Both burned out and short-circuited fluorescent lamps shine. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
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Both burned out and short-circuited fluorescent lamps shine. Encyclopedia of radio electronics and electrical engineering

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Encyclopedia of radio electronics and electrical engineering / Lighting

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Interest in the search for original technical solutions that make it possible to light even burnt out fluorescent lamps does not weaken at the present time. And this sometimes gives truly amazing results.

In particular, the method of using fluorescent lamps (LDS) that do not have a single intact filament is becoming more widespread. To implement it, you just need to assemble a simple electrical circuit (see Fig.) And fulfill the most elementary condition: so that at least a piece of a burnt thread is held on some electrode inside the bulb.

Both burned out and short-circuited fluorescent lamps shine
With this inclusion, almost any LDS will work.

The circuit employs a choke designed for the corresponding lamp power, a button with a quick reset and a capacitor, the capacitance of which can vary over a fairly wide range. The optimal value of the latter, determined by the selection method for a 40 W LDS, is about 4 μF. The luminescent lamp lights up when the power button is pressed briefly.

The above scheme is used by many to extend the life of new lamps. Those who have both filaments working. And they can't burn out. After all, the ends of each of the threads are short-circuited, as they say, tightly - why quickly deteriorate there ?!

Author: G.Makarychev

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