FR2579822A1 - ELECTRICAL POWER SUPPLY FOR MAGNETRON HEATING FILAMENT - Google Patents
ELECTRICAL POWER SUPPLY FOR MAGNETRON HEATING FILAMENT Download PDFInfo
- Publication number
- FR2579822A1 FR2579822A1 FR8604537A FR8604537A FR2579822A1 FR 2579822 A1 FR2579822 A1 FR 2579822A1 FR 8604537 A FR8604537 A FR 8604537A FR 8604537 A FR8604537 A FR 8604537A FR 2579822 A1 FR2579822 A1 FR 2579822A1
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- FR
- France
- Prior art keywords
- heating filament
- magnetron
- power supply
- voltage
- alternations
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- 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.)
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Classifications
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- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B6/00—Heating by electric, magnetic or electromagnetic fields
- H05B6/64—Heating using microwaves
- H05B6/66—Circuits
- H05B6/666—Safety circuits
-
- 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
- H03B9/00—Generation of oscillations using transit-time effects
- H03B9/01—Generation of oscillations using transit-time effects using discharge tubes
- H03B9/10—Generation of oscillations using transit-time effects using discharge tubes using a magnetron
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Control Of High-Frequency Heating Circuits (AREA)
- Microwave Tubes (AREA)
- Medicines That Contain Protein Lipid Enzymes And Other Medicines (AREA)
Abstract
L'ALIMENTATION ELECTRIQUE POUR FILAMENT CHAUFFANT DE MAGNETRON COMPREND UNE SOURCE DE TENSION ALTERNATIVE 23 CONNECTEE AU FILAMENT CHAUFFANT 22 DU MAGNETRON 20 ET DES MOYENS DE REGULATION 24 CONNECTES EN SERIE AVEC CETTE SOURCE ET ADAPTES A COMMANDER LE NOMBRE D'ALTERNANCES D'UNE MEME POLARITE DE LA TENSION ALTERNATIVE QUI SONT APPLIQUEES AU FILAMENT CHAUFFANT 22 PENDANT UN INTERVALLE DE TEMPS PREDETERMINE ET A APPLIQUER TOUTES LES ALTERNANCES DE LA POLARITE OPPOSEE. L'ALIMENTATION COMPREND EN OUTRE DES MOYENS DE COMMANDE 25 ADAPTES A APPLIQUER UN SIGNAL DE COMMANDE AUX MOYENS DE REGULATION 24 SUIVANT LE RAPPORT D'UTILISATION REQUIS POUR LE MAGNETRON20. APPLICATION AUX SYSTEMES RADAR.THE POWER SUPPLY FOR HEATING FILAMENT FROM MAGNETRON INCLUDES AN ALTERNATIVE 23 VOLTAGE SOURCE CONNECTED TO THE HEATING FILAMENT 22 OF THE MAGNETRON 20 AND 24 REGULATION MEANS CONNECTED IN SERIES WITH THIS SOURCE AND SUITABLE TO CONTROL THE NUMBER OF ALTERNATIONS OF THE SAME OF THE ALTERNATIVE TENSION WHICH ARE APPLIED TO THE HEATING FILAMENT 22 DURING A PREDETERMINED TIME INTERVAL AND TO APPLY ALL THE ALTERNATIONS OF THE OPPOSITE POLARITY. THE POWER SUPPLY ALSO INCLUDES 25 CONTROL MEANS SUITABLE TO APPLY A CONTROL SIGNAL TO 24 REGULATING MEANS FOLLOWING THE REQUIRED USE REPORT FOR THE MAGNETRON20. APPLICATION TO RADAR SYSTEMS.
Description
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une tension élevée de 15 kV, par exempie. ou plus. De plus. a high voltage of 15 kV, for example. or more. Furthermore.
l'inertie thermique de la cathode. c est-à-dire le temps nécessaire pour que les changements de température se the thermal inertia of the cathode. that is, the time it takes for the temperature changes
produisent, doit également tre prise en compte. produce, must also be taken into account.
L'invention a pour objet une alimentation pour filament chauffant de magnétron qui permette d'utiliser le The subject of the invention is a power supply for a magnetron heating filament which makes it possible to use the
magnétron dans une large gamme de rapports d'utilisation. magnetron in a wide range of usage reports.
