DE1539484A1 - Device with a gas and / or vapor discharge lamp - Google Patents

Description

DipK-'lng. HOR ^ T AUER

".rieken

678 · ■

Registration dated: 25 January 1966

PH ». 678 Va / Ku

"Apparatus with a gas and / or steam ent ladungslaoipa,"

The invention relates to one of an alternating current «- source device to be fed, the connection terminals of which have a ^ Series connection of a capacitor, a gas and / or vapor discharge lamp and optionally an inductance are connected, wherein the Lamp and any inductance that may be present are bridged by a rectifier »

read this so-called voltage doubling circuit arrangement works for the ignition of gas and / or vapor discharge lamps without mechanical Counter. The capacitor charged by the rectifier occurs at the rectifier and thus also at the lamp to be ignited the double peak value of the feeding AC voltage.

BADORlGINAt

to forbid that the ignited lamp during the ν positive half-periods of the alternating supply voltage from the rectifier is short-circuited, it is common for one in the equilibrium branch Resistance is recorded with such a value that the «cm Rectifier pulsed direct current through a zero Has value.

The use of this resistor has the consequence that the capacitor with a low current increases relatively slowly. ' is loaded. Since several ignition attempts usually have to be made to reach the final operating state of the lamp, the lamp * ignites very slowly with numerous lightning phenomena »

The purpose of the invention is to provide an improvement therein create, and is characterized in that the rectifier is a controllable semiconductor rectifier is on its control electrode Part of the AC supply voltage is supplied in an activating sense, so that the rectifier can let current through, during the mentioned The control electrode is also one derived from the lamp's Sntladeetrom, after the ignition, the deactivating voltage is supplied, so that the ghost judge is blocked *

The sum of the activating voltage and the deactivating voltage Tension must not be allowed under any circumstances, not even during part of the period, be positive. However, this can only be prevented if the voltages are exactly out of phase, which is difficult to achieve. Around Difficulty avoiding is based on a special execution form after the invention, the deactivating voltage is converted into a direct voltage! whose 7 / ert is at least equal to the peak value of the activating Tension is.

In the branch of the activating voltage there is preferably a resistor which is bridged by an auxiliary capacitor is represented by the activating voltage via an auxiliary equalizer

90 98 50/045 8

BAD ORIGINAL.,

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is charged i '

The invention is shown below with reference to the drawing

n * h »ji» rl | utert, in which an exemplary embodiment is shown. J /, '' In the figure, 1 and 2 designate the connection terminals of the

yojrrjü ^ tung. These terminals are connected in series to a -44 * fa ^ ejtflfftftti 3, a gas and / or vapor discharge lamp 4 and one Inductance 5-connected. The slabs 4 and 5 are bridged by a same-key 6. The capacitor 3 and the inductor 5 form «Ine capacitive Vbrsohaltiapedan» the Laape 4, which is provided with glow electrodes 7 and 8 in the example shown, which are connected to the Secondary windings 9 and 10 of a glow current transformer 11 are connected. ·

When the device is connected to a suitable AC voltage source, the capacitor 3 is charged almost instantaneously to the peak value of the AC voltage via the rectifier 6, whereby it is assumed that the rectifier 6 has an ideal Gleiohriohtkennlinie. This DC voltage and the AC voltage of the supply source. The sum of these voltages varies periodically between zero and the double i

peak voltage value, the latter value being the sinning of the lamp enough. *

Va on the one hand a reliable and fast ignition to βrsielan and on the other hand to make the rectifier ineffective during the normal burning of the lamp, the rectifier 6 is a thyristor whose control electrode 12 via a rectifier 13 and a resistor 14 with part of the supply voltage source, 2.3. Bit of a tap 15 ■ on the transformer 11 is connected.

The rectifier 13 has to prevent the 3weok that the Control electrode 12 negative compared to that connected to terminal 2

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Cathode of the thyristor can be.

