GB538630A - Arrangement for automatic or manual selectivity or tuning control of electric oscillatory circuits - Google Patents
Arrangement for automatic or manual selectivity or tuning control of electric oscillatory circuitsInfo
- Publication number
- GB538630A GB538630A GB3428/40A GB342840A GB538630A GB 538630 A GB538630 A GB 538630A GB 3428/40 A GB3428/40 A GB 3428/40A GB 342840 A GB342840 A GB 342840A GB 538630 A GB538630 A GB 538630A
- Authority
- GB
- United Kingdom
- Prior art keywords
- control
- valve
- effected
- arrangement
- automatic
- 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
- H03J7/00—Automatic frequency control; Automatic scanning over a band of frequencies
- H03J7/02—Automatic frequency control
- H03J7/04—Automatic frequency control where the frequency control is accomplished by varying the electrical characteristics of a non-mechanically adjustable element or where the nature of the frequency controlling element is not significant
- H03J7/14—Controlling the magnetic state of inductor cores
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G5/00—Tone control or bandwidth control in amplifiers
- H03G5/16—Automatic control
- H03G5/18—Automatic control in untuned amplifiers
- H03G5/20—Automatic control in untuned amplifiers having discharge tubes
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Particle Accelerators (AREA)
Abstract
538,630. Wireless receiving apparatus. KRAMOLIN, L. L. DE. Feb. 23, 1940, No. 3428. Convention date, Feb. 25, 1939. Addition to 510,862. [Class 40 (v)] [Also in Group XXXV] Tuning or selectivity control is effected by an inductance which is varied by an applied current or voltage which is amplified by a valve used in the apparatus for a different purpose, the regulating means being connected in the cathode lead. The Figure shows an arrangement in which automatic tuning correction is effected by a magnet in the cathode lead of the output valve VI. The control is by an error detector valve 1 which controls the bias applied to the valve V1. The signals are applied through condenser C3 and volume control is effected by the contact S. Selectivity control may control the received band width in any known manner and may be in accordance with the noise level e.g. by filtering the 9-10 Kc./sec. resonance from the detector circuit. Specifications 449,240, 451,097,. [Group XXXVI], 455,190, 470,945, 472,710, 473,384, 481,062, 485,285, 490,508, 510,862, 510,941; 511,031, [Group XXXV], and 513,626 are referred to.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE538630X | 1939-02-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB538630A true GB538630A (en) | 1941-08-11 |
Family
ID=6558230
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3428/40A Expired GB538630A (en) | 1939-02-25 | 1940-02-23 | Arrangement for automatic or manual selectivity or tuning control of electric oscillatory circuits |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB538630A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1103383B (en) * | 1958-07-24 | 1961-03-30 | Grundig Max | Tuning device for televisions |
-
1940
- 1940-02-23 GB GB3428/40A patent/GB538630A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE1103383B (en) * | 1958-07-24 | 1961-03-30 | Grundig Max | Tuning device for televisions |
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