Do it yourself - with your own hands. Page 190

I have a regulated power supply. Only voltage is regulated; therefore, there is no current regulation. For some purposes it is enough. I decided to assemble a unit with current and voltage regulation. Laboratory power supply, hereinafter referred to as LBP, is very

Suddenly you want crispy chips, but don’t feel like going to the store? I bet I can cook chips faster than you can go to the store for store-bought ones? Don't believe me? I make super quick chips in the microwave in less than 10 minutes!

Hi all! This is the composition lying on my table. And what do you think is all this for? Yes, yes, I decided to assemble a night vision device. Let's say, to watch owls at night. I find this very interesting.

I continue to sharpen the knife. I have already shown my homemade device for making descents (tapering surfaces of the blade).At the same time, I made a polishing disk, sewing several disks together so that they would not diverge. The next task was to sharpen

Powerful, ultra-bright LED light sources have now become popular and available. The advantages of LEDs are that their service life is much longer - up to 20,000 hours, and not 1000 hours like conventional incandescent lamps. Also LED modules

There are many different LED flasher circuits on the Internet - simple, complex, with or without microcircuits. But a regular flashing LED will no longer surprise anyone, so there is a need to assemble something more advanced. For example,

To power various electronic devices and DIY circuits, you need a power source whose output voltage can be adjusted within a wide range. With its help, you can observe how the circuit behaves under one or another

Today I will tell you how you can make a new handle for an old knife if the original handle has fallen apart. I had a couple of shoe knives, one of which had a handle that cracked and split into two halves.

Sometimes there is a problem with the chuck beating in a screwdriver or drill. The tool was given as a gift or it was purchased a long time ago, the defect was not noticed in time, there is no receipt and it is impossible to make a claim. But working with such a screwdriver is very difficult or impossible. I

Quite often, residents of apartment buildings need to attach a picture, hanger, shelf or some other piece of furniture to the wall of their apartment. To do this, mark a point on the wall and drill a small hole

Hello, ladies and gentlemen, today we’ll talk about the round shield, which was used by both our ancestors - the Slavs, and the northern Scandinavian warriors, known throughout the world - the Vikings. I want to say right away that this is not a reconstruction, i.e. creation method

Probably, many have encountered the problem of going out into nature for the night and it’s dark around, because the light from a fire is not enough for a modern person to feel comfortable. For these purposes, you can make an LED

Hi all! It is quite possible to make a simple desulfator from old and unnecessary things in about 15 minutes, if, of course, you know what to make and from what. Any normal radio amateur has a lot of all kinds of electronic junk. And if you scratch

In this simple way you can make not only a round hole in hardened steel, but also a hole of any other shape without any extra effort. The chemical method will help you out and make the task easier. The method does not require expensive chemical reagents, everything

A flying balloon is perfect for any holiday event.Typically, commercial flying balloons are filled with a light, volatile gas such as helium. It is almost impossible to obtain such gas at home without special equipment. But helium doesn't

As you know, all modern cars are equipped with direction indicators, which are a flashing light bulb or LED on the left or right side of the body. Sometimes a standard electromechanical relay fails, and getting a powerful one

A homemade device was invented to simplify the laying of cinder blocks. In the absence of experience, it is quite difficult to maintain a seam line of the same thickness. Therefore, we constantly had to remove cinder blocks, throw up or level the layer of mortar. WITH

Building your own home is not an easy task. Especially if you are not a professional, do not have complete knowledge, and do not use the tool so skillfully. Yes, and you are building a house for the first time. I think there are many such entry-level masters. But not

I have always been fascinated by obtaining free energy from natural resources. And somehow I got the idea to make a simple mini power station that would generate electricity from a passing water stream. It all started with an idea

One of the benefits of outdoor recreation is cooking over an open fire, which makes ukha, kulesh and even simple tea seem incredibly tasty.But it is not always possible to find suitable stones to build something like a hearth. Therefore, take a light one with you

We are all accustomed to piggy banks being depicted in the form of pigs, into which money is scrupulously put. If you want to save up a certain amount to buy something you need, then a piggy bank will definitely help. But we'll have to wait. In the same lesson it is proposed

A self-locking nut is a very useful thing, especially when you need to fix a component or assembly that is subject to dynamic loads. A simple connection under the influence of vibration will quickly weaken and begin to unscrew, which can lead to

Search magnets have become a very popular topic today. This kind of “fishing” attracts not only boys and scrap metal seekers, but also quite respectable and wealthy people. Why is this happening? There is a boy in every man, but the traditional

The current-carrying windings of the electric motor are routed into a distribution box. The terminals of the windings form two parallel rows, each marked with the letter C and numbers from 1 to 6. This is done in order to mark the beginning and end of all three windings.