DIY electronics. Page 6

Who would have thought that a simple inverter could be made without the use of transistors and complex circuits. Last time I showed how to make an inverter without transistors on a relay. As it turns out, this is not the only way to build an inverter. I'll show you how

Now a lot of digital equipment is breaking down, computers, printers, scanners. Time is like this - the old is replaced by the new. But equipment that has failed can still serve, although not all of it, but certain parts of it for sure. For example, in printers and

A useful homemade product that will definitely come in handy almost anywhere where there is a USB: At home for lighting: you can connect it to either a computer or a laptop. When hiking, fishing or hunting: you can connect to an external battery (power

Agree, it is very convenient when there is a USB socket for charging gadgets next to a regular outlet.There is no need to charge the main outlet. Nowadays, almost all portable equipment is charged from USB ports and this is a big plus, since there is no need

How to charge a cell phone using a candle? It’s very simple - for this you can assemble a simple thermal power plant from just a few very affordable elements. This little thing is pretty cool, you can take it with you on a hike or fishing trip.

The history of hydropower begins with a simple water wheel, which our ancestors came up with the idea of ​​installing on the rapids of a river. At first it was used for the mill, thereby facilitating the work of the millstones. Later people learned to use force

There are various instructions on the Internet for turning an old (sometimes partially non-working) TV into a widescreen oscilloscope. This article will also tell you how to create a decent electronic device using a simple modification of the general

Most radio amateurs, including me, have encountered the problem of leaving a multimeter turned on for a while and forgetting about it, which ultimately leads to frequent replacement of the crown due to low discharge. In this case, solve this

I suggest making a really useful homemade product - kitchen cabinet lighting.Just imagine, you open the cutlery drawer and the light comes on. It's very beautiful and unusual. Such lighting can be equipped in any place, be it

Over many years of amateur radio activity, I have encountered different situations. For example, you need a slightly more powerful transistor than is available. Getting out of this situation is not very difficult. It is enough to add a radiator to such a transistor and

In this master class I will show you how to make a small electric heater that runs on 12 volts and consumes 80 watts of power. It gives a nice warm breeze which is enough to warm your hands. The mini heater is very

It’s very simple to make devices for drilling circuit boards without using purchased cartridges or other parts. Over the course of my time, I have drilled hundreds of holes in homemade circuit boards with this motor drill. The time spent making this

In everyday life, people often use gadgets (smartphones, tablets, etc.), but when we go somewhere, we constantly need to charge our phone. This problem will be solved by a Power Bank that can be made in an hour and a half from

When it is necessary to protect an object, people come up with different methods of protection. They hang padlocks, put code locks, put up howler bells. I decided to make my contribution to such devices.More precisely, I came up with an actuator. They, in turn, can include

Country and country life is full of unexpected surprises. Either the gas would be turned off, or the water would be cut off, and then the electricity suddenly disappeared somewhere. A dull and boring pastime will be brightened up by an autonomous LED lamp, which can be made in

Hello friends, today I will tell you about the circuit of a guitar gadget with the distortion effect. The project is quite simple, I recommend it for beginners in soldering.

Many people probably have a problem with charging a Li-Ion battery without a controller; I had this situation. I received a dead laptop, and there were 4 SANYO UR18650A cans in the battery that were alive. I decided to replace it with an LED flashlight, instead

Have you ever wanted to check your radioactivity levels? Or maybe you wanted to prepare for the nuclear Apocalypse? Then this master class on making a Geiger counter is just for you. I'll show you how to make a very simple and cheap counter

The circuit presented in this article is very easy to repeat and should not cause any difficulties in assembly. It can be used in various devices for sound notification. For example, alarms, sound duplication of signals

Anyone who has ever wondered “why a battery fails” knows that most batteries fail precisely because of sulfation of the plates. All lead-acid batteries are susceptible to this phenomenon. I was surprised by the ease of operation

A very simple third-hand soldering jig is fairly easy to assemble from a few common components. It will only take you 15 minutes and you will have an easy-to-use device with which you will not only

It has long been proven that flat antennas are good at receiving terrestrial digital television signals with frequency modulation based on COFDM technology. This gave me the idea to make a simple outdoor antenna from a plastic pipe and a metal

This is a short tutorial on how to make a relatively small, inexpensive, and fun smoke machine that can be used for pranks, magic tricks, air current research, and anything else you can think of.

Converting an old fluorescent lamp into an emergency LED lamp for the garage. This very practical and economical lamp will certainly come in handy in any garage, especially one where the power is often cut off. You can use it at home too, because