In washing machines, automation most often fails, in second place are bearings and rubber products. The engine is the most reliable unit, it is used in the manufacture of various home machines. But for this you need to be able to change
Sometimes there is a need for electric welding of small parts, which will not be subjected to a serious load. In the absence of a welding machine, this problem can be solved with the help of a battery and a graphite rod from a finger battery.
Despite the abundance of powerful microcircuit and transistor sound amplifiers, there is always a need to have a small portable stereo amplifier that does not require powerful power. Just this one can be built on the TDA1517P chip, its another
I decided to redo my laboratory power supply. Although it is reliable, it is heavy and takes up a lot of space. The desktop is always lacking. When planning a reshuffle. I decided to hang a hinged shelf and under it is full of space. The idea came quickly, I do
To power many LED bulbs and spotlights, 12 V is required, which forces you to buy or get a power source somewhere. In fact, you can make it yourself from inexpensive parts.
Soldering wires is a complex skill that is not available to everyone. To solder well, you need practice and lack of rush. There is an alternative, very simple and faster way to connect wires using special heat-shrink sleeves with
Now many speakers are sold that have a card reader. You can install a memory card or USB flash drive. This is certainly great, but if someone wants to listen to music from their phone? You need to pull out the card and insert into
Physics is an exact science with its own laws, for the demonstration of which one can set spectacular experiments. Consider 6 interesting experiments. 1. Getting electricity from the temperature difference ...
In the absence of a DVB-T2 broadcast signal of sufficient strength, it becomes necessary to use an antenna with an amplifier. Such equipment is easy to assemble with your own hands from purchased parts, the acquisition costs of which will be about $ 1.
Walk-through switches are usually used in long corridors or at large distances when you need to turn on or off in one place and turn on or off in another lighting or electrical appliances. In this case, you have to pull 3-wire or more
A pulse soldering iron differs from the usual one in that it heats up almost instantly. It can be used just a few seconds after being connected to the network. In this case, the pulsed version is economical, has a small size and allows
We propose to assemble the simplest circuit that clearly demonstrates the operation of the pulse counter with a built-in decimal decoder (decoder) - running lights. Failure to make a printed circuit board for this homemade product allows you to quickly assemble and run
When soldering, it is very convenient to use solder paste. You can buy it or make it yourself. When heated, homemade pasta flows better than the factory one. When soldering the twists, it penetrates deeper, which ensures the reliability of the connection. Its application
This article will help to do a useful thing in everyday life, to please yourself and your loved ones, to understand the basics of radio technology. For the manufacture of running lights you will need very little time. The necessary radio components can be bought at specialized
Currently, "electronic cigarettes" are quite popular. But they often fail or are simply thrown away due to a dead battery or a broken power button. However, from this device you can make a good small-sized
The laptop was idle for some time and after turning on the battery refused to charge - the situation, I think, is familiar to many. There may be other reasons and cases that result in the failure of the built-in battery.
Surely everyone in their life had a situation where it was necessary to solder a fallen off thin wire, or to replace a very small SMD component with soldering, but there was only a regular soldering iron on hand. Very small soldering with a thick sting is very
Very often, nickel-cadmium batteries refuse to charge at a time when this is so necessary. They are especially moody and do not tolerate neglect. Failure can be due to the following reasons: recharge, too long were in
I once bought a centrifugal pump to water my garden to pump water from a well located nearby. And I thought about why pulling a 220 V network to the well and wasting electricity, when you can remake the pump for low-voltage power and