DIY electronics. Page 2

With the help of this small pocket generator, you can immediately charge not one, but several cell phones, light an LED lamp, and there are other possible uses for it that didn’t occur to me. It produces a pure sine wave

In radio-electronic equipment, an electronic switch is part of the control elements of the device. These can be household appliances such as: TV, microwave oven, monitor, computer, amplifier, etc., as well as industrial devices, blocks

A supercapacitor (also known as an ionistor) is almost the same capacitor, only with a large capacity comparable to a battery. I made a 12 V battery from such ionistors, which can be used in various devices. And it will last longer

So, let's talk about how to solder aluminum.Those who have faced this task know that aluminum is difficult to solder. This is due to 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 an old mobile phone. Namely, this will be the simplest GSM alarm, with which you can remotely control various objects, such as

The phyto LED matrix for illuminating plants, 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 gets very hot. Required cooling matrix attached to

Almost all good modern indoor antennas have a signal amplifier built inside. And this is another hanging wire, in addition to the antenna cable. Because the amplifier inside the antenna requires electricity to work well. It could be like

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

Sometimes, in order to make some switches with the remote control, you need to get up and come almost close to the device being controlled. And sometimes, you have to rotate the remote control and frantically, pressing buttons, try, like a shooter, to hit the infrared receiver

I have an old music center, which over time “moved” to the dacha, but I really like it. The appearance of the device is so-so, but the sound is simply gorgeous! I'm especially fascinated by its 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. For microcircuits with many pins,

The network has repeatedly posted options for using a laptop adapter as a charger for car and other batteries, using a car lamp as a load resistor. It is possible, of course, and so, but much

To create the effect of alternately changing the RGB LEDs of the strip, 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

KT315 is a legendary domestic transistor, copies of which are present in large quantities in every radio amateur. Not surprising - after all, this is the very first mass-produced silicon transistor; you can find it in almost any

The sun is an inexhaustible source of energy, and it is also environmentally friendly. Nowadays, extracting this same energy is not a problem, both for individual use and on an industrial scale. Solar modules come in a wide variety

If you thought this was some kind of prank or joke, then you were mistaken. This pocket flashlight really only works on water and nothing else. Each of you can repeat it and make the same one for yourself, especially since the scarce elements in

The device of the bur machine is not the most complicated; motor and start button in the housing. But bur machines come in different types. It all depends on the manufacturer. Many manufacturers also install a button to reduce speed. This is not an electric button, but a clean one

In modern times, we have more and more electronic devices. Smartphones, tablets, smart watches, MP-3 players. Charging them at the same time sometimes becomes a task. You can, of course, take an extension cord for a certain number of sockets and organize

An excellent life hack for radio amateurs and more.For those who had to solder oxidized copper wires. This cleaning method can also be very useful for motorists.

Quite often, such a nuisance occurs as a wire (cable) breaking near the plug. This happens especially often with wires that are subject to constant vibrations and movements. For example, headphones, chargers, multimeter probes and

It's no secret that the tablet's battery is very energy-intensive. Otherwise, how to “feed” such a giant, which has a large screen, powerful speakers and no less powerful Wi-Fi, Bluetooth and GPS modules... It’s very unpleasant that these devices break down

I have been using low voltage soldering irons for a very long time. It just so happened that I got a few of them. They are powered by a safe 42 volts. Usually they are connected to a transformer, but I don’t have one. I use it for nutrition

Every day, radio amateurs are increasingly using SMD parts and components in their work. Despite their size, they are easier to work with: you don’t need to drill holes in the board, bite off long pins, etc. You need to master soldering SMD parts

Hello! Being an amateur electronics enthusiast, I am sure that everything we do - electronic toys - homemade products, or large projects - is all out of curiosity and laziness.Curiosity strives to understand and comprehend the vast, unknown,