SU48826A1 - Apparatus for sequential ignition of several gas lamps - Google Patents

Description

The invention relates to a device for sequential ignition, as the alternating voltage increases, several separate or combined in one common flask of gas luminaires.

 According to the invention, the electrodes of the lamps connected in parallel to the source of the varying voltage are connected to each other through resistances connected in series to the circuit of the auxiliary source of the constant voltage.

FIG. 1 and 2 of the accompanying drawing are diagrams for switching on several individual gas-lighted lamps; in fig. 3 and 4 — appropriate lamp switching schemes, combined into a common flask; in fig. 5, the individual electrodes are replaced by resistors; in fig. 6, a device for cycling the voltage applied to the lamps is explained.

In the device of FIG. 1, the electrodes 5 of several gas-light lamps are interconnected through resistors 6 and a constant voltage source is connected to the terminals 7, 2. The potentials on the electrodes 5 differ from each other by the magnitude of the voltage drop in the resistances 6. If the voltage applied to terminals 3, 4 is increased,

any law, the lamps thus turned on will light up one after the other as the voltage across the electrodes 5 and 7 reaches the ignition potential. By the time the last lamp comes on, the greatest current will flow through the first resistances, so they must be calculated accordingly.

The brightness of the lamps will also gradually decrease. If it is necessary to obtain the same brightness of all the tubes or, equivalently, the same amperage in all the lamps, the switching can be carried out as shown in FIG. 2, where between the electrodes 7 are included the same in magnitude of the resistance as the resistance 6, but in the reverse order, i.e. between the first lamps, counting from clips 3, 4, the highest resistance is switched on, and between the latter is the smallest. For symmetry, the clamp 4 can be transferred to the electrode 7 of the last lamp.

Instead of individual lamps, one tube with several electrodes 5 inserted into it (Fig. 3) can be placed. Circuits for switching on such a tube, similar to FIG. 1 and 2 are shown in FIG. 3 and 4.

If you want to get a smooth spread of the glow along the length of the tube

The latter should be performed according to FIG. 5. In it, the resistances b and 5 are inside the tube and serve simultaneously to the electrodes, and. In this case, one can obtain either a pattern of successively decreasing luminance, or by switching the ends 7, 2, the same luminance along the entire length of the tube.

Such tubes or combinations of them: with success, they can be applied in advertising devices to create a gradually igniting pattern. In this case, a voltage is applied to the terminals 5, 4, for example, from a potentiometer, the slider of which is moved by a motor or by some other known method.

{fig. 6).

The advantage of the proposed device is the lower voltage required for ignition than in tubes that are commonly used for this purpose with inlets at the ends, since the distance between the electrodes is many times smaller here.

LG Subject of the invention.

F / AvVi. - g

S-1. Apparatus for sequential ignition of several gas-lighted lamps in time, characterized by

The electrodes of the lamps, connected in parallel to the source with varying voltage, are connected to each other through resistances connected in series to the circuit of the DC source.

2. The form of the device according to claim 1, characterized in that, in order to obtain the same brightness of the lamps, resistances equal to the resistances between the first electrodes of the lamps are also included between the other electrodes of the lamps.

3. When the device according to paragraphs. 1 and 2, the use of a lamp with several discharge gaps placed in one common flask.

4. A device change according to claim 1, characterized in that, in order to obtain a smooth change in the luminosity of the luminescent lamp, the electrodes of the lamp are connected to a source with varying voltage, the ends of one of which are connected to a source of direct current.