Electronics. Page 39

The blocking generator is a generator of short-term pulses repeated at fairly large intervals of time. One of the advantages of blocking generators is their comparative simplicity, the ability to connect the load through

I present to your attention a very small Tesla coil on one transistor or Brovin Kacher. In a Tesla coil, a very high high-frequency alternating voltage is supplied to the primary winding, and in a kacher, the primary winding is fed by a collector

I think many people wanted to assemble such a cube, but not everyone had the opportunity to purchase a microcontroller (MK), and not everyone knows how to program. So here's an alternative. . .

I would like to present to your attention a simple converter for powering fluorescent fluorescent lamps or energy-saving lamps.The circuit is built on the basis of a single-cycle blocking generator and consists of only six parts.

You can make a very beautiful Christmas tree if you wish. And it’s unlikely that anyone else will have one like this. You can even give this device to someone. The principle of operation of the Christmas tree is quite simple.

LEDs can be very efficient and economical in long-term use. 10 watt LED bulbs can replace a 100 watt incandescent bulb or a 30 watt compact fluorescent bulb. Despite the relatively high

Almost every radio amateur is faced with the problem of an overheated soldering iron, when the tip heats up more than necessary. Soldering with such a soldering iron is not very convenient: the solder begins to change color, becomes covered with an oxide film, the flux instantly evaporates or

There are many ways to make guitar pickups. I will tell you about the simplest one, which requires minimal knowledge in radio engineering.

Alkaline batteries last quite a long time, but when their charge drops below one volt they become useless in most devices. Usually such batteries are thrown away. I suggest using battery energy more efficiently and making

This article is not a guide on how to install a sensor, but rather on how to upgrade it yourself for home use.Now motion sensors are sold completely ready for installation. In addition to the motion sensor itself, it has a built-in light sensor and

There are times when a small-sized light source is needed or a light source is not at hand at all. This mini flashlight can come to your aid. It can be made in a short period of time from available parts.

An electroscope is a simple indicator device for determining electrical charge. It is very easy to make at home with your own hands. To do this we need a piece of foil and a jar with a plastic lid. . .

A night light clock is a wonderful thing for those who like to wake up at night. Usually people wake up in the middle of the night and frantically look for their mobile phone to check the time. Our craft kills two birds with one stone: it is both a clock illumination and a night light. Sveta

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.

The model is entirely based on Hillary Eldredge's patent, US 603,058 "Electrical Retort" introduced April 26, 1898. The combustible gas is produced by an electric arc produced by graphite rods immersed in distilled, potable, salt or

I think many people remember the famous film by Leonid Gaidai “Operation Y and other adventures of Shurik”, how they passed the synchrophasotron exams there. This is exactly what this collection of miniature devices for passing exams will be about.

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.

An eternal flashlight or Faraday flashlight is the name given to a flashlight with an alternative power source. That is, this flashlight does not require batteries or battery charging. To light it, you need to shake it. The flashlight itself contains a generator and

The cooler windmill is more of a toy than a real one. It produces 1.5 - 2 volts in a breeze of 4 km/h and at a current of 20 mA, which is quite enough to charge one battery. But you can do more than one, so there is still a prospect. . .