GB491603A - Improvements in oscillatory circuits comprising negative resistance - Google Patents
Improvements in oscillatory circuits comprising negative resistanceInfo
- Publication number
- GB491603A GB491603A GB731537A GB731537A GB491603A GB 491603 A GB491603 A GB 491603A GB 731537 A GB731537 A GB 731537A GB 731537 A GB731537 A GB 731537A GB 491603 A GB491603 A GB 491603A
- Authority
- GB
- United Kingdom
- Prior art keywords
- negative
- hot conductor
- current
- hot
- positive
- 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
- 230000003534 oscillatory effect Effects 0.000 title 1
- 239000004020 conductor Substances 0.000 abstract 5
- 230000010355 oscillation Effects 0.000 abstract 2
- OOAWCECZEHPMBX-UHFFFAOYSA-N oxygen(2-);uranium(4+) Chemical compound [O-2].[O-2].[U+4] OOAWCECZEHPMBX-UHFFFAOYSA-N 0.000 abstract 1
- FCTBKIHDJGHPPO-UHFFFAOYSA-N uranium dioxide Inorganic materials O=[U]=O FCTBKIHDJGHPPO-UHFFFAOYSA-N 0.000 abstract 1
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03B—GENERATION OF OSCILLATIONS, DIRECTLY OR BY FREQUENCY-CHANGING, BY CIRCUITS EMPLOYING ACTIVE ELEMENTS WHICH OPERATE IN A NON-SWITCHING MANNER; GENERATION OF NOISE BY SUCH CIRCUITS
- H03B7/00—Generation of oscillations using active element having a negative resistance between two of its electrodes
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03L—AUTOMATIC CONTROL, STARTING, SYNCHRONISATION OR STABILISATION OF GENERATORS OF ELECTRONIC OSCILLATIONS OR PULSES
- H03L5/00—Automatic control of voltage, current, or power
Landscapes
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
- Oscillators With Electromechanical Resonators (AREA)
Abstract
491,603. Generating high - frequency oscillations. GENERAL ELECTRIC CO., Ltd. (Siemens & Halske Akt.-Ges.) March 12, 1937, No. 7315. Drawings to Specification. [Class 40 (v)] A hot conductor having a high temperature coefficient is operated, for the purpose of producing electric oscillations, at a mean current such that its A.C. resistance tends to a negative real value at zero frequency. The hot conductor is connected in parallel with an inductance or with a condenser according as its temperature coefficient is positive or negative, Figs. 6, 7 (not shown), or two hot conductors having coefficients of opposite sign may be connected in parallel, Fig. 5 (not shown). The oscillator is tuned by adjusting the mean or D.C. component of the current by means of a potentiometer, Fig. 8 (not shown). Additional passive impedance elements or a current-limiting device, Figs. 9, 10 (not shown), may be added to the circuit. Uranium dioxide may be used as a negative hot conductor, and an ironhydrogen resistance as a positive hot conductor.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB731537A GB491603A (en) | 1937-03-12 | 1937-03-12 | Improvements in oscillatory circuits comprising negative resistance |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB731537A GB491603A (en) | 1937-03-12 | 1937-03-12 | Improvements in oscillatory circuits comprising negative resistance |
Publications (1)
Publication Number | Publication Date |
---|---|
GB491603A true GB491603A (en) | 1938-09-06 |
Family
ID=9830774
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB731537A Expired GB491603A (en) | 1937-03-12 | 1937-03-12 | Improvements in oscillatory circuits comprising negative resistance |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB491603A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2469569A (en) * | 1945-03-02 | 1949-05-10 | Bell Telephone Labor Inc | Point contact negative resistance devices |
US3062970A (en) * | 1959-09-24 | 1962-11-06 | Rca Corp | Converter circuits employing negative resistance elements |
DE1188676B (en) * | 1959-08-05 | 1965-03-11 | Ibm | Arrangement for generating electrical oscillations of very high frequency with at least one Esaki diode |
-
1937
- 1937-03-12 GB GB731537A patent/GB491603A/en not_active Expired
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2469569A (en) * | 1945-03-02 | 1949-05-10 | Bell Telephone Labor Inc | Point contact negative resistance devices |
DE1188676B (en) * | 1959-08-05 | 1965-03-11 | Ibm | Arrangement for generating electrical oscillations of very high frequency with at least one Esaki diode |
US3062970A (en) * | 1959-09-24 | 1962-11-06 | Rca Corp | Converter circuits employing negative resistance elements |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
GB515739A (en) | Improvements in electrical frequency selective apparatus | |
GB497656A (en) | Improvements in or relating to electric oscillation generators | |
GB591356A (en) | Improvements in lead in arrangements for high frequency devices | |
GB491603A (en) | Improvements in oscillatory circuits comprising negative resistance | |
GB615841A (en) | Improvements in and relating to piezo-electric resonators | |
GB568831A (en) | A device for coupling two high-frequency electrical circuits | |
GB984573A (en) | Improvements in and relating to electrical impedance networks simulating inductance | |
GB625197A (en) | Improvements in or relating to networks for the transmission of electrical oscillations | |
GB202115A (en) | Improvements in or relating to electrical apparatus for use in high frequency circuits | |
JPS51136133A (en) | High frequency inverter | |
GB296829A (en) | Improvements in or relating to electric frequency-transforming devices | |
GB559718A (en) | Improvements in or relating to variable inductance devices for tuning high frequency electric circuits | |
GB509472A (en) | An improved arrangement for determining the high frequency energy absorbed in a treatment subject while undergoing treatment with short or ultra-short wave electrical oscillations | |
GB419136A (en) | Improvements in apparatus for medical treatment with electrical oscillations of very high frequency | |
US1707945A (en) | Electromagnetic-wave receiving system | |
Clavin | On a Variable Impedance Termination for Testing High Power Components(Correspondence) | |
GB1090123A (en) | A power circuit breaker testing apparatus | |
GB1022723A (en) | Electrical storage networks | |
GB491903A (en) | Improvements in or relating to circuit arrangements for suppressing undesired frequencies in wireless receiving apparatus | |
GB1110322A (en) | Improvements relating to current limiting coupling circuits | |
GB709216A (en) | Improvements in electrical protective systems | |
GB1019906A (en) | An arrangement for testing high-voltage power circuit breakers | |
GB594701A (en) | Tuned electrical circuits | |
GB228337A (en) | Improvements relating to frequency meters for electric currents | |
GB988799A (en) | Improvements in or relating to radio frequency heating equipment |