Various instructions have been posted on the Internet to turn an old (sometimes partially inoperative) television into a widescreen oscilloscope. This article also tells how to create a decent electronic device, using a simple refinement of the general

Clean energy derived from natural resources is one of the most popular topics today. Imagine that you have a generator in your country house or country house that supplies all the resources of your household with free electricity. it

Most hams, including myself, faced such a problem as leaving the multimeter turned on for a while and forgetting about it, which ultimately leads to frequent crown replacement due to low discharge. In this case, solve this problem

There are a lot of varieties of budget amplifiers and this is one of them. The circuit is very simple and contains only one chip, several resistors and capacitors. The characteristics of the amplifier are quite serious, with so little

I will show you a way to make the LED glow without connecting wires to it. For this, it will be necessary to assemble a simple device on one transistor. And you can play friends by showing them your magical abilities.

I propose to make a really useful homemade work - the illumination of the kitchen cabinet. Just imagine, you open the cutlery drawer and the light comes on. It is very beautiful and unusual. Such lighting can be equipped with any place, whether

This is a good and low-cost way to make an adjustable power supply without much cost and effort. For example, I have a good power supply unit for 12 V and 2 A. I will assemble a prefix for it, with which it will be possible to adjust the voltage

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

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

In this workshop I will show 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 quite enough to warm your hands. The mini heater is very

To make devices for drilling boards, I do not use purchased cartridges and other parts is very simple. I have drilled more than one hundred holes in home-made circuit boards with such a drill from a motor in my time. Time spent making this

In everyday time, people often use gadgets (smartphones, tablets, etc.), but when going somewhere on the road, we constantly need to charge our phone. This problem will be solved by Power Bank which can be manufactured in an hour and a half from the available

With the analog integrated timer SE555 / NE555 (КР1006), manufactured by Signetics Corporation since the distant 1971, most Soviet and foreign radio amateurs are well acquainted. It’s hard to list for what purposes not

When you need to protect an object, people come up with different methods of protection. They put padlocks, put code locks, put howlers. I decided to make my contribution to such devices. More precisely, I came up with an actuator. They, in turn, can include

This workshop will show you how to get 5 V for USB from a 9 V battery and use it to charge your mobile phone. In the photo, the assembled circuit is in work, but this is not the final option, since I will also make a case for it at the end.

I want to share with you my example of how I made a simple keyboard backlight for my favorite computer. This backlight does not shine in the eyes and has electronic brightness control of the glow. It can be connected as to the power supply itself

Country and country life is full of unforeseen surprises. They either turn off the gas, or shut off the water, and then the electricity suddenly disappeared somewhere. A dull and boring pastime will help brighten up the stand-alone LED lamp, which you can make in

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

This is a very simple set-top box for your existing charger. Which will control the charge voltage of the battery and when it reaches the set level - disconnect it from the charger, thereby preventing

Many probably have a problem with charging a Li-Ion battery without a controller, I had this situation. I got a dead laptop, in the battery 4 banks SANYO UR18650A were alive. I decided to replace the LED flashlight instead

Such a device can be made quite quickly and simply. Complex and expensive parts will not be required, but, despite this, the device can be very useful in protecting your beloved “horse”. Currently, anti-theft devices have taken the path of complication,

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

The scheme 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 alerts.For example, alarm, sound dubbing

Anyone who has ever wondered “why a battery breaks down” knows that most batteries fail because of plate sulphation. All lead-acid batteries are susceptible to this phenomenon. I was surprised at the simplicity of working on