GB499088A - Improvements in or relating to electrical oscillators - Google Patents
Improvements in or relating to electrical oscillatorsInfo
- Publication number
- GB499088A GB499088A GB12387/38A GB1238738A GB499088A GB 499088 A GB499088 A GB 499088A GB 12387/38 A GB12387/38 A GB 12387/38A GB 1238738 A GB1238738 A GB 1238738A GB 499088 A GB499088 A GB 499088A
- Authority
- GB
- United Kingdom
- Prior art keywords
- stage
- output
- tuned
- circuit
- april
- 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
- 230000004048 modification Effects 0.000 abstract 2
- 238000012986 modification Methods 0.000 abstract 2
- 239000013078 crystal Substances 0.000 abstract 1
- 230000010355 oscillation Effects 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
- H03B19/00—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source
- H03B19/06—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes
- H03B19/08—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device
- H03B19/10—Generation of oscillations by non-regenerative frequency multiplication or division of a signal from a separate source by means of discharge device or semiconductor device with more than two electrodes by means of a discharge device using multiplication only
Landscapes
- Inductance-Capacitance Distribution Constants And Capacitance-Resistance Oscillators (AREA)
Abstract
499,088. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd. April 25, 1938, No. 12387. Convention date, April 23, 1937. [Class 40 (v)] An oscillator and frequency multiplier arrangement, particularly for generating short waves, comprises two electron-tube stages of which the oscillator stage 1 has input and output circuits tuned to the fundamental frequency fixed by a piezo-electric crystal 10 and the multiplying stage 18 has an output circuit tuned to a desired harmonic, the output of the first stage being coupled to the input of the second stage by a condenser 16 and the tuned output circuits 12, 13 ; 23, 24 being inductively coupled together. With suitable adjustment the circuit 12, 13 acts like a pendulum to reinforce the circuit 23, 24 whenever the two oscillations are in phase, giving a high power output of the desired harmonic. In a modification, Fig. 2 (not shown), the triode 18 is replaced by a screen grid tube, and in a further modification, Fig. 3 (not shown), the two stages are combined in a single valve comprising two triodes with a common cathode.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US138508A US2193491A (en) | 1937-04-23 | 1937-04-23 | Oscillation generator and frequency multiplier |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB499088A true GB499088A (en) | 1939-01-18 |
Family
ID=22482337
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB12387/38A Expired GB499088A (en) | 1937-04-23 | 1938-04-25 | Improvements in or relating to electrical oscillators |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US2193491A (en) |
| GB (1) | GB499088A (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2459262A (en) * | 1946-03-13 | 1949-01-18 | Philco Corp | Oscillation generator and frequency multiplier |
| US11381230B2 (en) * | 2020-09-04 | 2022-07-05 | Northeastern University | Microelectromechanical tunable delay line circuit |
-
1937
- 1937-04-23 US US138508A patent/US2193491A/en not_active Expired - Lifetime
-
1938
- 1938-04-25 GB GB12387/38A patent/GB499088A/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US2193491A (en) | 1940-03-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB534749A (en) | Improvements in or relating to the frequency control of oscillators and particularly to television systems | |
| GB445558A (en) | Improvements in or relating to thermionic valve circuit arrangements | |
| GB601164A (en) | Frequency control of oscillation generators | |
| GB513679A (en) | Improvements in or relating to electrical oscillation generators | |
| GB499088A (en) | Improvements in or relating to electrical oscillators | |
| GB607550A (en) | Improvements in receivers for angle modulated waves | |
| GB289875A (en) | Improvements in or relating to high frequency circuit arrangements, radio transmitters and the like | |
| US2067366A (en) | Dynatron oscillator circuit | |
| US2543067A (en) | Oscillator converter | |
| GB783124A (en) | Improvements in or relating to electron discharge device circuit arrangements | |
| GB718959A (en) | Improvements in or relating to circuit-arrangements for the frequency changing of high-frequency oscillations | |
| US2698385A (en) | Frequency multiplication system | |
| GB603336A (en) | Improvements relating to vacuum tube harmonic-frequency generators | |
| GB415804A (en) | Improvements in or relating to thermionic oscillation generators | |
| GB310043A (en) | Improvements in or relating to high frequency thermionic generators | |
| GB586584A (en) | Oscillation generator | |
| GB373632A (en) | Improvements in or relating to thermionic oscillation generators | |
| GB693902A (en) | Improvements in or relating to superheterodyne radio receivers | |
| GB453852A (en) | Improvements in or relating to thermionic valve oscillator arrangements | |
| GB590764A (en) | Improvements in thermionic valve oscillation generators | |
| GB687748A (en) | Piezo-electric oscillator | |
| GB428581A (en) | Improvements in or relating to electrical oscillation generators | |
| GB627305A (en) | Thermionic valve circuit arrangements for producing electrical oscillations | |
| GB645185A (en) | Improvements relating to frequency conversion circuit arrangements | |
| GB383546A (en) | Improvements in or relating to electrical oscillation generators |