GB812588A - Improvements in or relating to transmission measuring sets for electric communication circuits - Google Patents
Improvements in or relating to transmission measuring sets for electric communication circuitsInfo
- Publication number
- GB812588A GB812588A GB38288/56A GB3828856A GB812588A GB 812588 A GB812588 A GB 812588A GB 38288/56 A GB38288/56 A GB 38288/56A GB 3828856 A GB3828856 A GB 3828856A GB 812588 A GB812588 A GB 812588A
- Authority
- GB
- United Kingdom
- Prior art keywords
- relating
- communication circuits
- electric communication
- transmission measuring
- measuring sets
- 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
- 230000005540 biological transmission Effects 0.000 title abstract 3
Classifications
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B3/00—Line transmission systems
- H04B3/02—Details
- H04B3/46—Monitoring; Testing
- H04B3/48—Testing attenuation
Landscapes
- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Arrangements For Transmission Of Measured Signals (AREA)
Abstract
812,588. Voltage, transmission level, measuring. STANDARD TELEPHONES & CABLES Ltd. Dec. 14, 1956, No. 38288/56. Class 37. In the receiver of a transmission measuring set, the A.C. signal is applied to the input 1, 2 of a two-stage transistor amplifier having a negative feedback path which includes a rectifier bridge 19 with a D.C. meter 20 across it. The negative feedback increases the output impedance so that the output is substantially independent of the input frequency over the range. Reference has been directed by the Comptroller to Specification 787,691.
Publications (1)
Publication Number | Publication Date |
---|---|
GB812588A true GB812588A (en) | 1959-04-29 |
Family
ID=1745222
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB38288/56A Expired GB812588A (en) | 1956-12-14 | Improvements in or relating to transmission measuring sets for electric communication circuits |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB812588A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2259782A (en) * | 1991-09-19 | 1993-03-24 | Nokia Mobile Phones Ltd | Detecting RF signals |
-
1956
- 1956-12-14 GB GB38288/56A patent/GB812588A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2259782A (en) * | 1991-09-19 | 1993-03-24 | Nokia Mobile Phones Ltd | Detecting RF signals |
US5404585A (en) * | 1991-09-19 | 1995-04-04 | Nokia Mobile Phones Ltd. | Power detector that employs a feedback circuit to enable class B operation of a detector transistor |
GB2259782B (en) * | 1991-09-19 | 1996-04-10 | Nokia Mobile Phones Ltd | Power detector |
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