DEP0050873DA - Circuit for generating a high DC voltage from a low DC voltage. - Google Patents

Description

ρ 50 875 TOM / 21d * S Seine AJctei EI / JV 5772

PH - 10271

"1 .T. Philips ⁹ Gloeilaffipenfafcrieken, Sindhoven / Hol'land

Circuit aar Eraaugang a high DC voltage h & s one low residual stress ♦

For Ti el © 2seok © it is ertsilnaeiit that a source hoh "r Gleiehepannurig eteht sur available, which is charged by only a small Strosa" Mm is especially true feel dor Speieung tone cathode ray tubes for example Fernsearöhren to, "where anodes spassuLHgen by some 2ehn Kilovolt has been used, while the Etroaabnahm © only has the size of 100Amp.

In addition, the voltage impulses can be used in addition to high oil breakdowns, which arise at a normal self-induction coil to which a Kiepasitiit is parallelgcscheltet when a current is periodically reacted and interrupted in its circuit. A high DC voltage then arises from the oil-drilling of these voltage pulses.

The bobbin in question can also be used with this. has been included in the discharge circuit of a discharge tube which is periodically blocked.

This blocking can either take place with the help of an individually observed voltage which is applied to the control grid of the discharge tube , or it can also be brought about by the discharge tube being placed in a generator holder, in which periodically blocking voltages are drawn on the control grid of the tube of the β

The invention relates to a circuit of the last-mentioned type, which contains a capacitor connected between the damper grille and the second line of the hearing system, which periodically overruns

else Impedaas charged and then over the EeikeMefesltaBf eis Oleiohriohters old an inductive sit dta AuegangekreIo the self-inductance coil coupled to the charge tube is discharged, the coupling is designed in such a way that the Gloichrichtsr locked while the capacitor is charging «iri»

At * iner iierartigsis. Iaelsanriteii circuit sur erseugung von Helaxaticnscchwlneuniiea can the OleIcriG voltage by rectification dor S paroiun ^ a iispul s a erssiolt, the friction induction coupled with a parallel

m. dietior g $ selislt © fer * lia; pe.sity arise »

Sb seigt ßioh but at such a circuit that changes the Siek erssielte DC voltage infolg © of at.mden aufti-in of the inner Sohalttmg tflderstandea with dor load.

Such a helastunga & bhöngige Sie iahepnnung is desirable for vial © ftr / ocJce » IriSbeeondar © in the feeding of Ferneehrbhren. You erfiaiangege®! © ⁸ trained circuit be-Weokt _i to avoid this © Sacateile j by reducing the mentioned ineere ί level.

According to the invention, the Berlaaal Btxf _f that the control grid and the Iiapeeians a Zondenoator is connected by a Wiuerstend lg bridged and the star grid is connected via a Widorsteaid S _1, depending on the load of the oil voltage source, ale also with negative polarity A f OBte positive gate pairing is supplied via a resistor, and the specified% ideretaneae and condensers are selected so that

^ Λ ^ - smaller al, ^iet '

The BriiMung door & on the basis of the Aucführungsbe ie pie is illustrated in the drawing is explained in more detail.

Me;? Ig.l seigrt scheraatisoh a well-known circuit to the Urse «. * Gu.Bg of relaxation oscillations and

Fig * Z echematiscfc a » Ameftbraagiform der circuit; geoiägs © the Srfiadamg #

In the circuit according to Ilg _e I, there is the stemergtttertoels of an intlaiasgsritoe 1 e »KoMeiieator C ₁ , &« ■ via a resistor E aas bucket Bleht shown ©! © icJaspfiniittiage »quell © come to be charged ».

Uw Auegangekxele animal lillire 1 eathHlt the al © PrlEiLrwieklung a Traneforaatore 3 "uegefelldete coil 2 * Me Setafiälr" * lefelttO £ 4 dea ^ raneformatore eiaereiits is connected to the control "lattice of Söhre 1 and andererselto with the anode Oer Mod" 5, fuller The cathode is connected to the toa the control grid of the RBhre facing away from occupancy dee zondeneatore C ₁ .

