Electronics. Page 17

High-voltage technology is a special direction in electronics, which has its own unique spirit, aesthetics and features. Thousands of enthusiasts around the world are building designs ranging from simple multipliers to huge Van generators.

Tritium is a radioactive isotope of hydrogen that is used to make luminous key fobs. According to the stated characteristics from the manufacturers, such a keychain will last for 10 years or more (on average, about 15). Tritium itself has minimal

When using a homemade DVB-T/T2 antenna in the form of a looped coaxial cable, the signal quality may be insufficient. To amplify it, a balun made from the same cable is installed in front of the antenna.

When a three-phase asynchronous motor is connected to a 220V network, its power is lost; in addition, it does not start without a phase shift. To compensate for the difference between 380V and 220V, electric motors are connected using

The declared resource of LED light bulbs from most manufacturers is greatly overestimated, so they have to be changed more often than we would like. Basically, they fail due to the burnout of one of the LEDs, which causes the electrical circuit inside them

An active indicator screwdriver (with a battery inside) is much more functional than a passive one, since in addition to searching for a phase, it can determine hidden wiring in the wall, the location of a wire break in the cable, and the integrity of incandescent light bulbs, fuses, and diodes.

Motors from radio-controlled children's cars have a fairly low armature rotation speed, so they are of little use. If they are upgraded using the proposed method, they will be able to rotate the propeller with sufficient speed to

Electric cars are gaining more and more popularity because they are much cheaper to maintain, but their cost is really high. If leaving a couple of thousand for gas at a gas station every time doesn’t suit you, but you don’t have money for a Tesla, then you can

When connecting a three-phase electric motor to a 220V network, it is necessary to ensure a phase shift so that it begins to rotate. This can be done by connecting a starting capacitor or a regular incandescent light bulb.

When purchasing an electrical wire, it may turn out that its actual core cross-section is less than the declared one. This must be determined in advance before electrical installation, since such a core will not reach the required rated current. It's easy to do when you have it at hand

A very simple light level indicator without transistors, without microcircuits and without a board can be quickly assembled in a couple of minutes. It does not require additional power and is powered by the sound of the amplifier. Connects directly to the speaker. Such an indicator

The remote control for a TV, air conditioner or other household appliances begins to malfunction after a couple of years. At first, in order for the buttons to work, you need to press them with all your might, but over time, this does not help. If something like this happens, it’s not worth it

To place a power supply, switch, speed controller or other electrical equipment, a box made of dielectric material is required. It can be made from an ordinary PVC sewer pipe, and it will look almost like a store-bought one.

For most people, a homemade generator is associated with a converted electric motor. In fact, it can be done differently, literally from scratch. Moreover, it is absolutely not difficult, fast and inexpensive.

Sometimes you have to perform one-time repair work, for which purchasing a specialized tool is impractical. In such situations, you can make do with homemade devices made from scrap materials.

Many people have old DVD movie theaters sitting idle at home. No one has been buying CDs for them for a long time and, in fact, the equipment is lying around idle. Most of these home theaters include powerful and high-quality acoustics with

From a regular syringe, magnets and enameled wire, you can assemble a compact hand-held generator for emergency lighting. The device generates electricity by shaking. This is quite a useful homemade product that is worth making even in

It is very simple and easy to make a funny flashing light from several parts, and even powered directly from an alternating current network of 220 Volts. The three LEDs will flash vigorously and create an unusual lighting effect.

As a drive for various homemade products, you may need a compact high-speed DC electric motor.If you have a thin enameled wire and two small magnets, it is easy to make with your own hands. He can do it perfectly

To visualize the operation of an electromagnetic mass accelerator, you can assemble a looped track for rolling a steel ball endlessly in a circle, with 4 electromagnetic coils serving as pushers. Operating principle of the track

To get a high voltage converter from a low 3.7 V power supply, all you need is one transistor, one resistor and a roll of thin enameled wire. This is a very simple, inexpensive and easy to assemble circuit,

Every radio amateur must assemble an audio power amplifier at least once in his life. In this example, just such a sample with a power of 500 W is presented. This model is assembled quickly, literally in 1 hour. Amplifier class - AB, analogue

One day, for one of my projects I needed a powerful mosfet. A large current of about 500 Amperes had to be switched. And then the idea came to mind to make a separate transistor, modular, composite.

Nowadays Powerbank is quite a necessary device. I've been collecting a Powerbank in a tissue box for a long time. The capacity was decent, but the casing burst. I took it on a hike and pressed it in my backpack. I decided to use the components in another design. Was lying with me