In the winter the humidity in the apartments is usually kept at 40%, whereas normal humidity should not be less than 60%. The reason is, the cold air coming from outside and having a normal relative humidity, in a well-heated room becomes excessively dry because relative humidity depends on the temperature. At this time of year is best to install in the apartment with a humidifier. You can do it from scrap materials.
Cut from tin cans two electrodes approximately 100x30 mm. Route between two narrow transverse strip of rubber. The gap between the electrodes should be about 7-8 mm. Then tape the electrodes in the ground gaskets rubber rings or with several strands of thick cotton or linen thread.
To the plates solder the electrical wires as shown in the figure. Twist the wire and make them fork. All connections should be carefully soldered and wire with good insulation. Place the device on the bottom of the glass or ceramic ware with a wide throat. (Warning: metal pots can not be used!) Fill the dishes with tap water almost up to the top and turn on the device and the network. Contained in regular drinking water mineral salts enough through the gap between the electrodes went the current and the water is heated and boiled. Pair it will significantly increase the humidity in the room. From time to time add water. If you forget to add water and it boiled out, nothing bad will happen - the electrodes will become bare, electric the chain will open, and the device will cease to operate.