Initially the Söhre 1 is not traversed by Ctroai which Xondeneetor C _i tibet resistance £ de lakes Stärk® is eo charged, so there © Poteatial jerks s "control grid of the reconciled" one begins m flleseen uni ei "current in the Söhre close m linear «uniiaifit · As a result, there is an approximately constant voltage drop across the voltage 2 of the transformer 3.

Also ss ^ sr iekrodäreietela ^ 4 a constant voltage arises Boloher ^ olarltEt _t because the period 5 remains non-conductive.

Has the Spaxmtmg to the Kondeixeator CJ ₁ such Bugenommen, they daee the m winding exceeds 4 occurring voltage eo can, the Steuergitterepannung not continue to grow, because the diode is rendered conductive, whereby the capacitor C is discharged. ₁ Id · Mhre 1 becomes non-conductive and coil 2 begins to oscillate in the parallel window and wiring space. As a result of the voltage occurring at the winding 4 , the capacitor O _{1 is} rapidly reversed via the diode 5, so that the gate grid potential of the tunnel 1 becomes negative. Thereupon the lattice separation rivets again slowly as a result of the UaXadmmg of the Eondeeator C ₁ over the forest edge S and the cycle repeats itself.

In addition to the cathode line of the tube 1, there is a battery 6, which is used for correct adjustment of the tube.

Me AsfXltuäe of a »is en capacitor sawtooth voltage occurring j ^ eetaäielg large chosen over the range Gltterst your d" p tube 1 \ diu mid "OittorepexmuBg küsift below the Gitterepexrsps ^ oag. Iafolsedfceeen stent IiiBTtiaiiend time bus MseoIiwiBfen of Gpale 2 in Aaegangslsreie der Jtühre 1 aar available.

Given the words of the Viderötan & es S and the JiapaeitsVfc of the capacitor ore ^ i e the slope of the edges of the sawtooth voltage is feet.

In this way, in a certain tube and a certain transformer, there is the voltage in the winding 4 and consequently the voltage at which the diode 5 becomes conductive. The conduction of the diode 5 takes place at certain values of the steering voltage and the anode tetroae of the hearing

In every period the same mence energy is generated in coil 4 . Lur the frequency duroh di "aaigsgebe ^ nm circuit elements is not yet determined," she eil bela- StegsafeMagig let. Se belongs näxalioh m a Beettnateii B © - lastaag FEV) 4pale 2 aneuechlieseenden oils instructive maybe circuit, ie below a certain damping during de "occurrence of the first Spitxen the Sigensehwingung to the coil 2 of a certain SSgegafenasplitude ANS * because the upper level dieeer amplitude £ enter 1st. a certain frequency. With increasing load, the saw tooth plitude decreases, and accordingly the prequena grows and, as a result, the performed power. It is but the ersiehte 01 ^ i «hspanmumg efenebmeti, from which it follows that in Sleiehriöhtuiig the tension occurring at the coil 2 nungeimpulse one iTieiehegsnnangsquelle with a certain inner Wideretand arises.

Ee can sua. sua? Reduction of the internal resistance to the load- dependent cone spiming .

In the case of a tehaltusg fiw in fig. 1 terret til tea type , however, one encounters difficulties when using such a protective voltage.

SnmdsEt »llcli 1st eg possible, the accompanying event of the Catho ! ei tion of the period 5 »u take * & this sweck vman ii # © 0 voltage but then as SpaniiungBefe; gm. fiderstaad are generated , whereas p: stand «

on. have a low level of concern

If , on the other hand, the sawtooth voltage in the control gate valve were to be fed to a capacitor of the control grid and this grid would be applied via a high resistance to one of the cone voltage levels l »eeia £ li « 8t © n , there is no at & bile Sotoiagaag e% liek »

In the case of the SehaltaAg shown in 71g, 2 according to the invention , it is possible to influence the mean control grid voltage by maintaining stable oscillations by (control voltage m .