L'alimentation pour filament chauffant de magnétron selon la présente invention comprend une source de tension alternative connectée au filament chauffant du magnétron, des moyens de régulation connectés en série avec cette source et utilisables pour commander le nombre d'alternances d'une même polarité de la tension alternative qui sont appliquées au filament chauffant pendant un intervalle de temps prédéterminé et pour appliquer toutes les alternances de la polarité opposée, et des moyens de commande utilisables pour appliquer un signal de commande aux moyens de régulation suivant le rapport d'utilisation The magnetron filament power supply according to the present invention comprises an AC voltage source connected to the magnetron heating filament, regulation means connected in series with this source and usable for controlling the number of alternations of the same polarity of the magnetron. the AC voltage which are applied to the heating filament for a predetermined time interval and to apply all alternations of the opposite polarity, and control means operable to apply a control signal to the control means according to the usage ratio
nécessaire du magnétron.necessary magnetron.
L'invention va maintenant etre décrite à l'aide des dessins annexés, dans lesquels: - la figure 1 illustre le fonctionnement de l'alimentation selon l'invention; - la figure 2 est un schéma du circuit d'une forme de réalisation de l'invention; et - la figure 3 est un schéma du circuit d'une The invention will now be described with the aid of the accompanying drawings, in which: FIG. 1 illustrates the operation of the feed according to the invention; FIG. 2 is a diagram of the circuit of one embodiment of the invention; and FIG. 3 is a diagram of the circuit of a
partie de la figure 2.part of Figure 2.
La figure i représente l'onde de tension appliquée au filament chauffant du magnétron. Cette tension est sinusoïdale mais, comme on le voit, certaines des alternances négatives peuvent @tre supprimées pour réduire la puissance fournie au filament chauffant. La plage de commande de la puissance s'étend de l'application de la forme d'onde complète de la tension, utilisée lorsque le magnétron est en attente, à l'application des alternances positives seulement de la tension utilisée lorsque le Figure i shows the voltage wave applied to the magnetron heating filament. This voltage is sinusoidal but, as can be seen, some of the negative half-waves can be suppressed to reduce the power supplied to the heating filament. The power control range extends from the application of the full waveform of the voltage, used when the magnetron is on standby, to the application of the positive half-waves only of the voltage used when the
magnétron fonctionne à son rapport d'utilisation maximal. magnetron operates at its maximum utilization ratio.
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alternances positives traverse la résistance 26. positive alternations crosses resistance 26.
Les moyens de commande 25 connectés a la grille di transistor à effet de champ 24 sont utilisés Dour appliquer une tension de commande à cette grille et débloquer ou bloquer ce transistor aux instants appropriés. Le signal de commande délivré par les moyens de commande 25 sera donc avantageusement une tension en créneaux à durée de cycle variable. Les moyens de commande 25 fixent la durée de cyci appropriée correspondant au rapport d'utilisation fixé du magnétron. La fréquence de récurrence de la commande dépend de l'inertie thermique du filament chauffant 22 et est un intervalle de temps prédéterminé pour n'importe quel The control means 25 connected to the field effect transistor gate 24 are used to apply a control voltage to this gate and to unblock or block this transistor at the appropriate times. The control signal delivered by the control means 25 will therefore advantageously be a slot voltage with variable cycle time. The control means 25 sets the appropriate cycle time corresponding to the fixed utilization ratio of the magnetron. The frequency of recurrence of the control depends on the thermal inertia of the heating filament 22 and is a predetermined time interval for any
magnétron particulier.particular magnetron.
En fonctionnement, le transistor à effet de champ 24 laisse toujours passer les alternances d'une même polarité de la tension d'alimentation. par exemple les alternances positives, même si le signal de commande appliqué à la grille de ce transistor le bloque efficacement. Le signal de commande ne détermine que les instants auxquels le transistor à effet de champ 24 laisse également passer les alternances de l'autre polarité. Par conséquents il suffit de débloquer et bloquer alternativement le transistor à effet de champ 24 pour fair varier la puissance fournie au filament chauffant 22 du magnétron 20 de la moitié de sa valeur à sa valeur nominale In operation, the field effect transistor 24 always lets the alternations of the same polarity of the supply voltage. for example the positive half-waves, even if the control signal applied to the gate of this transistor blocks it effectively. The control signal only determines the times at which the field effect transistor 24 also passes the alternations of the other polarity. Consequently, it is sufficient to unlock and block alternately the field effect transistor 24 to vary the power supplied to the heating filament 22 of the magnetron 20 by half of its value at its nominal value.
suivant les besoins.as needed.
Bien que le signal de commande du transistor à effet de champ 24 n'ait besoin d'être qu'une simple tension en créneaux, le fait que le filament chauffant 22 du magnétron 20 soit à une très haute tension peut causer des Although the control signal of the field effect transistor 24 need only be a simple crimped voltage, the fact that the heating filament 22 of the magnetron 20 is at a very high voltage can cause
difficultés pour l'application de ce signal au transistor. difficulties in applying this signal to the transistor.
Si une simple tension continue était appliquée, l'ensemble du circuit de commande devrait être isolé pour la tension appliquée au filament de chauffage. La figure 3 illustre un façon de résoudre ce problème en utilisant un train d'impulsions et un transformateur d'isolement. Les moyens d uoDT uewTTep uolsuaq el ap sma^TWe6u;a sa^TATsod samueuiaqIe xne saqIe suoluaw sal sarno uawauuoTT3uo} ap sapow ap anpuaj awweO aun suep uodJU6eW Bl JaSTiTj4np qWaJad Tnb am ennat;ue Je1 suep aBqTssod sed;Te9u snb uotst!Jd aun DaAe uo-4ruGew np que+Jneqm quaweIT* ne aTuJno+ a3uesstnd el Jasop ap qawiad uoTUaAUTTI uoIas uoiTe4uawTIe1 uozTsanb ua uotenIdde,1 Jnod xnaloo quateipuaJ. sal Tnb a^TAeuJaBle uoisuaB el Bp oJiz ded a6essed np uoTimaqp ap sa5eluow sap quaqTssameu sJoqsTlAqq.ed sepuewWOM s;Tnzjz sal anb slaq snuuom sJ-Tsodstp sa1 's-nbTIdwo3 uoiesTỏJL4uAs ap sa6equow ap sed aBTssameu au a a3eDi+Ba;a aldwTs 4sa snssap -T3 4TJmep uoiequawllei ap Bpuewwom ap awamsAs aS 0gnbolq Bsa JoqsTsueJ alB anbsJol uoTe4uawiTeTp uoisua el ap sDueujae s ap Jassed JassTeT U5eS+ ap BnaqalloBD al la JnafqaweI aSqua agnauuDo apotp aun maAe aBjelodtq Ào;sisuesJ un JasTITfrnp alqTssod qsa IT euSeJp Bl a aBmJnos el aB.ua quasiqut apoTp Jed a6eldnoD oz uos naAe dweqm ap qam.+a i joqsTsueJ. np naTI nV -sanbi4u6ewojqmalg no sanbiuoqDnaleordo juawalosT;a aBtIednom sabOequow sap aldwaxa ded JaAoldwa nad uo aJTessamDu anbTueAleO UawaBoTS, 1 qua-Jnsse slTS rZ dwequ ap.4a±a JoqsisueJq np alT.JD el V apuewwoD ap uoTsuaq el Aanbildde Jnod sqsTT;In aJq luaAnad saOequow sajnea apuewwoa ap IeUBTS np asJnos ei;a tZ dweqD ap Ba+Ba V joDs;sueT j al aBT ua aBTesscaomu 4uawalosTT aJnsse Tú suoTslndwiTP una wJoBsueJ4 aW o -r dweqm ap -aj}a e joqsTsueJ np aITTiJ el -ç aenbrIdde qsa inb anuiuom uoisua aun qsa Zú suoTsindwip uoilaqp ap qTnfldT np aTdSos ap Teu6Ts a9 'I quawaloSTp suoTslndwT p inalewJo+suejq un.p aBJeTpewiaquTl jed zú suoTslndwT.p uo;DTaqp ap qTnmii un e saenbiTdde quos;a apuewwo3 3p TeubTs np uoDTel snos uou no sag^Tigp quos suoTslndwT sa3 'aldwaxa.ed 4ZHI 09 ap aBuanbgr + aun i suoistndwT sap aJ^lTP UTnb 7a enbTidde 4sa apuiwwoD ap leuOis el ilnbne 0úO suoTsindciTP inaqe-4euea un queuuajdwom epuewwon anuanbgsuoD ua saeI3TDow Ruajos 5 O1sT-Ueid tnor a apoT-p aqnoi ap sqTjelod sai anb u-esoddns ua saes-eAui ai._ quawallaJnqu u,'uanad lue+. ne4p quawjeTT_ np I.I eu--pTe If a single DC voltage was applied, the entire control circuit should be isolated for the voltage applied to the heating filament. Figure 3 illustrates one way of solving this problem using a pulse train and isolation transformer. Means of UoUt UewTTep uolsuaq el ap sma ^ TWe6u to his TATsod samueuiaqIe saqIe suoluaw sal sarno uawauuoTT3uo} ap sapow ap anpuaj awweO aun suep uodJU6eW Bl JaSTiTj4np qWaJad Tnb am ennat; ue suep aBqTssod sed; Te9u snb uotst! Jd aua Daae uo-4ruGew np que + Jneqm quaweIT * neAuJno + a3uesstnd el Jasop ap qawiad uoTUaAUTTI uoIs uoiTe4uawTIe1 uozTsanb ua uotenIdde, 1 Jnod xnaloo quateipuaJ. sal Tnb a ^ TUb uoisuaB el Bp oJiz de a6essed np uoTimaqp ap sa5eluow sap quaqTssameu sJoqsTlAqq.ed sepuewWOM s; Tnzjz sal anb slaq snuuom sJ-Tsodstp sa1 's-nbTIdwo3 uoiesTỏJL4uAs apaecequow ap sed aBTssameu au a a3eDi + Ba; aldwTs 4SA snssap -T3 4TJmep uoiequawllei ap Bpuewwom ap awamsAs aS 0gnbolq Bsa JoqsTsueJ ALB anbsJol uoTe4uawiTeTp uoisua el ap sDueujae s ap Jassed JassTeT U5eS + ap BnaqalloBD al the JnafqaweI aSqua agnauuDo apotp aun MAAE aBjelodtq AO; sisuesJ a JasTITfrnp alqTssod QSA IT euSeJp bl aBmJnos el aB.ua quasiqut apoTp Jed a6eldnoD ufo naae dweqm ap qam. + ai joqsTsueJ. np naTI nV -sanbi4u6ewojqmalg no sanbiuoqDnaleordo juawalosT; a aBtIed name sabOequow sap aldwaxa ded JaAoldwa nad uo aJTessamDu anbTueAleO UawaBoTS, 1 qua-Jnsse slS rZ dwequ ap.4a ± a JoqsisueJq np alT.JD el V apuewwoD ap uoTsuaq el Aanbildde Jnod sqsTT; In luaAnad saOequow sajnea apuewwoa ap IeUBTS np asJnos ei; a tZ dweqD ap Ba + Ba VjDs; sueT jal aBT ua aBTesscaomu 4uawalosTT aJnsse TU suoTslndwiTP aa wJoBsueJ4 aW o -r dweqm ap -ajjjjjjjjjjjjjjjjjjjjjj QSA inb anuiuom uoisua aun QSA zú suoTsindwip uoilaqp qTnfldT ap ap np aTdSos Teu6Ts a9 'I quawaloSTp suoTslndwT p + inalewJo suejq un.p aBJeTpewiaquTl jed zú suoTslndwT.p uo; DTaqp ap qTnmii e saenbiTdde quos; has apuewwo3 3p TeubTs np uoDTel SNOS uou no sag ^ Tigp quos suoTslndwT sa3 'aldwaxa.ed 4ZHI 09 ap aBuanbgr + aun i suoistndwt sap aJ ^ lTP UTnb 7a enbTidde 4sa apuiwwoD ap leuOis el ilnbne 0úO suoTsindciTsindciTP inaqe-4euea a queuuajdwom tuewwon anuanbgsuoD ua saeI3TDow Ruajos 5 O1sT-Ueid tnor a apoT-p aqnoi ap s qTjelod sai anb u-esoddns ua saes-eAui ai_ quawallaJnqu u, 'uanad read +. ne4p quawjeTT_ np I.I eu - pTe
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Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB08508328A GB2173062A (en) | 1985-03-29 | 1985-03-29 | Magnetron heater power supply |
Publications (2)
Publication Number | Publication Date |
---|---|
FR2579822A1 true FR2579822A1 (en) | 1986-10-03 |
FR2579822B1 FR2579822B1 (en) | 1989-04-28 |
Family
ID=10576928
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
FR868604537A Expired FR2579822B1 (en) | 1985-03-29 | 1986-03-28 | ELECTRICAL SUPPLY FOR MAGNETRON HEATING FILAMENT |
Country Status (5)
Country | Link |
---|---|
DE (1) | DE3609470A1 (en) |
FR (1) | FR2579822B1 (en) |
GB (1) | GB2173062A (en) |
IT (1) | IT1190245B (en) |
SE (1) | SE8601358L (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4136879A1 (en) * | 1991-11-09 | 1993-05-13 | Ant Nachrichtentech | THROUGH A TRANSFORMER HEATING TUBE |
DE4328557C1 (en) * | 1993-08-25 | 1994-09-29 | Ant Nachrichtentech | Method for compensating for ageing phenomena of a tube and an arrangement |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2563740A (en) * | 1947-12-05 | 1951-08-07 | Louis W Parker | Filament power supply system for radio receivers |
FR1413460A (en) * | 1963-11-01 | 1965-10-08 | Thomson Houston Comp Francaise | Improvements to power supplies for thermionic emission devices |
GB1323551A (en) * | 1969-04-16 | 1973-07-18 | Hirst Electric Ind Ltd | Control circuits |
EP0006785A1 (en) * | 1978-06-13 | 1980-01-09 | Thomson-Csf | Cathode heating device for electron power tube and emitter including such a device |
GB2080050A (en) * | 1980-07-02 | 1982-01-27 | Quisear Ltd | Reduction of electrical power consumption |
US4464611A (en) * | 1983-08-22 | 1984-08-07 | Rca Corporation | Line cathode heating and protection circuit |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1235683A (en) * | 1967-11-07 | 1971-06-16 | Diamond H Controls Ltd | A.c. power control |
-
1985
- 1985-03-29 GB GB08508328A patent/GB2173062A/en not_active Withdrawn
-
1986
- 1986-03-20 DE DE19863609470 patent/DE3609470A1/en not_active Withdrawn
- 1986-03-24 SE SE8601358A patent/SE8601358L/en not_active Application Discontinuation
- 1986-03-27 IT IT47829/86A patent/IT1190245B/en active
- 1986-03-28 FR FR868604537A patent/FR2579822B1/en not_active Expired
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2563740A (en) * | 1947-12-05 | 1951-08-07 | Louis W Parker | Filament power supply system for radio receivers |
FR1413460A (en) * | 1963-11-01 | 1965-10-08 | Thomson Houston Comp Francaise | Improvements to power supplies for thermionic emission devices |
GB1323551A (en) * | 1969-04-16 | 1973-07-18 | Hirst Electric Ind Ltd | Control circuits |
EP0006785A1 (en) * | 1978-06-13 | 1980-01-09 | Thomson-Csf | Cathode heating device for electron power tube and emitter including such a device |
GB2080050A (en) * | 1980-07-02 | 1982-01-27 | Quisear Ltd | Reduction of electrical power consumption |
US4464611A (en) * | 1983-08-22 | 1984-08-07 | Rca Corporation | Line cathode heating and protection circuit |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE4136879A1 (en) * | 1991-11-09 | 1993-05-13 | Ant Nachrichtentech | THROUGH A TRANSFORMER HEATING TUBE |
US5517082A (en) * | 1991-11-09 | 1996-05-14 | Ant Nachrichtentechnik Gmbh | Traveling wave tube heating coil power supply with varying frequency AC current limiting means |
DE4328557C1 (en) * | 1993-08-25 | 1994-09-29 | Ant Nachrichtentech | Method for compensating for ageing phenomena of a tube and an arrangement |
Also Published As
Publication number | Publication date |
---|---|
DE3609470A1 (en) | 1986-10-09 |
IT8647829A0 (en) | 1986-03-27 |
SE8601358L (en) | 1986-09-30 |
SE8601358D0 (en) | 1986-03-24 |
FR2579822B1 (en) | 1989-04-28 |
GB2173062A (en) | 1986-10-01 |
GB8508328D0 (en) | 1985-05-09 |
IT1190245B (en) | 1988-02-16 |
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