Simple diagrams. Page 2

The simplest LED brightness control circuit presented in this article can be successfully used in car tuning, or simply to increase comfort in the car at night, for example, to illuminate the instrument panel, glove compartments, etc.

A do-it-yourself device using a single transistor can be made by almost anyone who wants it and makes a little effort to purchase very inexpensive and not numerous components and solder them into a circuit. It is used for

According to statistics, more than half of batteries fail due to plate sulfation. I won’t go into detail about the reasons why this phenomenon occurs, but in a small part it is due to improper use of the battery. And in

This power supply on the LM317 chip does not require any special knowledge for assembly, and after proper installation from serviceable parts, it does not require adjustment. Despite its apparent simplicity, this unit is a reliable power source.

Such a simple, but at the same time very effective regulator can be assembled by almost anyone who can hold a soldering iron in their hands and even slightly read the diagrams. Well, this site will help you fulfill your desire. The presented regulator regulates

Almost all motorists are familiar with the problem of rapid failure of LED lamps. Which are often placed in side lights, daytime running lights (DRLs) or other lights. As a rule, these LED lamps have low power and

Almost anyone who knows how to hold a soldering iron can make a water level sensor with their own hands. And this article will help you step by step, with the help of photographs, to make a water level indicator in the tank with your own hands from simple and

This is the simplest audio amplifier, capable of delivering 50 watts of power to each of the four channels. This adds up to 200 watts of sound power. And this, as it turned out, is not the limit. The microcircuit on which the amplifier is built can give 80

You will need just one chip to build a simple and complete FM receiver that is capable of receiving radio stations in the range of 75-120 MHz. The FM receiver contains a minimum of parts, and its configuration, after assembly, is reduced to a minimum. So

The stabilized power supply discussed below is one of the first devices that are assembled by novice radio amateurs. This is a very simple but very useful device. Its assembly does not require expensive components that

The more I understand the modern element base, the more I am amazed at how easy it is now to make electronic devices that previously could only be dreamed of. For example, the antenna amplifier that will be discussed has a working

A very simple three-channel RGB color music on LEDs does not contain scarce or expensive components. All elements can be found in anyone, even the youngest radio amateur. The operating principle of color music is classic and has become truly

This circuit of a shortwave radio station contains only three transistors. The simplest walkie talkie for beginner radio amateurs. The design was taken from an old magazine, but it has not lost a bit of its relevance.

Greetings, dear friends! In this article I will show and tell you how to make a very simple tester for testing radio components such as diodes, transistors, capacitors, LEDs, incandescent lamps, inductors and much more.

In this article, I will tell you how to make a tester out of a smartphone to test electrical circuits for open circuits or short circuits. In fact, I will make an attachment for a cell phone (more likely even an adapter with probes), with the help of which

It's no secret that beginning radio amateurs don't always have expensive measuring equipment at hand. For example, an oscilloscope, which even on the Chinese market, the cheapest model costs about several thousand. Sometimes an oscilloscope is needed for

I'd say it's just a super simple amp that contains all four elements and puts out 40 watts of power into two channels! 4 parts and 40 W x 2 power output Karl! This is a godsend for car enthusiasts, since the amplifier is powered by 12 Volts, full

One of the simplest circuits in amateur radio electronics is an LED flasher on a single transistor. Its production can be done by any beginner who has a minimum soldering kit and half an hour of time.

The simplest infrared sensor, which will report the presence of an obstacle, can be made using just one transistor. This homemade product does not have a practical application, but rather a theoretical one, demonstrating the operation of an infrared presence sensor

The most surprising thing is that the battery charge level indicator circuit does not contain any transistors, microcircuits, or zener diodes. Only LEDs and resistors connected in such a way as to provide an indication of the supply level

A very simple flasher can be assembled using the NE555 chip, which is quite common among radio amateurs. The circuit contains a small number of elements and allows you to control one or two LEDs.

I tried to insert into the title of this article all the advantages of this scheme, which we will consider, and naturally I did not quite succeed. So let's now look at all the advantages in order. The main advantage of the charger

Almost every novice radio amateur assembled a multivibrator using transistors. This circuit does not require a large number of components and has a principle of operation that is quite understandable for beginners. However, the work of the finished product, despite its simplicity,

There may be a need to monitor the presence of current flowing in a circuit in two states: either present or not.Example: you are charging a battery with a built-in charging controller, connected to a power source, but how to control the process? Of course you can