westbourne Grove, Paddington, and COSSOR, Ltd., A. C., 22, Highbury Grove, both in London. March 2, 1932, No. 6352. [Class 40 (v).] In a super-heterodyne receiver, the local oscillation generator has one of its electrodes conductively connected to an electrode interposed between the anode and signal input electrode of the valve for receiving the incoming signals. The incoming signals are received by a tuned circuit L1, C1, and applied to the control grid of a four-electrode valve V1, whose second or screen grid is connected to the anode of the triode oscillator V2. The intermediate frequency is taken from a transformer whose primary winding L2 is tuned by a condenser C2. The screen grid of the valve V1 is preferably connected to the tapping on the inductance L4 coupled to inductance L3 to adjust the amplitude of the local oscillation. Alternatively an impedance may be included in the conductive connection, Fig. 2 (not shown). The oscillator V2 may have a tuned grid circuit instead of the tuned anode circuit L4, C4, Fig. 3 (not shown).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB635232A GB396145A (en) | 1932-03-02 | 1932-03-02 | Improvements in or relating to wireless receiving apparatus of the superheterodyne type |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB635232A GB396145A (en) | 1932-03-02 | 1932-03-02 | Improvements in or relating to wireless receiving apparatus of the superheterodyne type |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB396145A true GB396145A (en) | 1933-08-03 |
Family
ID=9812919
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB635232A Expired GB396145A (en) | 1932-03-02 | 1932-03-02 | Improvements in or relating to wireless receiving apparatus of the superheterodyne type |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB396145A (en) |
-
1932
- 1932-03-02 GB GB635232A patent/GB396145A/en not_active Expired
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