BAOORiGINAt V

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• in · β pi $ d * tB flf ighi-iohtfr iz | Ranks § ^ P8 & || ft1i * a "9tt !!!! teH9 • tandep durohgffilhrt, since the thyrietor from the conductive tpn very open Re-charged condensers 3 are much faster to use Enfr ^ ies ^ gat · ready i »t.

After the lamp has been ignited, the discharge tube flows through the bishtr atrpmloee inductivity 5, "o da * · ep is possible ^ ψοη dieaeni Entladeetrom, e, B. traneforoatorieoh, pin "Spannui ^ ft" btul * it * n _f the "positive" influence resulting from the tap I5 Control electrode 12 destroys.

The »β 3pannuag can be directly out of phase with the voltage • n the connection I5 of the control electrode t2 of the thyristor «6 Buetffihrt will. Debei it is important to daps dip ·· activating and pnt »ktivi« «» a4en Alternating tensions during operation of the Laepe 4 still ββ§1lohet exactly are out of phase with each other (for what purpose a phase correcting pa Ne ta werk can be used), since it is undesirable that the Susase of these frames during part of the period po becomes positive that Difficulties in switching off the dpa thyristor are to be feared.

To prevent this, a preferred solution is the inactivating tension is transformed into an equal tension Value is at least equal to the peak value of the activating AC voltage. - ■■ '■'. ■ ■

In the example shown, this conversion is carried out by that the inductance 5 is provided with an auxiliary winding 16 and the in AC voltage generated by this winding via a Qleiohriohtex 17 for charging a capacitor 18 ". vpxwende-t ürird. This capacitor 18 is connected to resistor 14 in such a way that the positive

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1539A84 ■ - ■ -

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Terminal, the capacitor 18 is directly connected to the tap 15 . ■ '■ ■;'""''■;.'..''■'

In one specific case, the supply source was an “alternating voltage source of 220 V, 50 Ha, and the Lanpe a low pressure mercury vapor discharge lamp with an operating voltage of 160 '.V at ", ■

a discharge atrom of 1.5 A | the via de r inductance 5 »inen Spannuntjeabfall of 160 V brought about. The glow electrodes 7 and "8"'"''" were fed with 3.6 V at 1.4 A. Her capacitor 3 had a capacity of 12.5 / ^ P. The auxiliary winding 16 on the inductor 5 provided g

an iVec voltage of 10 V, of which the (slectrolyte) capacitor 18 from.-fOu Mf via the rectifier 17 to 14 V DC voltage.

/ ■

has been loaded. The opposite of the Anechlu33klt2rame 2 an effective Alternating voltage of 8 V supplying tap 45 to »GlQhstroatransformator 11 was about the resistance 14 out of 1000 and the Sohuta co-ruler 13 -tn.it of the control electrode 12 dee 'Thyrie tors 6 vex-bound.

To ignite the Laepe a maximum of the double peak value the supply voltage, i.e. 620 V, available »

9 0 9850/0451 BAOOA

Claims (3)

- $ - HOL '67 * Eatestanspsübchb » 1. J device to be fed by an alternating current source, their connection terminals via the housing of a capacitor, an OAS and / or vapor discharge lamp and optionally an inductance are connected, the lamp and the optionally existing inductance is bridged by a rectifier, characterized in that the rectifier is a controllable semiconductor rectifier, the control electrode of which is part of the Feed alternating voltage is supplied in an activating sense, so that the rectifier can pass current, while the mentioned control electrode is also derived from the discharge current of the lamp the ignition occurring deactivating voltage is supplied, so that the rectifier is blocked. ' 2. - Device according to claim 1, characterized in that the deactivating voltage is converted into a direct voltage, whose value is at least equal to the peak value of the activating voltage is. 3. 3 device according to claim 2, characterized in that there is a resistor in the branch of the activating voltage, which is bridged by an auxiliary capacitor, which is charged by the deactivating voltage via an auxiliary rectifier. 90 9 8 50/0451 BATH