NL79628B - - Google Patents
Info
- Publication number
- NL79628B NL79628B NL79628DA NL79628B NL 79628 B NL79628 B NL 79628B NL 79628D A NL79628D A NL 79628DA NL 79628 B NL79628 B NL 79628B
- Authority
- NL
- Netherlands
Links
Classifications
-
- 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
- H03J7/042—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 with reactance tube
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R25/00—Arrangements for measuring phase angle between a voltage and a current or between voltages or currents
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Amplifiers (AREA)
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
- Measuring Phase Differences (AREA)
- Circuits Of Receivers In General (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US45413A US2121103A (en) | 1935-10-17 | 1935-10-17 | Frequency variation response circuits |
Publications (1)
Publication Number | Publication Date |
---|---|
NL79628B true NL79628B (zh) |
Family
ID=21937734
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL79628D NL79628B (zh) | 1935-10-17 | ||
NL52037D NL52037C (zh) | 1935-10-17 | 1936-10-16 |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
NL52037D NL52037C (zh) | 1935-10-17 | 1936-10-16 |
Country Status (4)
Country | Link |
---|---|
US (2) | US2121103A (zh) |
DE (2) | DE685380C (zh) |
GB (1) | GB489094A (zh) |
NL (2) | NL52037C (zh) |
Families Citing this family (39)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2433361A (en) * | 1940-01-20 | 1947-12-30 | Submarine Signal Co | Method and apparatus for echo ranging |
DE938386C (de) * | 1941-04-01 | 1956-01-26 | Heinz Fleck Dr | Gleichrichter mit Gegenkopplung auf einen vorgeschalteten Verstaerker |
BE446845A (zh) * | 1941-08-16 | |||
DE943955C (de) * | 1942-01-18 | 1956-06-07 | Telefunken Gmbh | Auf Frequenzaenderungen ansprechende Schaltungsanordnung |
US2434914A (en) * | 1942-04-21 | 1948-01-27 | Standard Telephones Cables Ltd | Frequency indicating cathode-ray oscilloscope |
US2447098A (en) * | 1943-06-28 | 1948-08-17 | Stanolind Oil & Gas Co | Signaling system |
US2523341A (en) * | 1943-11-02 | 1950-09-26 | Int Standard Electric Corp | Vibrating device |
US2457136A (en) * | 1943-12-08 | 1948-12-28 | Int Standard Electric Corp | Arrangement for frequency measurements |
US2425999A (en) * | 1943-12-20 | 1947-08-19 | Gen Electric | Signal portraying apparatus |
DE898036C (de) * | 1944-01-04 | 1953-11-26 | Svenska Aktiebolag Gasaccumula | Vorrichtung zum Messen von Phasenwinkeln, beispielsweise fuer die Bestimmung einer Funkpeilrichtung |
GB577758A (en) * | 1944-03-25 | 1946-05-30 | Eric Lawrence Casling White | Improvements in or relating to apparatus for transmitting or receiving frequency-modulated oscillations |
US2527523A (en) * | 1944-08-11 | 1950-10-31 | Farnsworth Res Corp | Frequency control system |
US2444651A (en) * | 1944-11-30 | 1948-07-06 | Rca Corp | Shaping circuit for cathode beam tubes |
US2541067A (en) * | 1944-11-30 | 1951-02-13 | Sperry Corp | Frequency responsive device |
US2477570A (en) * | 1945-01-05 | 1949-08-02 | Russell A Berg | Radio relay system |
US2495023A (en) * | 1945-05-03 | 1950-01-17 | Paul B Sebring | Discriminator circuit |
NL70931C (zh) * | 1945-06-14 | |||
