Observance of measures of fire safety is necessary for everyone, always and everywhere: at work, at home. And if the companies behind this control is performed by fire supervision bodies, in houses — all this, entirely, entrusted to the tenants.CONVENIENT AND ON THE CEILING
Observance of measures of fire safety is necessary for everyone, always and everywhere: at work, at home. And if the companies behind this control is performed by fire supervision bodies, in houses — all this, entirely, entrusted to the tenants.
In our days the number of cell phones in the country has already caught up with its population. This means that each family now for three or four cell phone. Respectively, the same and chargers — because every manufacturer equips your phone only for it intended charger. Well, each charger requires a power outlet — preferably in a place where you can gently place the phone. Oddly enough, but in an ordinary apartment, these places are not so much.
Recently, widespread quartz alarm clock made in China, characterized by a relatively high ring volume and cheapness. If the watch is out of order, but the alarm clock still works, it can be used in a variety of makeshift structures. For example, the proposed indicator of a bite.
In the construction of houses large rooms usually equipped with a harness that allows you to turn the lamps (for example, shesterikova) in series two, four and six lamps. At the same time in smaller rooms (bedrooms, children’s) posting are only designed to turn all lamps chandeliers. However, in such rooms sometimes want to include only part of the lamps of them.
Protection of your house and garden from small rodents, insects relevant today. Various industrial devices “repellents” are on sale, but this same device is able to produce hams with a medium level of training. Unlike many schemes of such devices listed below are quite original. Known schemes are based on the ultrasonic frequency generator (uzch), “loaded” to the piezoelectric capsule. The frequency of these generators can be tailored (adjusted by changing the values of the RC circuit), but it is invariant under the operation of the device, and therefore of the generator. That is, any rodents, insects, birds or animals would not be “programmed” generator uzch (all of these entities are afraid of the discomfort of pulses of a certain frequency), over time, the device ceases to be effective due to rodents or insects exposure.
In the Food program of the USSR much attention is paid to food production in farmlands and suburban areas. A contribution to this important cause made the young Amateurs of RCUT of the Kazakh SSR. They prepared and tested a number of automatic devices that will help to grow agricultural products. The developers sought to create devices that are available for repetition at home. Oki have sufficient accuracy (±5-10%).
The water treated by an electric current, acquires new properties: some of it manifests itself as a weak alkali solution and the other acid. When activated in this way the water felt on animals and plants, it was found that the liquid with alkaline properties were the stimulator, and one that bears signs of acid inhibits the growth of microorganisms and cells of living tissue.
Records of poultry ka large poultry farms and in the farms is no easy task, without automation is not enough. This operation can be performed using the microcalculator B3-23. It is necessary only to add the connector through which the electronic device is connected to the sensor (see Fig.) — associated with a movable strip contact pair S1 (see diagram). 
You obviously had to read about the models driven by sound signals. Receptor, which we offer to the reader reacts to an audio signal of a certain strength. The source may be, for example, a whistle, a whistle or sound a special transmitter commands. Equipped with this instrument model is performing in any sequence the commands: “forward”, “back”, “left”, “right”. The cessation of the audio signal or decrease it to a certain level is causing the stop model (stop). Here’s how the device works.
The magazine “Amaterske Radio” (Czechoslovakia) proposed scheme is a simple audio probe to detect logic levels; low (logic 0) and high (logical 1). The device consists of a bitonal multivibrator, is made of two elements of D1.1, D1.2 chip D1, and two keys, collected three transistors V2—V4 (see circuit diagram).