NL62764C - - Google Patents
Info
- Publication number
- NL62764C NL62764C NL89988A NL89988A NL62764C NL 62764 C NL62764 C NL 62764C NL 89988 A NL89988 A NL 89988A NL 89988 A NL89988 A NL 89988A NL 62764 C NL62764 C NL 62764C
- Authority
- NL
- Netherlands
Links
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03D—DEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
- H03D3/00—Demodulation of angle-, frequency- or phase- modulated oscillations
- H03D3/02—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal
- H03D3/06—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators
- H03D3/08—Demodulation of angle-, frequency- or phase- modulated oscillations by detecting phase difference between two signals obtained from input signal by combining signals additively or in product demodulators by means of diodes, e.g. Foster-Seeley discriminator
-
- 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
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Channel Selection Circuits, Automatic Tuning Circuits (AREA)
- Circuits Of Receivers In General (AREA)
- Superheterodyne Receivers (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US166749A US2150044A (en) | 1937-10-01 | 1937-10-01 | Frequency selective network |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| NL62764C true NL62764C (it) | 1949-04-15 |
Family
ID=22604558
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| NL89988A NL62764C (it) | 1937-10-01 | 1938-09-30 |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US2150044A (it) |
| DE (1) | DE874926C (it) |
| FR (1) | FR844148A (it) |
| GB (1) | GB507619A (it) |
| NL (1) | NL62764C (it) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2540643A (en) * | 1940-01-12 | 1951-02-06 | Edwin H Armstrong | Frequency-modulated carrier signal receiver |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE490588C (de) * | 1926-08-05 | 1931-02-11 | Siemens & Halske Akt Ges | Einrichtung, um mechanische oder elektrische Wirkungen auszuloesen, wenn die Frequenz eines Wechselstromes eine Normalfrequenz ueber- oder unterschreitet |
| US2095314A (en) * | 1934-03-23 | 1937-10-12 | Rca Corp | Frequency modulation detection |
| US2087429A (en) * | 1935-06-06 | 1937-07-20 | Rca Corp | Phase and frequency modulation wave receiving system |
-
1937
- 1937-10-01 US US166749A patent/US2150044A/en not_active Expired - Lifetime
-
1938
- 1938-09-05 GB GB25921/38A patent/GB507619A/en not_active Expired
- 1938-09-27 DE DEH5405D patent/DE874926C/de not_active Expired
- 1938-09-30 NL NL89988A patent/NL62764C/xx active
- 1938-10-01 FR FR844148D patent/FR844148A/fr not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2150044A (en) | 1939-03-07 |
| FR844148A (fr) | 1939-07-19 |
| GB507619A (en) | 1939-06-19 |
| DE874926C (de) | 1953-04-27 |