DE977658C (de) * | 1945-09-07 | 1968-01-25 | Rca Corp | Detektor fuer phasenwinkelmodulierte Traegerfrequenzspannungen |
US2648979A (en) * | 1946-08-09 | 1953-08-18 | Seismograph Service Corp | Transducer testing apparatus |
US2655036A (en) * | 1947-10-01 | 1953-10-13 | Gen Motors Corp | Frequency modulated torsional vibration analyzer |
US2620439A (en) * | 1947-11-05 | 1952-12-02 | Gen Electric | Noise balancing circuits |
US2543256A (en) * | 1948-05-20 | 1951-02-27 | Rca Corp | Diversity receiver for multiplex frequency shift tones |
NL144559B (nl) * | 1949-01-27 | Pechiney Saint Gobain | Werkwijze ter bereiding van agglomeraten van actief aluminiumoxyde, alsmede gevormde agglomeraten van actief aluminiumoxyde verkregen volgens deze werkwijze. | |
NL82934C (zh) * | 1949-05-13 | |||
US2613271A (en) * | 1950-04-07 | 1952-10-07 | Rca Corp | Tuning indicator for frequency shift telegraphy |
US2688726A (en) * | 1951-01-11 | 1954-09-07 | Northrop Aircraft Inc | Phase-amplitude-frequency measuring system |
US2692947A (en) * | 1951-05-11 | 1954-10-26 | Sperry Corp | Locator of inflection points of a response curve |
DE921389C (de) * | 1951-12-06 | 1954-12-16 | Sueddeutsche Telefon App | Umschaltbarer UEberlagerungsempfaenger fuer AM/FM-UEbertragungen |
DE949242C (de) * | 1952-03-16 | 1956-09-13 | Blaupunkt Werke G M B H Zweign | UEberlagerungsempfaenger fuer frequenzmodulierte Schwingungen mit automatischer Scharfeinstellung |
US2835803A (en) * | 1953-10-12 | 1958-05-20 | Esther Marion Armstrong | Linear detector for subcarrier frequency modulated waves |
BE532476A (zh) * | 1953-10-12 | |||
BE532653A (zh) * | 1953-10-21 | |||
US2880315A (en) * | 1954-10-05 | 1959-03-31 | Gen Electric | Angular modulation detector |
DE976553C (de) * | 1954-10-28 | 1963-11-14 | Telefunken Patent | Empfaenger fuer Telegrafie-Nachrichten mit Frequenzumtastung |
US3015776A (en) * | 1957-02-09 | 1962-01-02 | Sud Atlas Werke G M B H | Indicating fluctuations in frequency and amplitude |
US9063067B1 (en) | 2010-11-17 | 2015-06-23 | Alvin P. Schmitt | Moisture sensing devices |
US8879919B2 (en) | 2011-09-09 | 2014-11-04 | Harris Corporation | Photonic communications device with an FM/PM discriminator and related methods |
US8526817B2 (en) | 2012-01-24 | 2013-09-03 | Harris Corporation | Communications device with discriminator for generating intermediate frequency signal and related methods |
US8620158B2 (en) | 2012-01-24 | 2013-12-31 | Harris Corporation | Communications device with discriminator and wavelength division multiplexing for generating intermediate frequency signal and related methods |
-
0
- NL NL79628D patent/NL79628B/xx unknown
-
1935
- 1935-10-17 US US45413A patent/US2121103A/en not_active Expired - Lifetime
-
1936
- 1936-10-16 DE DER97596D patent/DE685380C/de not_active Expired
- 1936-10-16 NL NL52037D patent/NL52037C/xx active
- 1936-10-19 GB GB28373/36A patent/GB489094A/en not_active Expired
-
1937
- 1937-04-03 DE DER99029A patent/DE706234C/de not_active Expired
-
1938
- 1938-01-14 US US184926A patent/US2233751A/en not_active Expired - Lifetime
Also Published As
Publication number | Publication date |
---|---|
US2121103A (en) | 1938-06-21 |
GB489094A (en) | 1938-07-19 |
DE685380C (de) | 1939-12-16 |
NL52037C (zh) | 1942-03-16 |
DE706234C (de) | 1941-05-21 |
US2233751A (en) | 1941-03-04 |