GB472956A - Improvements in or relating to circuit-arrangements for rectifying modulated high-or intermediate-frequency oscillations and for amplifying the oscillations obtained after rectification - Google Patents
Improvements in or relating to circuit-arrangements for rectifying modulated high-or intermediate-frequency oscillations and for amplifying the oscillations obtained after rectificationInfo
- Publication number
- GB472956A GB472956A GB16132/37A GB1613237A GB472956A GB 472956 A GB472956 A GB 472956A GB 16132/37 A GB16132/37 A GB 16132/37A GB 1613237 A GB1613237 A GB 1613237A GB 472956 A GB472956 A GB 472956A
- Authority
- GB
- United Kingdom
- Prior art keywords
- amplifier
- oscillations
- rectifying
- detectors
- june
- 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
- H03D1/00—Demodulation of amplitude-modulated oscillations
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03F—AMPLIFIERS
- H03F3/00—Amplifiers with only discharge tubes or only semiconductor devices as amplifying elements
- H03F3/34—Dc amplifiers in which all stages are dc-coupled
- H03F3/36—Dc amplifiers in which all stages are dc-coupled with tubes only
Abstract
472,956. Valve circuits for wireless reception; television. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN. June 10, 1937, No. 16132. Convention date, June 13, 1936. [Classes 40 (iii) and 40 (v)] A rectifying circuit, for oscillations modulated by a broad band of frequencies as in television, comprises an anode detector V2 coupled to an amplifier V3 by a coupling which does not pass the low frequencies and a diode D which passes low frequencies in such a manner that increasing amplitude of carrier frequency applies increasing negative bias to the grid of the amplifier V3. The Figure shows an arrangement in which the high-frequency coupling to the amplifier V3 comprises resistances 22, 24 and condenser 26 and the detectors D, V2 are fed in parallel. In a modification, Fig. 2 (not shown), separate parallel fed carrier frequency amplifiers are used to feed the two detectors. The final amplifier V3 preferably has a rectilinear characteristic. Synchronizing impulses may be taken from the diode load resistance 6.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE472956X | 1936-06-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB472956A true GB472956A (en) | 1937-10-04 |
Family
ID=6541497
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB16132/37A Expired GB472956A (en) | 1936-06-13 | 1937-06-10 | Improvements in or relating to circuit-arrangements for rectifying modulated high-or intermediate-frequency oscillations and for amplifying the oscillations obtained after rectification |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2229674A (en) |
| DK (1) | DK56281C (en) |
| FR (1) | FR822956A (en) |
| GB (1) | GB472956A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2848540A (en) * | 1953-02-16 | 1958-08-19 | John R Cooney | Carrier-wave transmitting and receiving apparatus |
| NL185738B (en) * | 1953-03-10 | Victor Company Of Japan | SYSTEM FOR THE HIGH-DENSITY RECORDING OF INFORMATION SIGNALS AND SCHEME FOR REPRODUCING THE INFORMATION SIGNALS SO REGISTERED. |
-
1937
- 1937-06-08 US US147000A patent/US2229674A/en not_active Expired - Lifetime
- 1937-06-09 DK DK56281D patent/DK56281C/en active
- 1937-06-10 GB GB16132/37A patent/GB472956A/en not_active Expired
- 1937-06-11 FR FR822956D patent/FR822956A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| DK56281C (en) | 1939-06-12 |
| FR822956A (en) | 1938-01-11 |
| US2229674A (en) | 1941-01-28 |
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