Again about durable lamps. Scheme, description

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ENCYCLOPEDIA OF RADIO ELECTRONICS AND ELECTRICAL ENGINEERING
Free library / Schemes of radio-electronic and electrical devices

Again about durable lamps. Encyclopedia of radio electronics and electrical engineering

Free technical library

Encyclopedia of radio electronics and electrical engineering / Lighting

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Sometimes you get acquainted with publications about extending the life of incandescent lamps and you think: “Isn’t it cheaper to buy new ones instead of a burned-out one than to make intricate designs and even pay for the electricity spent on powering the additional resistances installed in them? And is the current surge so great? when you turn on, say, a low-power light bulb, for example, less than 40 W, in order to switch it to the “underdone” mode of operation?

Or take "Economical" circuits with thyristor ballasts. After all, they also have heating losses. In addition, these advertised devices often interfere with radio reception, require tuning, and are (I'm sure) unstable.

The technical solution proposed by me does not have the above disadvantages. In addition, it provides a smoother ignition of the light bulb. And the scheme (see figure) - you can’t imagine it easier.

More about durable lamps

By selecting the appropriate capacitances and diodes, you can connect a light bulb of almost any power and any voltage here without a step-down transformer. For example, for a 220 V network and a 60-watt lamp with the same semiconductor valves, capacitors are needed, respectively, 5 microfarads each.

Author: V.Kruzhkov, Orel

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Modern touch screens have an indium tin oxide (ITO) film that registers pressure. This material is used for the reason that it has high transparency and conductivity. Manufacturers should master new materials on an industrial scale in the coming years, taking into account the growth rate of production of touch devices, emphasizes GigaOM.

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