GB536035A - Improvements in volume control circuit arrangements - Google Patents
Improvements in volume control circuit arrangementsInfo
- Publication number
- GB536035A GB536035A GB3052539A GB3052539A GB536035A GB 536035 A GB536035 A GB 536035A GB 3052539 A GB3052539 A GB 3052539A GB 3052539 A GB3052539 A GB 3052539A GB 536035 A GB536035 A GB 536035A
- Authority
- GB
- United Kingdom
- Prior art keywords
- gain
- volume control
- stages
- potentiometer
- grid
- 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
- 230000007423 decrease Effects 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G3/00—Gain control in amplifiers or frequency changers
- H03G3/20—Automatic control
- H03G3/22—Automatic control in amplifiers having discharge tubes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03G—CONTROL OF AMPLIFICATION
- H03G1/00—Details of arrangements for controlling amplification
- H03G1/04—Modifications of control circuit to reduce distortion caused by control
Landscapes
- Circuits Of Receivers In General (AREA)
- Control Of Amplification And Gain Control (AREA)
Abstract
536,035. Valve circuits for wireless reception. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., and ZEPLER, E. E. Nov. 21, 1939, No. 30525. [Class 40 (v)] In a radio receiver comprising at least two valve amplifier stages, common control means are provided for subjecting said stages to volume control together with means whereby on operation of said volume control means in a sense to reduce gain, the gain of one stage is maintained substantially constant until the gain of the other stage is reduced to a predetermined extent. In Fig. 1 V1 and V2 are H.F. and I.F. amplifiers respectively. Negative bias from a potentiometer R2 is applied directly to the grid of V2, and through a dry-plate rectifier I to the grid of V1. As the slider of potentiometer R2 moves to the left, the gain of V2 is reduced linearly; while in the early stages the gain of V1 is substantially unaffected until the resistance I decreases to reduce the gain of V2 at an increasing rate. The manually controlled slider may be replaced by an automatically variable potential applied across R2.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3052539A GB536035A (en) | 1939-11-21 | 1939-11-21 | Improvements in volume control circuit arrangements |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB3052539A GB536035A (en) | 1939-11-21 | 1939-11-21 | Improvements in volume control circuit arrangements |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB536035A true GB536035A (en) | 1941-04-30 |
Family
ID=10309025
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3052539A Expired GB536035A (en) | 1939-11-21 | 1939-11-21 | Improvements in volume control circuit arrangements |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB536035A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2837635A (en) * | 1953-11-25 | 1958-06-03 | Aeronautical Comm Equipment In | Volume control for radio receiver |
-
1939
- 1939-11-21 GB GB3052539A patent/GB536035A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2837635A (en) * | 1953-11-25 | 1958-06-03 | Aeronautical Comm Equipment In | Volume control for radio receiver |
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