DIY electronics. Page 11

Our plasma ball will be an ordinary incandescent lamp, but the high-voltage high-frequency source is quite simple. In addition, from our source you can build not only a plasma ball, but also demonstrate beautiful experiments with

The operating principle of a Van de Graaff generator is very similar to that of a Wimshurst machine, but instead of rotating discs, it uses a moving belt on two pulleys. The belt is electrified by friction against the lower pulley (in large machines it

We have already talked about how to use a stepper motor as a generator that produces electric current. In this DIY we will use a stepper motor as a bicycle generator.

This is a simple sensor considering its sensitivity! I decided to use a small ionization chamber with a current amplifier built on a compound transistor as a sensor. This scheme works really well after 5-10 minutes,

If you are at least a little familiar with electronics, then you know that an LED from one 1.5 volt battery will not light up. The LED does not have enough voltage. How then can you make a miniature flashlight using one battery? - Just . . .

Sometimes it is difficult to find the switch in the dark. To make this work easier, I propose to build a backlight into it. We will need three radio components and a little time. . .

I was prompted to write this article by the great interest of users in the design of a USB refrigerator assembled on a Peltier element. In this article I want to tell you in more detail about the use of this element in history, life and in practice.

Most wind generator builders are faced with a problem - where to get a generator? The usual type from a car or motorcycle will not work, as they need high revs. Today we will make a generator specifically for a windmill. It's simple

Jacob's ladder - two electrodes located as in the picture are called.It is most likely the most beautiful use of an electric arc :))) And it works like this: an arc appears at the bottom of the electrodes, the air around it heats up and

Of course, you won’t weld with such a welding machine in everyday life, but in a hopeless situation it will definitely help out. And besides, I haven’t seen a simpler device yet. . .

Once the idea of ​​the need to install energy-saving lamps at home was introduced into consciousness, many began to install them en masse in their homes. But soon you are surprised to notice that the durability of such lamps is a maximum of half a year, the brightness and temperature of the light

It was evening, there was nothing. While surfing the Internet, I came across this device: And I really wanted it, but as it turned out later, they don’t sell it in our city. Well, if they don’t sell it, then we’ll make it.

We bring to your attention two miniature soldering irons, the most affordable to manufacture and meeting the requirements for the installation of miniature electronic products.

One of the simplest devices is a hidden wiring detector. It is simple, but can be indispensable for repairs. . .

Disco strobe light with amazing police flasher effect! Compared to xenon, LED is more durable and unpretentious. It can also be used for cars. . .

Although, depending on the manufacturer, economy lamps have a warranty of up to 3 years. But consumers may be faced with the fact that the light bulb has burned out, and you do not have the packaging, purchase receipt, or the store has moved to another location, i.e.

The generator is very simple in the truest sense of the word. You can use it in wind generators, some other devices for generating electrical energy, or just watch the video and get acquainted with the operation of an electric generator.

Why did I call this flashlight unusual? - Yes, because its design includes only 4 components: a pack of cigarettes, a few coins, an LED and plain water. . .

As it turns out, quite ordinary things can be made into very unusual ones. For example, let's make a metal detector out of a radio receiver and a calculator. . .

The first circuit is the simplest multivibrator. Despite its simplicity, its scope is very wide. No electronic device is complete without it. . .

Here you can clearly see how an ordinary electric current flows through an ordinary sausage. By the way, the sausage was not damaged after the experiment, but on the contrary, it became appetizing and hot :-)

Summer comes, and with it mosquitoes and all sorts of other midges appear.Everyone knows how annoying mosquitoes are, especially at night. The proposed device allows you to protect yourself from all insects, and if you increase the frequency of the generator to ultrasound, then also from dogs.

Investigative practice shows that lies and denial of guilt by criminals during interrogation are associated with various physiological phenomena. First of all, this is an increase in blood pressure, a change in skin moisture, as well as uncontrolled swallowing of saliva,

A very simple and effective shoe dryer is described here. Thanks to constant air convection, it dries shoes much faster than conventional dryers, and its small dimensions allow you to take them with you anywhere. . .