A thermocouple is a sensor consisting of two conductive conductors that are different in their properties and soldered together. The measurement occurs due to the formation of a thermal electromotive force (voltage) formed between the conductors. Depending on the

LED flashlight today does not surprise anyone. They can be bought at almost every corner. There are countless varieties of all shapes and sizes in our market. But their characteristics are very different, and sometimes do not correspond

I propose for assembly another electronic device designed to automate human life. It can be described as follows: at a given time it turns on the load, and at a given time it turns off, and the next day the cycle repeats.

Hello! Today I will tell and show you how to connect an electric motor from a modern washing machine to an AC voltage of 220 V. I would like to say right away that such motors do not need a starting capacitor.

Now very often you can find outdated kinescope TVs in the garbage dump, with the development of technology, their packs are not relevant, so now they are mostly disposed of. Perhaps everyone saw on the back wall of such a television an inscription in the spirit of "High

Energy-saving fluorescent lamps are not so durable and gradually fail. Their time is slowly coming to an end and they are being replaced by LED lamps. LED lamps consume significantly less energy, more durable and not

In this article, we will consider the process of creating a very necessary and interesting electronic device that will allow you to play wav format files directly from an SD, microSD or mini SD memory card. You can record a music file to a memory card,

I will show how to make a universal LED illumination of something, whether it be at least the lighting of the working area or the illumination of a bed niche. The LED strip will light automatically when an object is approaching and will also automatically turn off after

Often on sale you can find such devices that are installed on a flower pot and monitor the level of soil moisture, including, if necessary, a pump and watering the plant. Thanks to such a device, it will be possible to safely leave for

Sometimes there is a desire to assemble some kind of electronic device, which is not very complicated, but at the same time very interesting. And if at the same time it also turns out to be useful - in general beauty. Those people who don’t know what to do on a long weekend,

Perhaps even a person far from electronics has heard that there is such an element as a relay. The simplest electromagnetic relay contains an electromagnet, when a voltage is applied to it, the other two contacts are closed. Using relay

Good day, dear readers! Today we will focus on the assembly of a simple low-pass filter. But despite its simplicity, the filter is not inferior in quality to store analogues. So let's get started! Main characteristics: Cutoff frequency 300 Hz,

In our world, quite a lot of people are engaged in home-made experiments in home laboratories and workshops. For some, this is a way to assert themselves, for others, a desire to develop their abilities. And what if it was an experiment from hastily

Who would have thought that the simplest inverter can be made without the use of transistors and complex circuits. Last time I showed how to make an invert without transistors on a relay. As it turned out, this is not the only way to build an inverter. I will show how

Now a lot of digital technology is failing, computers, printers, scanners. Time is like this - the old is replaced by the new. But a failed equipment can still serve, although not all, but its individual parts for sure. For example, in printers and

A useful homemade product that is sure to come in handy almost anywhere where there is USB: Home for backlighting: you can connect at least to a computer, even to a laptop. Camping, fishing or hunting: can be connected to an external battery (power

Agree, it’s very convenient when there is a USB socket for charging gadgets near a regular outlet. There is no need to charge the main outlet. Now almost all portable equipment is charging from USB ports and this is a big plus, since it is not necessary

How to use a candle to charge a cell phone? Very simple - for this you can assemble a simple thermal power plant from just a few very affordable elements. This thing is pretty cool, you can take it with you on a camping trip or fishing and

The history of hydropower originates from a simple water wheel, which it occurred to our ancestors to install on the rapids of a river. At first it was used for a mill, thereby facilitating the work of millstones. People later learned to use force

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

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

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

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