Everyone, at least a little connected with electrical engineering (and this is a household, garage, car) has to deal with electrical wiring, a wide variety of cables and wires. We often use all kinds of extension cords, portable sockets.

How to determine whether we use cable or wire cross-sections? "Old electricians" determine the cross-section of the wire "by eye". And we will try to calculate its cross-sectional area more precisely.

Usually the wire has a circular cross-sectional shape. However, the permissible current in the wire is calculated based on the cross-sectional area of ​​the wire. Determine the cross-sectional area of ​​single-core and stranded wire. Open the wire sheath. If the wire is single-core, measure its diameter. According to the "old, school" formula of the area of ​​a circle, we determine the cross-sectional area of ​​the wire ...

A microwave oven has long settled in the kitchen of every home, in a cafe and even in an office. The ability to quickly warm up your favorite dish will not surprise anyone. But not so long ago, the microwave was a curiosity. Unfortunately, like any other technique, microwaves do not rarely break. This happens for many reasons. The fault can be caused by marriage in production and improper operation and unstable power supply.

When household appliances break down in a house, most people turn to repair shops. But far from everything - there are those who like to do everything with their own hands, and this article is for them. As you probably understood from the name, it will focus on the repair of microwave ovens.

If the circuitry for you is a dark forest, do not rush to close the page. This is much simpler than it might seem at first glance ...

Recently, very many began to face the problem of frequent burnout of incandescent lamps in their apartments. Incandescent lamps should last one thousand hours, but in reality they burn out much faster. And if ten years ago it was possible to put up with this bad phenomenon, since the lamps cost a penny, now it is already becoming a real problem. Prices for incandescent lamps are rising, and their life, alas, is constantly decreasing.

ABOUTThe main reasons for the rapid failure of incandescent lamps. Poor quality lamps. The quality of incandescent lamps of domestic production leaves much to be desired. For some reason, the most powerful small lamps burn out (up to 60W), just the ones that are most often used in lighting in everyday life). All domestic plants are approximately the same in quality. Of all domestic enterprises, the highest quality is considered ...

Your household appliances, faithfully served before that suddenly stopped working? If we are talking about something inexpensive (a radio, a hairdryer, an electric kettle, a charger for the phone), then you have a choice - go buy a new one, or try to reanimate your household appliance on your own.

Trying to repair a broken household appliance is definitely worth it, as it will not be any worse, and extra money does not happen in principle. To begin with, you should arm yourself with a minimal gentleman's set consisting of a screwdriver, a pliers, a multimeter and a soldering iron.

Whatever you repair, everything will happen according to the same scheme, consisting of the following steps. Use a screwdriver of suitable length and width to unscrew the screws that connect the case. It’s good if there is a place nearby where to put them ...

Digital technology has become so firmly entrenched in everyday life that many such devices have taken for granted. This is exactly what happened with digital cameras, which somehow quietly supplanted their film counterparts.

Together with a digital camera, a set of finger-type batteries and a charger for them are usually purchased, which allows you not to depend on constant purchases of disposable batteries. A little time passes and the happy owner of photographic equipment begins to notice that the battery charge is enough for an ever smaller number of shots. Moreover, which causes an unpleasant precipitate in the shower, a friend has exactly the same batteries working 2-3 times longer, however, in a different brand of camera. There are no miracles in electrical engineering, so let's try to figure out the reasons for this difference. Finger batteries are chemical sources of direct current ...

Household appliances are becoming more and more sophisticated every year. So "smarter" that when buying you start to doubt your mental usefulness.

It seems that you can hardly really master this miracle - you would remember how to turn on the simplest and most necessary set of functions, and the rest of the gadgets will obviously remain without use. In addition, the idea arises that, since the technique is complex, it is as easy as spoiling or breaking it.

And when it comes to a washing machine or an electric stove, it must be kept in mind that they still need to be connected. Yes, and do it right. After all, an entry in the instruction manual explicitly states: “The connection must be made by qualified specialists. Otherwise, the warranty may not be valid. ” And the guarantee is our everything! ...

Suddenly I discovered that recently, good table lamps are starting to disappear from stores. Everywhere now basically only fixtures with CFL 9/11 W are now. I think that the light from such bulbs is too little to work with various small details and just comfortable reading, not to mention the letter.

In my opinion, the lamp with a diffuse reflector of sufficient size for an incandescent lamp with a power of 75-100 W is best cope with the functions of a table lamp (60 W is not enough, but if you lower the lamp low, then you can also use 60 W), and for particularly accurate work (for example embroidery) this may not be enough - you have to temporarily screw in 150 watts. Lamps are best used matte or, even better, dairy. Mirror reflectors give too sharp shadows. The lamp should be on a tripod, allowing you to freely adjust it in all planes. But there are fewer such lamps on sale! ...

The solution to everyday problems that occur when using the welding machine at home and in the country. Practical experience in using various types of welding machines.

The snow is gradually melting and the summer season is approaching, which for many is associated with the construction or troubles of arranging a summer cottage. One of the indispensable devices in the summer residence of the summer resident has long been a welding machine, especially since the prices of household welding machines have fallen to affordable for each 4-7 thousand rubles.

If you bought a welding machine for the first time or took it from a neighbor, then the question naturally arises - how to turn it on correctly? Turn it on correctly, it means turn it on so as not to spoil the sockets and wiring when using the device for its intended purpose, not to burn the device itself and carry out the welding process ...