GB361450A - Improvements in or relating to circuit-arrangements for the detection of high-frequency oscillations with subsequent amplification - Google Patents
Improvements in or relating to circuit-arrangements for the detection of high-frequency oscillations with subsequent amplificationInfo
- Publication number
- GB361450A GB361450A GB25979/30A GB2597930A GB361450A GB 361450 A GB361450 A GB 361450A GB 25979/30 A GB25979/30 A GB 25979/30A GB 2597930 A GB2597930 A GB 2597930A GB 361450 A GB361450 A GB 361450A
- Authority
- GB
- United Kingdom
- Prior art keywords
- cathode
- condenser
- circuit
- triode
- resistance
- 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
- H03D1/08—Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements
- H03D1/10—Demodulation of amplitude-modulated oscillations by means of non-linear two-pole elements of diodes
Landscapes
- Physics & Mathematics (AREA)
- Nonlinear Science (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Amplifiers (AREA)
Abstract
361,450. Valve detecting and amplifying circuits. NAAMLOOZE VENNOOTSCHAP PHILIPS' GLOEILAMPENFABRIEKEN, 13D, Emmasingel, Eindhoven, Holland. Aug. 30, 1930, No. 25979. Convention date, Oct. 4, 1929. [Classes 39 (i) and 40 (v).] The input circuit of a thermionic rectifier comprises an impedance and a condenser, the latter being connected to the rectifier cathode and also between grid and cathode of the subsequent amplifier; the condenser is shunted by a resistance and its capacity is such that no high-frequency potential exists between the rectifier cathode and either of the condenser electrodes. Fig. 2 shows a detector-amplifier DA comprising a triode with an auxiliary anode 3, the input from the circuit 1 being applied across the anode 3 and cathode 6 through a condenser 4, having negligible impedance for high frequencies, and shunted by a leak resistance 5. Rectification only takes place in the circuit 1, 3, 6, 4, the triode 6, 7, 8 acting as a lowfrequency amplifier suitably biased by resistance 10 and battery 11. A pentode, with a small auxiliary anode, may be used instead of a triode, Fig. 3 (not shown). A construction of the valve electrode system is shown in Fig. 4. The cathode 6 projects from the normal electrode system 7, 8, the projecting portion being associated with the auxiliary anode 3 whose leading-in wire also serves as a support.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| NL361450X | 1929-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB361450A true GB361450A (en) | 1931-11-26 |
Family
ID=19785408
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB25979/30A Expired GB361450A (en) | 1929-10-04 | 1930-08-30 | Improvements in or relating to circuit-arrangements for the detection of high-frequency oscillations with subsequent amplification |
Country Status (4)
| Country | Link |
|---|---|
| US (1) | US2050819A (en) |
| BE (1) | BE373074A (en) |
| FR (1) | FR701700A (en) |
| GB (1) | GB361450A (en) |
-
0
- BE BE373074D patent/BE373074A/xx unknown
-
1930
- 1930-08-30 GB GB25979/30A patent/GB361450A/en not_active Expired
- 1930-09-04 FR FR701700D patent/FR701700A/en not_active Expired
- 1930-09-24 US US484006A patent/US2050819A/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| FR701700A (en) | 1931-03-20 |
| BE373074A (en) | |
| US2050819A (en) | 1936-08-11 |
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