In Fig. 1, the scarf tang bit is provided with the borrowing references in Fig. 1.

The primary winding Z of the Traneforaators 3 let in this circuit on the Yerbindoageetelle ssdt of the anode of the tube 1 addition

development occurs * without the anode voltage of the tube 1 inadmissibly hooh trird *

The voltage pulses occurring at the coil 2 are rectified in a known manner by means of a voltage multiplication system 10 and the DC voltage can be taken from the Eleasae 11 *

The secondary winding 7 of the Sreaeforaatora 3 is connected to a diode 8 with the diode 5 to form a single tube let, one on the capacitor S. occurring cone voltage taken from *

The direction of the winding 7 is expediently chosen in such a way that the first negative voltage peak, which arises when the coil Z is Aaeselwingtn, is rectified, since this peak value changes more than the first positive voltage peak bit of the load on the sleioh voltage source.

Between the steamer grid aiii iEftthodexasitu ^ g «- *** again d © r £ ondeneator O ₁ , but between the control gate? and the reflection staad Ii iet a bridged by a capacitor Wideratsaid * 0 connected j.

° 2

As a result, only © in part, nSs & ieh ——— * - der

C ₁ + C ₂

The sawtooth voltage occurring in Fonkt 1 «» is fed to the control grid of the tube 1.

The measurement is taken from the probe 9 and fed to the control unit with negative polarity via a resistor I ₁ .

In order to achieve the desired gate voltage of the control grid sa , the control unit is given a positive voltage U across the resistor.

If V _{1 represents} the voltage that occurs at point 12 , V _{2 represents} ^the voltage voltage applied to the resistor R ^ , the mean fire generator voltage is the same

T _x B ₁ Rg + V ₂ E ₂ E ₃ ♦ Y ₃ H ₁ R ₂ H ₁ Hg 4 » fig R ₅ + Ä.j B ₁

JThe changes in the control voltage V _{2 are} at most in proportion

S ₂

R ₁ Sg Φ Aeg Rij + ■ R ₁

to the Stemeiigitt "? *

In order to achieve stable vibrations, xsu.es the Betingusg met «earth _f daes

C-

% * ^B 5

C ₁ + C ₂ \ R ₁ R ₂ + R ₂ + R ₅ R ₁

The frequency is also the size of the resistance R, the capacitance is C ₂

«Ad the service cited to the Resistance tea-

C ₁ ^ c ₂

et iaat. Patent claims

Claims (1)

Claim: Sobeltaiig Bmr lrseagaiag ei & er Iaoli © ». Q-IelohBpmnimg am a low C-Ieichepannuiig by means of "iaer circuit skr Erssougung von Itelaixat ioasschwimmern" the © Ine "" ieohö "4" s St your grid mä the Iathoi ^ mlisifeaig a SntladttagsrShr · & is given over the condensate impulse eafg © « and then discharging via the S®ih®n, @« la connection of a rectifier with a self-inducing action coil inductively coupled to the anode circuit of the discharge tube, the coupling being designed in such a way that the rectifier dee Kondenejtora during the charging let blocked and wherein the DC gpajfflumg by rectification of the 8par.nungeiEpulse is achieved that in a coupled to the coil with parallel Auegangskreie Selbetinduktlone su their geeahalteter Xapasitftt arise gekennzelohnet datureh that as periodlsoÄ the charged capacitor Heihenechaltung ewei of capacitors (C ₁ and C ₂ ) is used, one of which (C) is bridged by a resistor (E ₂₎ that the control grid is also at the connection point of the two capacitors, and that the control grid is connected via a second resistor (R ₁ ) tin® tea of the BölasiöÄg dependent BtgelspaBauag with negative polarity, as well as via a third Ifideretand (Ity) a fixed positive bias voltage is supplied, wherein said resistors and capacitors are chosen so that _jr Co R «i» Be - less than - - . is. O ₁ + C ₂ R ₁ E ₂ + R ₂ Hr ₅ + R ₅ H ₁