Have you ever thought about how high humidity and ambient temperature affect the operation of electronic devices? And yet, this is not an idle question, and it is especially relevant in the warm season, when the sun is baking somewhere, and somewhere the humidity is so high that it becomes hard for people to breathe. Someone will leave the GBP navigator sunbathing in the car near the windshield, while another will forget the mobile phone in a cozy steam room. How severe are the costs of such tests for our electronic devices? Let's think about it.

Of course, lithium batteries left in the sun are a well-known story: your e-book or tablet left on a beach towel will swell. And all because at elevated temperatures the normal operation of the lithium battery is violated, excessive gas evolution begins in it. Therefore, it is best to leave these devices at least in the shade.or better at home ...

Andrei Golubev, the author of video tutorials on repairing consumer electronics, microwave ovens, televisions and audio equipment, devotes his video tutorials to those who do not want to be a slave to customer services and spend many times more money on household appliances when they break down than when they buy.

His main profile is the repair of DVD, CD players, which at one time made Andrei Golubev popular. Then he began to repair microwave ovens, LCD televisions, monitors and other consumer electronics. And so the hobby turned into a real business, and then a desire arose to share the accumulated experience with others. Have you ever seen how experienced specialists easily find faults and masterly handle tools and measuring instruments? Many people are ready to constantly admire someone’s work.without even thinking that they can learn all this ...

A microwave is one of the most commonly used electrical appliances in the kitchen. Once again, you put food on warming up - the microwave is buzzing habitually, the lights are working inside, the food plate is spinning, but after the time set on the timer, the food remains cold. What to do in this case? The failure of the microwave oven causes a number of inconveniences, so many people prefer to try to repair the microwave oven on their own, saving not only time, but also money.

Why doesn't the microwave heat food? Consider the possible causes of malfunctioning microwaves with mechanical control. We also give a good example of troubleshooting a microwave oven. If the microwave oven works, but does not heat food, then first of all you need to make sure that the voltage in the network is not too low. Very often, the conclusion about a malfunction of the microwave is erroneously made ...

An impact drill is capable of performing conventional drilling only with impact. The gearbox of such devices can have either one or two speeds. As additional functions, there is a reverse stroke and the ability to configure the desired idle speed.

An impact drill has two helical gears that contact during normal operation of the drill. When it is necessary to drill with impact, one gear moves, thus forming a gap with the gear in front. Further, the rear gear remains stationary, and the one in front begins to slide along the teeth and move the cartridge up and down. This is how the impact of many impact drills is created.Moreover, the number of such strokes can be 40,000 in one minute. It should be noted that the shock function of the drill should be used only in the most emergency cases. If the drill is constantly used with a shock function, then very soon the hammer mechanism may fail ...

Often there is such an unpleasant situation as the failure of the kettle, and at the most inopportune moment. You can hand over a failed appliance for repair, but it will take time. Also, there may not be free masters and will have to do without a kettle even longer. Or, perhaps, the cause of the failure could be a minor easily fixed malfunction - then it will be a pity for the means thrown out for repair.

In general, why not try to repair it yourself, while saving time and money? In this article, we give recommendations that will help determine the malfunction of an electric kettle and, if possible, eliminate it. Most electric kettles, regardless of their cost, have a similar design. In order to find a malfunction of an electric kettle, it is necessary to understand the principle of its operation. Let us briefly describe the principle of operation according to the above scheme ...

In the article "How to control a chandelier in two wires", various schemes were considered that allow switching several groups of lamps. The operation algorithm for all circuits is the same: with a short click of the switch, the first group lights up, with the second second, with the third click both groups at once. To turn off the chandelier, switch the switch, as usual, to the open position. All the circuits considered at different times were developed by radio amateurs.

In Chinese-made chandeliers, such devices are already installed, and in addition to them there are some additional lighting and even sometimes sound effects. My colleague at work was engaged in the repair of one of these devices: until you are busy repairing production equipment, you can work hard for yourself. And the defect of the mentioned device was like this - no matter how you click the switch, nothing turns on. Still managed to repair the circuit ...

Collector motors can often be found in household electrical appliances and in power tools: a washing machine, grinder, drill, vacuum cleaner, etc. Which is not at all surprising, because the collector motors allow you to get both high revolutions and high torque (including high starting torque ) - which is what is needed for most power tools.

At the same time, collector motors can be powered by both direct current (in particular, rectified) and alternating current from a household network. To control the rotational speed of the rotor of the collector motor, speed regulators are used, and they will be discussed in this article. To begin with, recall the device and the principle of the collector motor. The collector motor necessarily includes the following parts: rotor, stator and brush-commutator switching unit. When power is supplied to the stator and rotor, their magnetic fields ...

The microwave today occupies an honorable first place among kitchen appliances. And this is not at all surprising, because with the help of a microwave oven you can both heat and defrost, and prepare various dishes. But more often than not, we warm it up in it. In a matter of minutes, you can warm up a good bowl of soup or pasta with grated cheese on top. In short, a useful thing is a microwave.

According to legend, the inventor of the microwave, American engineer Percy Spencer, working in his forties with magnetrons for radars, once noticed how, during one of the experiments, the microwave radiation of the magnetron so heated the chocolate in his pocket that the chocolate melted and burned Spencer. So Spencer came up with the idea of ​​creating a microwave oven, and already in 1947, the first Radarange microwave oven, designed to defrost food in canteens ...