GB493142A - Improvements in or relating to oscillation generators - Google Patents
Improvements in or relating to oscillation generatorsInfo
- Publication number
- GB493142A GB493142A GB564237A GB564237A GB493142A GB 493142 A GB493142 A GB 493142A GB 564237 A GB564237 A GB 564237A GB 564237 A GB564237 A GB 564237A GB 493142 A GB493142 A GB 493142A
- Authority
- GB
- United Kingdom
- Prior art keywords
- circuit
- anode
- current
- reactor
- scanning coils
- 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
Classifications
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K4/00—Generating pulses having essentially a finite slope or stepped portions
- H03K4/06—Generating pulses having essentially a finite slope or stepped portions having triangular shape
- H03K4/08—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape
- H03K4/10—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only
- H03K4/26—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor
- H03K4/28—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device
- H03K4/32—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device combined with means for generating the driving pulses
- H03K4/34—Generating pulses having essentially a finite slope or stepped portions having triangular shape having sawtooth shape using as active elements vacuum tubes only in which a sawtooth current is produced through an inductor using a tube operating as a switching device combined with means for generating the driving pulses using a single tube with positive feedback through a transformer
Landscapes
- Plasma Technology (AREA)
Abstract
493,142. Valve generating circuits. FERRANTI, Ltd., and TAYLOR, M. K. Feb. 24, 1938, No. 5642/37. [Class 40 (v)] A saturating reactor is included in the circuit of an overcoupled oscillator to assist the production of saw tooth current. The reactor 3 may be included in part of the circuit common to both the scanning coils 5, 6 and the anode coil 4 of the transformer such as the anode lead as shown in Fig. 1, or the cathode lead or may be in part of the circuit individual to either the anode coil or to the scanning coils. If in the part of the circuit individual to the scanning coils, as indicated in Fig. 3, the core carries no unidirectional current and does not saturate in the required manner. Consequently the rate of increase of current is greater at the beginning and end of the stroke than at the middle. This defect is remedied by passing direct current through a biassing winding on the core or by including a permanent magnet 13 in the iron circuit of the reactor. With such an arrangement the wave form can be varied at will by altering the magnetic bias. If a tetrode is used as an oscillator the second grid is used as the back coupling anode as indicated in Fig. 5. U.S.A. Specification 2,059,683 is referred to.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB564237A GB493142A (en) | 1938-02-24 | 1938-02-24 | Improvements in or relating to oscillation generators |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB564237A GB493142A (en) | 1938-02-24 | 1938-02-24 | Improvements in or relating to oscillation generators |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB493142A true GB493142A (en) | 1938-10-05 |
Family
ID=9799910
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB564237A Expired GB493142A (en) | 1938-02-24 | 1938-02-24 | Improvements in or relating to oscillation generators |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB493142A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2493044A (en) * | 1946-06-22 | 1950-01-03 | Farnsworth Res Corp | Deflection wave generator |
| US2544213A (en) * | 1947-02-01 | 1951-03-06 | Pye Ltd | Saw-tooth current oscillation generator |
| US2611089A (en) * | 1947-08-15 | 1952-09-16 | Hartford Nat Bank & Trust Co | Circuit arrangement for generating saw-tooth oscillations |
| US3009116A (en) * | 1958-05-14 | 1961-11-14 | Blechblas Und Signalinstrument | Blocking oscillator |
-
1938
- 1938-02-24 GB GB564237A patent/GB493142A/en not_active Expired
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2493044A (en) * | 1946-06-22 | 1950-01-03 | Farnsworth Res Corp | Deflection wave generator |
| US2544213A (en) * | 1947-02-01 | 1951-03-06 | Pye Ltd | Saw-tooth current oscillation generator |
| US2611089A (en) * | 1947-08-15 | 1952-09-16 | Hartford Nat Bank & Trust Co | Circuit arrangement for generating saw-tooth oscillations |
| DE859660C (en) * | 1947-08-15 | 1952-12-15 | Philips Nv | Circuit for generating saw tooth vibrations |
| US3009116A (en) * | 1958-05-14 | 1961-11-14 | Blechblas Und Signalinstrument | Blocking oscillator |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB515308A (en) | Improvements in or relating to magnetic electron lenses | |
| GB526111A (en) | Improvements in or relating to television transmitting or receiving systems | |
| GB595317A (en) | Improvements in electric pulse generators | |
| GB493142A (en) | Improvements in or relating to oscillation generators | |
| GB521439A (en) | Focussing magnets for cathode ray tubes | |
| GB505022A (en) | Improvements in or relating to relaxation oscillation generators | |
| GB524039A (en) | Improvements in arrangements for generating electric currents of saw-tooth wave form | |
| GB537175A (en) | Improvements in and relating to cathode pay apparatus | |
| GB569339A (en) | Circuit arrangement for producing trains of sinusoidal oscillations | |
| GB497620A (en) | Device for magnetic deflection of a cathode ray | |
| GB634442A (en) | Improvements in electromagnetic scanning circuits employing thermionic valves | |
| US3018382A (en) | Frequency detector | |
| GB456666A (en) | Improvements in or relating to scanning oscillators for television and like systems | |
| GB460693A (en) | Thermionic tube electric oscillation generator circuit | |
| GB218677A (en) | Improvements in or relating to electron discharge tubes | |
| GB473836A (en) | Improvements in or relating to oscillators for scanning or like purposes | |
| GB464141A (en) | Improvements in or relating to electric oscillation generators | |
| GB522637A (en) | Improvements in or relating to generators of electric wave-forms | |
| GB354120A (en) | Improvements relating to electronic oscillators | |
| GB498986A (en) | Improvements in or relating to electric current converters | |
| GB1481263A (en) | Apparatus for measuring current flow | |
| GB480754A (en) | Improvements in or relating to oscillation generators for scanning or like purposes | |
| GB903652A (en) | Improvements in or relating to relaxation oscillator circuits | |
| GB514286A (en) | Improvements in or relating to electric oscillation generators | |
| GB555739A (en) | Improvements in and relating to current transformers |