SU1686714A1 - Device for switching-on gaseous-discharge flash lamp - Google Patents

Abstract

The invention relates to electrical engineering, in particular, to devices for powering pulsed gas discharge lamps. The purpose of the invention is to simplify installation while improving the lamp ignition efficiency. Inside the coil of the ballast throttle 2, a frame 3 is inserted with the windings of a pulse transformer 5. The frame 3 is fixed inside the frame 1. 2 Il.

Description

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The invention relates to electrical engineering, in particular, to devices for feeding pulsed gas discharge lamps with a tubular bulb.

The aim of the invention is to simplify installation while improving the lamp ignition efficiency,

Figure 1 presents unassembled one version of the design; figure 2 - the second option.

The device for powering the tubular pulsed gas-discharge lamp consists of a coil frame 1, droplets 2, and a second frame 3 with windings of a pulse ignition transformer 4. The frame 1 of the coil is made of a dielectric material, the winding of the inductance of the throttle 2 is wound on it, for example, a copper wire with enamel insulation. The electrical terminals of the ends of this winding can be carried out either through the holes in the coil side cheeks (not shown), or the ends of the winding wire can be fixed to the coil by means of an applied bandage.

A pulsed ignition transformer having a dielectric frame 3, in which the windings of transformer 4 are wound, is introduced into the direction of arrow 5 inside the ballast throttle 2 coil. The ends of the windings are led through holes in the frame side cheeks (not shown).

The transformer windings can be wound on the frame 3 with either layers with interlayer insulation or sections. The frame 3 is fixed inside the frame 1 of the throttles 2 by means of an adhesive substance applied to the contacting surfaces of the frames 1 and 3.

In the embodiment shown in Fig. 2, the extreme cheeks of the frame 3 have holes 6 for outputting the ends of the windings. The frame 1 of the throttle coil 2 is made of a dielectric material and has a separate section for laying the windings of the ballast throttle 2.

The windings of the ignition transformer 4 are laid in a large section of the frame and

The winding leads can be made through the hole 6 in the side cheek of the frame. Winding ballast throttle 2 is placed in a smaller section of the frame, and its conclusions

either through the hole in the side cheek of the frame, or one of the leads is secured by the applied bandage,

The device works as follows.

At the moment when the current pulse through the primary winding passes through the choke 2, a voltage pulse is induced, which is summed with the voltage on the storage capacitor

the discharge circuit (the polarity of the first half-wave of the pulse must correspond to the polarity of the lamp), a pulse from the high voltage winding of the pulse transformer 4 is simultaneously applied to the external ignition electrode of the lamp, and thus the reliability of ignition of the lamp is significantly increased (i.e. the probability of gaps decreases outbreaks).

After the lamp is ignited from the capacitor, a pulse of discharge current flows through the lamp and the choke 2, which is limited by the peak value of the lamp's active resistance and ballast reactance

Drossel, reducing the peak value of the current through the lamp by a few tens of percent.

35

Claims (1)

Invention Formula A device for switching on a tubular gas-discharge flash lamp, comprising a ballast choke and a pulse ignition transformer, the secondary winding of which is intended to be connected to the lamp ignition electrode; Of course, in order to simplify installation while increasing the lamp ignition efficiency and increasing its service life, the transformer is installed coaxially inside the coil of the ballast throttle and is rigidly connected to it. FIG. I