Do it yourself - with your own hands. Page 209

There are quite a few varieties of budget amplifiers and this is one of them. The circuit is very simple and contains only one microcircuit, several resistors and capacitors. The characteristics of the amplifier are quite serious, with such insignificant

I'll show you a way to make an LED light up without connecting wires to it. To do this, you will need to assemble a simple device using a single transistor. And you can prank your friends by showing them your magical abilities.

Everyone uses canned food these days. Their modern version is a glass jar closed with a twist-off tin lid. Anyone who has ever opened such canned food knows that it is not easy to do it manually. It's all due to the small edges sticking out from

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

This is a good and inexpensive way to make an adjustable power supply without much expense or effort. For example, I have a good power supply of 12 V and 2 A. I will assemble an attachment for it, with which I can regulate the voltage in

Everyone today knows about night vision devices. In films, they are often used by superheroes to attack their opponents at night. Some people use them as sights for night hunting. And some people just like video shooting in the dark. How

A compressor with a receiver made of PVC pipe is really possible! Surely none of the craftsmen will argue that a compressor is simply irreplaceable in the workshop. Today, many available tools are available for these devices. Yes, and economically

Personally, I made a miniature smokehouse for cooking fish while fishing. Of course, the slave can be cooked over a fire, but you can make it into a real delicacy only with the help of this simple design.

You only need two components to build a simple inverter that converts 12V DC to 220V AC. Absolutely no expensive or scarce elements or parts. Everything can be assembled in 5 minutes! You don't even need to solder! Twisted

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

For those who love to craft, a miter saw is one of the most popular and must-have tools. Having replaced the primitive miter box, it quickly gained popularity in small workshops and large-scale production. The advantage of this tool is

The simplest alarm system will notify you of the unexpected intrusion of an unexpected guest into your territory. It is installed on the door and is triggered when it is opened. You only need a couple of elements and your door alarm is ready.

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

With the onset of heat, we remember fans, the simplest and most accessible human inventions for freshening the air.The classic fan design consists of an engine, onto the shaft of which an impeller with many blades is attached. During

Now everyone is trying to keep up with the times and are gradually replacing old wooden windows in their homes with new plastic ones. Many people don’t wonder what to do with old windows and simply throw them away, but there are those who still wonder. And I can do it

For most, the term sandblasting is associated primarily with production. Many people know that sandblasting cleans freshly cast iron blanks from scale and slag. Perhaps someone has seen how they use it to clean rust or old paint with

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

How annoying I am are the charger wires that always get tangled. As soon as you charge the phone and put the wire in the nightstand, the next time the surprise is ready - the wire is tangled. I'll show you how to avoid this and make a wire from a regular straight wire

Most Soviet and foreign radio amateurs are very familiar with the analog integrated timer SE555/NE555 (KR1006), produced by Signetics Corporation since the distant 1971. It is difficult to list for what purposes it is not

We welcome all visitors to our site! More recently, information has appeared on our Internet resource about some devices, such as homemade machines, etc. Today we will tell you about another effective device - a hand-held circular saw!

When it is necessary to protect an object, people come up with different methods of protection. They hang padlocks, put code locks, and 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

Today, autonomous technologies are increasingly attracting interest. And this is no coincidence, because for lovers of travel and recreation outside the city, this is a real find, and sometimes salvation. The popularity of such gadgets is also due to the fact that they can be made, if not from

This tutorial will show you how you can get 5V USB from a 9V battery and use it to charge your mobile phone. The photo shows the assembled circuit in action, but this is not the final version, since I will also make a housing for it at the end.