Electronics. Page 31

Agree, it is very convenient when there is a USB socket for charging gadgets next to a regular outlet. There is no need to charge the main outlet. Nowadays, almost all portable equipment is charged from USB ports and this is a big plus, since there is no need

How to charge a cell phone using a candle? It’s very simple - for this you can assemble a simple thermal power plant from just a few very affordable elements. This little thing is pretty cool, you can take it with you on a hike or fishing trip.

This master class will be a little controversial and will cause more than one disparate opinion. I want to share how to make a powerful rectifier from a microwave oven transformer - a power supply for the voltage I need. Very often microwaves

The history of hydropower begins with a simple water wheel, which our ancestors came up with the idea of ​​installing on the rapids of a river. At first it was used for the mill, thereby facilitating the work of the millstones. