PL124882B1 - Network for pulse control of power transistor base,especially for pulse voltage converters - Google Patents

Network for pulse control of power transistor base,especially for pulse voltage converters Download PDF

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Publication number
PL124882B1
PL124882B1 PL21781179A PL21781179A PL124882B1 PL 124882 B1 PL124882 B1 PL 124882B1 PL 21781179 A PL21781179 A PL 21781179A PL 21781179 A PL21781179 A PL 21781179A PL 124882 B1 PL124882 B1 PL 124882B1
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PL
Poland
Prior art keywords
transistor
additional
control
winding
emitter
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PL21781179A
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Polish (pl)
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PL217811A1 (en
Inventor
Alfred Matusewicz
Andrzej Pietkiewicz
Jerzy Jackowski
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Politechnika Gdanska
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Priority to PL21781179A priority Critical patent/PL124882B1/en
Priority to DE19803027754 priority patent/DE3027754C2/en
Publication of PL217811A1 publication Critical patent/PL217811A1/xx
Publication of PL124882B1 publication Critical patent/PL124882B1/en

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Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02MAPPARATUS FOR CONVERSION BETWEEN AC AND AC, BETWEEN AC AND DC, OR BETWEEN DC AND DC, AND FOR USE WITH MAINS OR SIMILAR POWER SUPPLY SYSTEMS; CONVERSION OF DC OR AC INPUT POWER INTO SURGE OUTPUT POWER; CONTROL OR REGULATION THEREOF
    • H02M3/00Conversion of dc power input into dc power output
    • H02M3/02Conversion of dc power input into dc power output without intermediate conversion into ac
    • H02M3/04Conversion of dc power input into dc power output without intermediate conversion into ac by static converters
    • H02M3/10Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode
    • H02M3/145Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal
    • H02M3/155Conversion of dc power input into dc power output without intermediate conversion into ac by static converters using discharge tubes with control electrode or semiconductor devices with control electrode using devices of a triode or transistor type requiring continuous application of a control signal using semiconductor devices only
    • HELECTRICITY
    • H03ELECTRONIC CIRCUITRY
    • H03KPULSE TECHNIQUE
    • H03K17/00Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/601Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors using transformer coupling

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  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • Dc-Dc Converters (AREA)

Description

Przedmiotem wynalazku jest uklad impulsowego sterowania bazy tranzystora mocy, zwlaszcza do im¬ pulsowych przetwornic napiecia.W niektórych ukladach elektronicznych, na przy¬ klad w impulsowych przetwornicach napiecia stale¬ go zachodzi koniecznosc okresowego, impulsowego wlaczania kluczujacego tranzystora mocy. Obwód sterujacy baze takiego tranzystora powinien zapewnic wymagana wartosc pradu wprowadzanego do bazy w stanie wlaczenia tranzystora oraz mozliwosc szyb¬ kiego wyprowadzenia ladunków nadmiarowych z ba¬ zy podczas wylaczania.Znane i stosowane jest rozwiazanie, w którym baza tranzystora mocy jest sterowana z wtórnego uzwoje¬ nia transformatora sterujacego. Pierwotne uzwojenie transformatora jest zasilane ze zródla napiecia stale¬ go wlaczonego szeregowo z tranzystorem sterujacym.Tranzystor sterujacy jest kluczowany okresowym prze¬ biegiem prostokatnym. Podczas przewodzenia tran¬ zystora sterujacego wzrasta energia strumienia magne¬ tycznego w rdzeniu transformatora. Po zablokowaniu tranzystora sterujacego, wobec koniecznosci zacho¬ wania ciaglosci amperozwojów pradu magnesujacego, pojawia sie prad w uzwojeniu wtórnym transformatora, zamykajacy sie w obwodzie bazy sterowanego tran¬ zystora mocy. Wartosc pradu bazy jest jednoznacznie zwiazana z wartoscia pradu plynacego w uzwojeniu pierwotnym w chwili zablokowania tranzystora ste¬ rujacego.Wskutek przekazywania energii z transformatora 10 15 20 25 30 do obwodu bazy energia zgromadzona w rdzeniu zmniejsza sie. W nastepnym okresie nastepuje uzu¬ pelnienie energii magnetycznej w rdzeniu podczas przewodzenia tranzystora sterujacego i ponowne ste¬ rowanie bazy tranzystora mocy po zablokowaniu tran¬ zystora sterujacego.Wada przedstawionego rozwiazania jest to, ze prad w uzwojeniu wtórnym, sterujacy baze tranzystora mocy, silnie zalezy zarówno od wartosci napiecia za¬ silajacego strone pierwotna transformatora, jak tez od wspólczynnika wypelnienia. 8, zdefiniowanego jako stosunek wymaganego czasu przewodzenia sterowa¬ nego tranzystora mocy do okresu kluczowania.Czesciowe zmniejszenie zaleznosci pradu steru¬ jacego baze od wspólczynnika wypelnienia 6, przy niezbyt duzej wartosci wspólczynnika 6, na przyklad dla 5<0,6, uzyskuje sie stosujac szeregowo z uzwoje¬ niem pierwotnym transformatora odpowiednio za¬ projektowany rezystor ograniczajacy, zablokowany kon¬ densatorem. Sposób ten nie daje jednak mozliwosci uniezaleznienia pradu bazy od wartosci napiecia zasila¬ jacego. Wada stosowanego rozwiazania z rezystorem szeregowym jest strata mocy w rezystorze.Dodatkowa wada jest to, ze rezystor szeregowy i kondensator blokujacy tworza ogniwo calkujace* opózniajace prawidlowa reakcje ukladu sterowan'a przy szybkich zmianach wspólczynnika 5 lub napie¬ cia zasilajacego, nosci dynamicznych ukladu sterujacego.Istota wynalazku polega na tym, ze szeregowo z 124 882IM 882 4 uzwojeniem pierwotnym, transformatora sterujacego jesjfc wlaczony dodatkowy |ranzystor sterowany z wyjs¬ cia) komparatora. W epiterze tlanzyBtfrrt Sterujacego z^aJ4uje sie rezystor próbkujacy. Do wejsc kompara- tira^przylozone jest napiecie odniesienia i napiecia z rezystora próbkujacego. Pomiedzy górna koncówki uzwojenia pierwotnego transformatora i przewodem zergwym_ _wlaczona jest dioda podtrzymujaca prad wlaczona jest dioda podtrzymujaca „ Be pierwotnym^transformatora po waniu tranzystora dodatkowego, 10 £ 20 25 oraz dioda bloku¬ jaca, podtrzymujaca stai zablokowania tranzystora dodatkowego, wlaczona pomiedzy wejsciem kompa¬ ratora i górna koncówka .transformatora.Dodatkowy tranzystor (jest nasycony, gdy prad w uzwojeniu pierwotnym Jest mniejszy od zalozono wartosci maksymalnej i zostaje automatycznie zabloko¬ wany z chwila osiagniecia tej wartosci pradu. Wskutek zablokowania tranzystora dodatkowego uzwojenie pier¬ wotne zostaje odlaczona od napiecia jsasilaj^cego a prad w uzwojeniu zamyka sie przez diode podtrzymu¬ jaca i plynie az do momentu zablokowania tranzysto¬ ra sterujacego. Od momentu zabloKowatfta TflfeyS- tora sterujacego uklad sterowania dziala tak samo, jak w znanym rozwiazaniu* Równoczesnie z zablokowa- niem tranzystora sterujacego zostaje ponownie wla¬ czony tranzystor, dodatkowy i uklad jesjt przygoto¬ wany do uzupelnienia zapasu energii w rdzeniu tran¬ sformatora w nastepnym okresie, w stanie wlaczenia tranzystora sterujacego.W ukladzie sterownia WetBut ^^altóku T#ySku- <& je sie stabilizacje pradu w 'uzwojejiiu oierwotuym transformatora sterujacego, niezaleznie od napiecia zasilajacego i wspólczynnika 5. Dzieki temu prad sterujacy baze tranzystora mocy równiez nie zalezy oU^l^pieaa za«ib»cegq i.wsp^czymiilca 8.^ ^Jkia4 wedjnt; .wynalazku nie ^awi«ra ^rezystora WP&wadzafec&p l^ap ^n^cjr^ i nie^wjmaga^stoso- wanifl konden$atqra blokuja^cegp, którj^w^ znanym rozwiazaniu opóznia reakcje ukladu ua,skokowe zmia¬ ny wspólczynnika 5 lub napiecia zaznajacego. u, ^zedmiot Wynalazku jest uwidoczniony w^jprzy- ltfadzie wykonania na fysunku^aa^którym Lfig: 1 :grzed- stawia uproszczony schemat ukladu^jmpulsoweco £tg- 'rowafclfi bazy Jjaflzystjpra hk^^ Cif. 2 prz^d|tawia T^ktypana r^^sje^ wy^jw^^ . Jak pokazanjo na fig. _ 1 emfj&r dodatkowego^tran¬ zystora T^rfcoJaczony. jest vz plusem ^napiecja^ zgsya- jaeefco, *fts kplefokr te*itraflgyftpj&;Z;górjU^ koncówka luwojc^ Jpiejirotnego4ranaf<^ z Ijato- c4a**i diorfy Wakujacej X|, oi^ podtrzyjcujacej t Dp.Anoda diody vpodtrzyn(iuiaeej E^ pojt|czona,.„ jest z przewoddh z&omjmy a 4b„ anpdy^ 4Jk^^Wol^cjpj 1^, Tir*j*a«me j#j^fc4n*^z, ^ej^. k^^geg, K dolaStone AwteJ^eiiiie w 4o ifcódfe i^Jecja^.p^njeaje- -¦Ba,;»* Dt^e wjeflcie komparatora Kfcajeclaogec z emitrem tranzystora atejujaccgo T3, p^ntredz^ emi¬ terem którego a pi^ewc4fim. zdrowym wLiczojpr jest ^W^stor próbkujacy B^WyjcieJfep^p^t^a^K;jest /petajcafone z baza tranzystora jWa||:o^ej^ T^^^cdu wylaczenia tego tranzystora -pp ^sj^gniecju ^czo^ej wartosci rpAdu w, uzw^ojeniu/plej^ojnym t^nsf^rma- tofra Tky Uzwojenie Wtórne transibr^tofa TL dou¬ czone jest odpowiednimi koncówkamido bazy i emi¬ tera sterowanego tranzystora mpcy T^. „..i..Na fig. 2 pokazany jest przyklad praktycznej rea- 35 40 lizacji ukladu sterowania w&lijfe # ^itinfczki'. R&e komparatora spelnia tranzystor T4, którego baza znaj¬ duje sie na potencjale -cJdniesien)! JHst ^ wseslonym spadkami napiec na dwócll diodach D15 D2, a emiter tranz^fóra ¥4 \M polaczony z emiterem tranzystora sterujEceiS t2. ?&KRtfla czesc ukladu jest taka sama jak w ukladzie opisanym powyzej* .Dzialanie ukladu jrzedstawionejS 31 w- 1 jest nasYepuja^e. frinz^ltor 'sterujacy ^*vj% kluczo¬ wany przebiegiem prostokatnym o djtfSHfc f i o re¬ gulowanym wspólczynniku wypelnienia $. Przy sta¬ nie wysokim na bazie T2 wzrasta prad w uzwojeniu pierwotnym transformatora zwiekszajac energie w rdzeniu. Gdy spadek napiecia na r^^tfctle^ próbku- ftcym fe^ prz&3ttcfy wartosc napiecia ^odniesienia U0 na wejsciu komparatora K, ftr$n%$tft WAlkowy Tj zostaje wylaczony. Prad uzwojenia pierwotnego traWsfoTmatóra zimknie feie wówczas ^p&ez diode podtrzymujaca Dp. Równoczesnie dioda blokujaca Db spowoduje obnizenie napiecia oa^iesiema, co prowadzi do zablokowania ukladu w stanie nieprze- wSuMia mtzysm t*3. W thwtfi wsaczenia tran- z^tófoa sterujacego T2 znika napiecie na rezystorze próbkujacym IU, wskutek czego zmienia sie stan wyjs¬ cia komparatora 1 Itrai&yWr TT3 ^JSfetije ponownie wla¬ czony. W 6tanje wylaczenia tranzystora Ta energia z rdzenia jest przekazywana do sterowania IJazy TiST- zystora mocy Tt. Po wlaczeniu tranzystora T2 tran¬ zystor Tj zostaje wylaczony i rozpoczyna sie kclejny cyjfl uzupelniania energii w rdzeniu.Parametry ukladu sterowania wedlug wynalazku powinny byc tak zapfofektbwane, aby przy najnizszym napieciu zasilajacym i najwiekszej wartosci wspólczyn¬ nika wypelnienia 6max w odcinku czasu (1 — 5maz) T rajacego zdazyl Zastrzezenie f a t e n to w e Uklad impulsowego *sterowanfa lBazy tran^tórSfefto- ra mocy, zwlaszcza do impulsowych przetworhic na- piecia, .zawierajacy transformator sterujacy, ^tofego ^^U^A^.^fc./ *it .*«. -.»«.*• l*.--j»' »iAy uzwojenie wtórne jest wlaczone pomiedzy Bazia i emi- Crad w uzwojeniu pierwotnym transformatora ste- acego zdazyl osiagnac zalozona wartosc maKSymalna. terem sterowanego juerwotne silajaceg< tranzystora mocy, uzwoje jq, klucz^anegb przeDiegfern .plrosto^fiiynt,'%1^ mienny 'tym, ze 'zawiera lelemefety ^w^or^aclij^?: dodatkowy ^dodatkowy ^janzystoj t (T3), rezystor *pr^DRuf4^y ^p^* rator &C), zroafo 'Wpi&ia .*odKieften& l^u0)* 50 ) -i atóiic ibióku^ia fe»w) je&t polaczony z plusem n^iecia 2as jdiode^ podtrzymujaca v*^p- polaczone tak ze emiter ar '"* przewodem zerowym, Teino"wejsSe^'mp^r^rt ^) jest pólroczne ze zrócliem napiecfa bdnieSie%fa ftJo) ij^z^jo^ d|<^ JSfokuficej v (^bV a "'Sruliie^ ^ijSHe fc^paratora, (K) ^? Vmiterem 'tnuiz^tóJt Ili^flWKo Hmiedzy emiterem tranzystora steruiaCTffgb CTa ui^DTzevQde|n z^TOn wl^feny jeSt^rezystSrJgr^ z baza dodatkowego tranzystora' CTs) w cera^ylCJSe- nia tego tranzystora po osiagnieciu zalozonej^w^fRci 65 pradu w uzwojeniu pierwotnym transtarmatofa \JTU124 83Z Fig, 1 Fig. 2 PLThe present invention relates to an impulse control system for the base of a power transistor, especially for pulsed voltage converters. In some electronic systems, for example pulsed DC voltage converters, it is necessary to periodically turn on the keying power transistor. The control circuit of the base of such a transistor should ensure the required value of the current introduced to the base when the transistor is turned on and the possibility of quick discharge of excess charges from the base during turning off. It is known and used in which the base of the power transistor is controlled from the secondary winding control transformer. The primary winding of the transformer is powered from a continuous voltage source connected in series with the control transistor. The control transistor is keyed by a periodic square wave. During the conduction of the control transistor, the energy of the magnetic flux in the transformer core increases. After the control transistor is blocked, due to the need to maintain the continuity of the magnetizing current ampere turns, a current appears in the secondary winding of the transformer, closing in the base circuit of the controlled power transistor. The value of the base current is unequivocally related to the value of the current flowing in the primary winding at the moment of blocking the control transistor. As energy is transferred from the transformer to the base circuit, the energy stored in the core decreases. In the next period, the magnetic energy in the core is supplemented during the conduction of the control transistor and the power transistor base is re-controlled after the control transistor is blocked. The disadvantage of the presented solution is that the current in the secondary winding, controlling the power transistor base, strongly depends on both on the value of the voltage supplying the primary side of the transformer, as well as on the duty cycle. 8, defined as the ratio of the required conduction time of the controlled power transistor to the switching period. A partial reduction of the dependence of the control current on the basis of the duty factor 6, with a not too large value of the factor 6, for example for 5 <0.6, is obtained by using in series with the primary winding of the transformer, a suitably designed limiting resistor, blocked by a capacitor. However, this method does not make it possible to make the base current independent of the value of the supply voltage. The disadvantage of the solution used with the series resistor is the power loss in the resistor. An additional disadvantage is that the series resistor and the blocking capacitor form the integrating link * delaying the correct response of the control system with rapid changes of the factor 5 or the supply voltage, dynamic loads of the control system. The essence of the invention consists in the fact that, in series with the primary winding of the control transformer, an additional resistor controlled from the comparator output is switched on. There is a sampling resistor in the control background epiter Btfrrt of ^ aJ4. The reference voltage and the voltage from the sampling resistor are applied to the inputs of the comparator ^. Between the upper end of the primary winding of the transformer and the neutral conductor, a diode which maintains the current is switched on, there is a diode that maintains the transformer after connecting the additional transistor, 10 £ 20 25 and a blocking diode, supporting the blocking state of the additional transistor, connected between the input of the compiler and the upper end of the transformer. Additional transistor (it is saturated when the current in the primary winding is lower than the assumed maximum value and is automatically blocked when this value is reached. As a result of blocking the additional transistor, the primary winding is disconnected from the power supply) current in the winding is closed by the holding diode and flows until the control transistor is blocked. From the moment of blocking the control transistor, the control system works in the same way as in the known solution * Simultaneously with blocking the control transistor, pour The combined transistor, the additional and the circuit are prepared to replenish the energy reserve in the transistor core in the next period, when the control transistor is turned on. In the WetBut control system, the T # ySku- <& there is stabilization of the current in the winding the primary of the control transformer, regardless of the supply voltage and the factor 5. Thus, the base control current of the power transistor also does not depend on the "ib" brick and contributing factor 8. ^ ^ Jkia4 wedjnt; of the invention, the resistor WP & wadzafec & p l ^ ap ^ n ^ cjr &lt; &apos; &gt; does not require the use of a condensed condenser to block the brick, which in the known solution delays the reactions of the ua system, step changes of the factor 5 or experiencing tension. The subject of the Invention is shown in the figure ^ aa ^ where Lfig: 1: presents a simplified diagram of the system ^ jpulsoweco ^ tg- 'rowafclfi of the base Jjaflzystjpra hk ^ ^ Cif. 2 y ^ d | tawia T ^ ktypana r ^^ sje ^ wy ^ jw ^^. As shown in Fig. 1 of the additional transistor T, rfc, off. is vz plus ^ voltage ^ zgsya- jaeefco, * fts kplefokr te * itraflgyftpj &;Z; top ^ end of luwojc ^ Jpiejirotnego4ranaf <^ z Ijato- c4a ** and Wakujacej diorphs X |, oi ^ rubbing diode i vp.Aeodnta E ^^^ , K dolaStone AwteJ ^ eiiiie w 4o ifcódfe i ^ Jecja ^ .p ^ njeaje- -¦Ba,; »* Dt ^ e in the Kfcajeclaogec comparator with the emitter of the attenuating transistor T3, p ^ ntredz ^ emitter of which a ^ ewc4fim. a healthy wLiczojpr is ^ W ^ sampling sequence B ^ ExitJfep ^ p ^ t ^ a ^ K; is / joining the base of the transistor jWa ||: o ^ ej ^ T ^^^ cdu turning off this transistor -pp ^ sj ^ crumple ^ forehead The value of the rpAdu w, winding / plej ^ Oj t ^ nsf ^ rmatofra Tky The secondary winding of the TL transibrator is attached to the base and emitter of the controlled transistor Mpcy T. "..and .. Fig. 2 shows an example of a practical implementation of a control system in "it". R & e of the comparator specifies the transistor T4, the base of which is on the potential -cJdniesien)! The voltage drops on two diodes D15 D2 and the emitter of the transducer ¥ 4 \ M connected with the emitter of the control transistor t2. ? & KRtf for part of the system is the same as in the system described above *. The operation of the system shown in S 31 in-1 is nasYepuja ^ e. control frinz ^ * vj% keyed with a square wave with djtf SHfc f and with a regulated fill factor $. At a high state on the basis of T2, the current in the primary winding of the transformer increases, increasing the energy in the core. When the voltage drop on r ^^ tfctle ^ sample-ftcym fe ^ & 3ttcfy the value of the reference voltage U0 at the input of the comparator K, ftr $ n% $ tft WAl Tj is turned off. The primary winding current of the traWsfoT matrix becomes cold then ^ p & e with the support diode Dp. At the same time, the blocking diode Db will lower the voltage by about eighth, which will lead to the blocking of the system in an uninterrupted state of t * 3. At the time of switching on the control circuit T2, the voltage on the sampling resistor IU disappears, as a result of which the output state of the comparator 1 Itrai & yWr TT3 JSfeti changes. W 6tanje switching off the transistor This energy from the core is transferred to the control of IJazy TiST - the power transformer Tt. After the transistor T2 is turned on, the transistor Tj is turned off and the energy replenishment cycle begins in the core. According to the invention, the control system parameters should be so designed that at the lowest supply voltage and the highest value of the fill factor 6max over a period of time (1 - 5 m ) T rajacego zdazyl Reservation faten is in the Impulse system * controlled by the base tran ^ tórSftora power, especially for impulse voltage transformers, containing a control transformer, ^ tofego ^^ U ^ A ^. ^ Fc./ * it. * «. -. »«. * • l * .-- j »'» iAy, the secondary winding is connected between Bazia and the emi-Crad in the primary winding of the control transformer, and has reached the assumed maximum value. terem controlled power transistor, winding jq, key ^ anegb throughDiegfern .plrosto ^ fiiynt, '% 1 ^ alternate' with the fact that 'contains lelemefets ^ in ^ or ^ aclij ^ ?: additional ^ additional ^ janistoj t (T3) , resistor * pr ^ DRuf4 ^ y ^ p ^ * rator & C), zroafo 'Wpi & ia. * odKieften & l ^ u0) * 50) -i atóiic ibióku ^ ia fe »w) them & t connected with the plus n ^ iecia 2as jdiode ^ supporting v * ^ p- connected so that the emitter ar '"* with the zero wire, Teino" input ^' mp ^ r ^ rt ^) is half-yearly with the return of the voltage bniecSie% fa ftJo) ij ^ z ^ jo ^ d | <^ J (^ bV a "'Sruliie ^ ^ ijSHe fc ^ parator, (K) ^? Vmiterem' tnuiz ^ tóJt Ili ^ flWKo Hbut the emitter of the steruia transistor CTffgb CTa ui ^ DTzevQde | nz ^ TOn wl ^ feny jeSt ^ resSrJgror ^ 'CTs) w skin ^ ylCJSe of this transistor after reaching the assumed ^ w ^ fRci 65 current in the primary winding of the transistor \ JTU124 83Z Fig, 1 Fig. 2 EN

Claims (2)

1. Zastrzezenie f a t e n to w e Uklad impulsowego *sterowanfa lBazy tran^tórSfefto- ra mocy, zwlaszcza do impulsowych przetworhic na- piecia, .zawierajacy transformator sterujacy, ^tofego ^^U^A^.^fc./ *it .*«. -.»«.*• l*.--j»' »iAy uzwojenie wtórne jest wlaczone pomiedzy Bazia i emi- Crad w uzwojeniu pierwotnym transformatora ste- acego zdazyl osiagnac zalozona wartosc maKSymalna. terem sterowanego juerwotne silajaceg< tranzystora mocy, uzwoje jq, klucz^anegb przeDiegfern .plrosto^fiiynt,'%1^ mienny 'tym, ze 'zawiera lelemefety ^w^or^aclij^?: dodatkowy ^dodatkowy ^janzystoj t (T3), rezystor *pr^DRuf4^y ^p^* rator &C), zroafo 'Wpi&ia .*odKieften& l^u0)* 50 ) -i atóiic ibióku^ia fe»w) je&t polaczony z plusem n^iecia 2as jdiode^ podtrzymujaca v*^p- polaczone tak ze emiter ar '"* przewodem zerowym, Teino"wejsSe^'mp^r^rt ^) jest pólroczne ze zrócliem napiecfa bdnieSie%fa ftJo) ij^z^jo^ d|<^ JSfokuficej v (^bV a "'Sruliie^ ^ijSHe fc^paratora, (K) ^? Vmiterem 'tnuiz^tóJt Ili^flWKo Hmiedzy emiterem tranzystora steruiaCTffgb CTa ui^DTzevQde|n z^TOn wl^feny jeSt^rezystSrJgr^ z baza dodatkowego tranzystora' CTs) w cera^ylCJSe- nia tego tranzystora po osiagnieciu zalozonej^w^fRci 65 pradu w uzwojeniu pierwotnym transtarmatofa \JTU124 83Z Fig, 1 Fig. 1. Disclaimer: Impulse system * controlled by lBase trans ^ tors of power effector, especially for impulse voltage converters, containing a control transformer, ^ tofego ^^ U ^ A ^. ^ Fc./ * it. * «. -. »«. * • l * .-- j »'» iAy, the secondary winding is connected between Bazia and emi-Crad in the primary winding of the control transformer, it has managed to reach the assumed maximum value. terem controlled power transistor, winding jq, key ^ anegb throughDiegfern .plrosto ^ fiiynt, '% 1 ^ alternate' with the fact that 'contains lelemefets ^ in ^ or ^ aclij ^ ?: additional ^ additional ^ janistoj t (T3) , resistor * pr ^ DRuf4 ^ y ^ p ^ * rator & C), zroafo 'Wpi & ia. * odKieften & l ^ u0) * 50) -i atóiic ibióku ^ ia fe »w) them & t connected with the plus n ^ iecia 2as jdiode ^ supporting v * ^ p- connected so that the emitter ar '"* with the zero wire, Teino" input ^' mp ^ r ^ rt ^) is half-yearly with the return of the voltage bniecSie% fa ftJo) ij ^ z ^ jo ^ d | <^ JSfokuficej v (^ bV a "'Sruliie ^ ^ ijSHe fc ^ parator, (K) ^? Vmiterem' tnuiz ^ tóJt Ili ^ flWKo Hbut the emitter of the steruia transistor CTffgb CTa ui ^ DTzevQde | nz ^ TOn wl ^ feny iSt ^ resSrJgror ^ with base of additional transistor ^ 'CTs) in the skin of this transistor after reaching the assumed current in the primary winding of the transistor \ JTU124 83Z Fig. 1 Fig. 2 PL2 PL
PL21781179A 1979-08-15 1979-08-15 Network for pulse control of power transistor base,especially for pulse voltage converters PL124882B1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
PL21781179A PL124882B1 (en) 1979-08-15 1979-08-15 Network for pulse control of power transistor base,especially for pulse voltage converters
DE19803027754 DE3027754C2 (en) 1979-08-15 1980-07-22 Circuit arrangement for pulse control of the base of a power transistor, in particular for switching regulators

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PL21781179A PL124882B1 (en) 1979-08-15 1979-08-15 Network for pulse control of power transistor base,especially for pulse voltage converters

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PL217811A1 PL217811A1 (en) 1981-04-10
PL124882B1 true PL124882B1 (en) 1983-02-28

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR900005232B1 (en) * 1985-03-29 1990-07-21 미쓰비시 뎅기 가부시끼가이샤 Transistor driving circuitry

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PL217811A1 (en) 1981-04-10
DE3027754C2 (en) 1982-05-19
DE3027754A1 (en) 1981-02-19

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