GB536500A - Improvements in or relating to short wave electrical oscillators - Google Patents
Improvements in or relating to short wave electrical oscillatorsInfo
- Publication number
- GB536500A GB536500A GB346340A GB346340A GB536500A GB 536500 A GB536500 A GB 536500A GB 346340 A GB346340 A GB 346340A GB 346340 A GB346340 A GB 346340A GB 536500 A GB536500 A GB 536500A
- Authority
- GB
- United Kingdom
- Prior art keywords
- potentiometer
- capacity
- choke
- short wave
- resonant
- 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
- 238000010079 rubber tapping Methods 0.000 abstract 2
- 230000008878 coupling Effects 0.000 abstract 1
- 238000010168 coupling process Methods 0.000 abstract 1
- 238000005859 coupling reaction Methods 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
- H03B5/00—Generation of oscillations using amplifier with regenerative feedback from output to input
- H03B5/08—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance
- H03B5/10—Generation of oscillations using amplifier with regenerative feedback from output to input with frequency-determining element comprising lumped inductance and capacitance active element in amplifier being vacuum tube
Landscapes
- Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
Abstract
536,500. Valve generating circuits. MARCONI'S WIRELESS TELEGRAPH CO., Ltd., COCKERELL, C. S., BRAILSFORD, J. D., and CUFFLIN, M. H. Feb. 23, 1940, No. 3463. [Class 40 (v)] In a short wave oscillator stability is obtained by tapping down by means of a reactive potentiometer resonant at one end of the tuning range so that the effective tapping point varies with tuning. Fig. 1 shows the potentiometer is formed by choke L3 and capacity C3 which may be wholly or in part stray capacity and resonate just below the lowest frequency tuned together with coupling condenser C2 to form an effective capacitive potentiometer. The choke L3, if not separate from the inductances L1, L2, must be wound taking account of mutual inductance. Fig. 2 shows an arrangement in which the potentiometer comprises the resonant condenser shunted inductance LC3 and the capacity C3 which may be partly stray capacity. In this arrangement the anode is earthed and the cathode fed through choke L4. Specification 529,168 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB346340A GB536500A (en) | 1940-02-23 | 1940-02-23 | Improvements in or relating to short wave electrical oscillators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB346340A GB536500A (en) | 1940-02-23 | 1940-02-23 | Improvements in or relating to short wave electrical oscillators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB536500A true GB536500A (en) | 1941-05-16 |
Family
ID=9758789
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB346340A Expired GB536500A (en) | 1940-02-23 | 1940-02-23 | Improvements in or relating to short wave electrical oscillators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB536500A (en) |
-
1940
- 1940-02-23 GB GB346340A patent/GB536500A/en not_active Expired
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB523648A (en) | Improvements in or relating to electrical oscillation generators | |
| GB551344A (en) | Improvements relating to the frequency control of thermionic valve oscillators | |
| GB536500A (en) | Improvements in or relating to short wave electrical oscillators | |
| GB604854A (en) | Improvements in and relating to mixing circuits such as are used in superheterodyne receivers | |
| GB1166122A (en) | Improvements in or relating to resonant circuits for UHF | |
| GB683939A (en) | Improvements in or relating to superheterodyne radio-receivers | |
| GB668498A (en) | Improvements in or relating to superheterodyne radio-receivers | |
| US2389879A (en) | Frequency modulation | |
| GB547837A (en) | Improvements relating to frequency modulation | |
| GB580824A (en) | Improvements in electric oscillation generators | |
| US2928936A (en) | Self-oscillating additive mixer circuit | |
| GB876052A (en) | Improvements in or relating to oscillation generators | |
| GB494884A (en) | Improvements in or relating to electrical oscillation generators | |
| GB801351A (en) | Improvements in or relating to condenser microphone arrangements | |
| SU77468A3 (en) | UHF receiver | |
| GB762745A (en) | Improvements in or relating to frequency-changer circuit-arrangements for use at very high frequencies | |
| GB552486A (en) | Improvements in or relating to mixing circuits for use in superheterodyne receivers | |
| GB527649A (en) | Tuning arrangement for oscillatory circuits | |
| GB139640A (en) | Improvements in and relating to wireless signalling systems | |
| GB507495A (en) | Improvements in oscillatory circuit arrangements for modulated ultra-short waves | |
| GB428581A (en) | Improvements in or relating to electrical oscillation generators | |
| GB1001871A (en) | Improvements relating to self-oscillating mixer circuits | |
| GB966448A (en) | Improvements in and relating to oscillator circuits | |
| GB1043750A (en) | Parametric amplifier | |
| GB646475A (en) | Improvements in or relating to circuit arrangements in which high-frequency oscillations are generated or amplified |