So, let's talk about how to solder aluminum. Those who are faced with this problem know that aluminum does not solder well. The reason is a thin oxide film that quickly forms on the surface of this metal in the open air. Therefore for soldering

Hello, friends! I want to tell you how you can create something useful using your old mobile phone. Namely, it will be the simplest GSM alarm system, with which you can remotely control various objects, such as

Let's talk about the introduction of wireless technology. Specifically, we will focus on the transmission of sound via Bluetooth. For example, there is an old radio in your car, which Bluetooth has never dreamed of. What can be done in this situation? Of course you can buy

Phyto LED-matrix for plant illumination, having its own power driver, is connected directly to the 220 V network. It works for almost half a day every day, while its body is very hot. Necessary cooling matrix attached to

I want to share with you the idea of ​​how to use the tape deck of a radio or music center. Few people in the house did not have such equipment, which is a useless load due to the fact that the magnetic recording of music on film tapes

Sometimes it happens that you need to charge a battery of a certain size, but we have a charger for a different size. Chargers in stores a huge assortment, both for certain batteries, and universal, charging

Good modern indoor antennas almost all have a built-in signal amplifier. And this is another hanging wire, in addition to the antenna cable. Therefore, as an amplifier inside the antenna, electricity is required for good work. It could be like

Electricity creates comfort, but becomes dangerous if an accident occurs in the power supply. A short circuit of potentials sharply increases the current in excess of the permissible value. The wires overheat, which can cause a fire. Decline

Nowadays, SMD LEDs are increasingly being used. In household bulbs, LEDs 2835, 5530, 5050 are mainly used. The printed circuit board consists of an aluminum plate on which an insulating material is applied. There are tracks with

Mice and rats accompany humans everywhere. They destroy products, crops in summer cottages and fields, carry viruses of severe infections and even bite signal wires in devices.

It is used to repel an attack. For example, feral dogs, when the device is idle, a strong smell of ozone spreads at lightning speed, which can scare away the animal, since the smell of ozone in animals is associated with a thunderstorm and

This powerful e-bike is capable of carrying two people safely. Unlike the classic design of an electric bike on a motor wheel, this model uses an asynchronous electric motor. As a result, increased efficiency and a strong initial moment.

On the basis of sound electronic modules, you can make a lot of various homemade products. It can be doorbells, toys speaking text or some kind of musical fragments, voice acting of important signals or vehicle parameters, or

Progress does not stand still and a simple heat shrink to insulate the wire will not surprise anyone. Therefore, now we will talk about a completely new and innovative way to connect two wires without soldering, twisting in a couple of seconds. New on sale

Sometimes, to make some kind of switching with the remote control, you need to get up and come very close to the managed device. And sometimes, you have to rotate the remote control and frantically, pressing the buttons, try, like a shooter to get into the infrared receiver

Grounding and grounding - ensuring the safety of people working with electrical installations and networks, using household or industrial appliances powered by electricity. Any accident of such devices related to violation of insulation threatens

It was necessary to make a welding unit for use in the garage and in the country. Simple but powerful, up to 200 A output current to weld steel up to 12 mm thick. electrodes “four” or “five”.

I have an old music center, which eventually “moved” to the country, but I really like it. Appearance of the apparatus is so-so, but the sound is simply gorgeous! I especially admire his low-frequency amplifier.

Surface mount electronic components, unlike traditional radio components, do not have flexible leads. Passive elements are made in the form of a cylinder or parallelepiped with metallized ends. In microcircuits, where there are many conclusions,

The usual way of a home master: you need a certain device, we begin the search for materials and manufacturing technology. We will consider the option exactly the opposite: there is an initial blank (a working, but not necessary remote control), but it is not clear how it

A 3-phase motor can be used to operate from a household AC network of one phase with a voltage of 220 volts. Alteration is possible, even if there is not much experience in electrical work with a minimum installation skill. Additional costs

The network has repeatedly hosted options for using a laptop adapter as a charger for a car and other batteries, using a lamp as a load resistance. You can, of course, and so, but much

To create the effect of sequentially changing the RGB LEDs of the tape, it is proposed to assemble a simple electronic control circuit. The voltage from each of the three outputs of the self-oscillating ring multivibrator is alternately supplied to the input R, G or B

Every person who collects electronic circuits needs a universal power source that allows a wide variation of the output voltage, current control and, if necessary, disconnect the powered device. In stores like