Energy saving lamp repair. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Energy saving lamp repair. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Lighting

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Fluorescent energy-saving lamps have recently become more and more popular, despite their rather high cost. And indeed, these light sources are good for everyone, except for one absurdity that spoils their reputation. The lamps adapted for the standard E27 electric cartridge (photo 1) have a central contact pad that is too large (in diameter), and when they are screwed into the cartridge, it is not uncommon for the platform to close both contacts in it.

The consequence of this is an electric arc and burnout of the contact pad in the base of the energy-saving lamp, and even the cartridge itself. Moreover, if automatic switches of 25 A (and more current) are installed in the house in phase and neutral wire, they do not have time to work - the lamp becomes unsuitable for further use. You can try to return the burned-out lamp back to the store or exchange it for a serviceable one - after all, in fact, the lamp manufacturer is more to blame than the cartridge manufacturer, especially considering that the latter previously worked perfectly with conventional electric incandescent lamps. If you get a refusal, and it’s expensive to buy a new lamp, and it’s risky (what if it burns out again!), Then you can restore the operation of an energy-saving damaged lamp.

This is done so.

The burnt-out lamp base is carefully removed, and then the master’s eyes appear on the electronic voltage converter board, connected with two conductors to the base contacts, and with four contacts going into the glass tube (having a straight or spiral shape) of a fluorescent lamp.

As a rule, an electric arc caused by a short circuit in the socket (base), due to the wide area of the energy-saving lamp, does not damage the electronics of the converter, so the lamp can be easily restored by soldering new connecting conductors to the contact pads on the board and connecting it to a 220 V network, for example , using a cord with a standard plug.

If the electronic board of the voltage converter is also damaged. it is removed along with the faulty elements and a new voltage converter is made. A simple electrical circuit of such a converter is shown in Figure 1.

Energy saving lamp repair
Rice. 1. The electrical circuit of the voltage converter for a fluorescent lamp with a power of up to 8 W

Energy saving lamp repair
Photo 1. Energy saving lamp EL-3U

Four terminals of a fluorescent lamp (two on each side of the tube) are connected as shown in the diagram. After such a simple refinement, the lamp will serve for a long time.

Refinement (restoration) of an energy-saving lamp (of the type shown in photo 1) using the circuit (in Figure 1) can only be carried out if the power consumption of the energy-saving lamp does not exceed 8 W (there is a record on the base of each fluorescent lamp about this), which corresponds approximately to the intensity of light from a 60 W incandescent lamp.

In the same way, you can "revive" 4-pin miniature fluorescent lamps installed in lamps and nightlights (photo 2, fig. 2).

One day, in the process of working on a burnt-out lamp, another interesting detail was revealed by experiment. When you touch the glass of a fluorescent lamp connected to the network 220 with your fingers. the human hand (through the glass of the flask) is a source of a small alternating voltage induced in the human body.

Energy saving lamp repair
Photo 2. Lamps from fixtures and their power board

Energy saving lamp repair
Fig. 2

If you go further and act at a distance of 5 - 10 cm from the lamp bulb, switched on for transmission by a portable radio station (the frequency of the radio signal transmission does not matter, the transmission power is 5 W), the lamp will light up as brightly as if it were included in the 220 V network.

Thus, an idle energy-saving lamp (provided it is connected to a 220 V lighting network) can be "revive" and lit in the most unusual way. This allows you to apply this technique even for tricks demonstrated to the uninitiated, based meanwhile on ordinary physical phenomena.

Author: A.Kashkarov

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