SU1330766A1 - Lighting device with a luminescent lamp - Google Patents

Abstract

The invention relates to electrical engineering and m. used in installations with fluorescent lamps with heated electrodes. The chain of the invention is an increase in reliability. The device contains a fluorescent lamp, I, choke 2, filament transformer 3, AC switch 5, control unit 6, time relay 8 with contacts 7, 9 and II. The current of the subcap of the lamp 1 is set depending on the angle of unlocking the key 5. With full blocking, the current of the sub-peak is maximum, with full unlocking it is equal to zero, i.e. with an increase in the operating current of the lamp, the current of the temper decreases also vice versa, which ensures optimal operation of the lamp 1. 1 Il. with f o c

Description

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The invention relates to electrical engineering and can be used in installations with LEOMESTIC lamps with heating electrodes.

The aim of the invention is to increase reliability.

The drawing shows the electrical circuit of the device.

The device contains a fluorescent lamp 1 connected to an AC power source. Throttle 2 and filament transformer 3 are connected in series with fluorescent lamp I. Primary winding 4 of filament transformer 3: is bridged with an alternating current key 5, the control output of which is connected to a phase control unit 6 connected to an alternating current source. In parallel with the primary winding 4, the disconnecting contact 7 of the time relay 8 connected to the AC source is connected.

One electrode of the lamp I through the closing group of the first switching contact 9 of the time relay 8 is connected to the first secondary winding 10 of the incandescent transformer 3, the second electrode of the lamp 1 through the closing group of the second switching contact 1I of the time relay 8 is connected to the second secondary winding 12 of the transformer 3 of the transformer 3.

Lighting device with a fluorescent lamp works as follows.

When the supply voltage is applied, a time relay 8 is triggered, which contacts 7 to shunt the primary winding 4 of the incandescent transformer 3, and through contacts 9 and I1 it connects the filaments of lamp electrodes of lamp 1 through an inductor 2 to an alternating current source. The filament of the filament of lamp I is heated. After a delay of 1.5–2 seconds, the relay switches contacts 9 and 11, as a result of which the filaments of the filament turn out to be connected to the secondary windings 10 and 12 of the anchor transformer 3, and the lamp 1 is depleted. sunbathes. Subsequent

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after 0.5-1 seconds, opening the contact 7 puts the AC switch 5 into operation, which, in accordance with the installation of the control unit 6, allows current to pass through the lamp 1, and there is no dead time in this case, because the switch 5 is shunted by the primary winding 4 filament transformer 3.

The current of the sub-head of the lamp 1 is set depending on the angle of unlocking the AC key 5. When the key 5 is completely locked, the current of the lamp 1 is maximum, and when the key 5 is fully unlocked, it is equal to zero. Thus, with an increase in the operating current of the lamp, the undercurrent current decreases and vice versa, ensuring an optimal operating mode of the fluorescent lamp.

Claims (1)

Invention Formula A luminescent lamp lighting device containing a choke connected in series with the lamp, a filament transformer, the secondary windings of which are connected to the corresponding threads of the channel of the lamp electrodes, the primary winding is connected to one of the leads to the power supply and the other to one of the electrodes of the lamp, an alternating current switch, a control input connected to the phase control unit, is only due to the fact that, in order to increase reliability, a time relay with a closing and two switching contacts, the other electrode of the lamp is connected to another output of the mains supply, the secondary windings of the filament transformer are connected to the filaments of the lamp electrodes through the corresponding disconnecting groups of switching contacts of the time relay, the closing contacts of which are interconnected, and the closing contact the time switch and the AC switch are connected in parallel with the primary winding, the filament transformer.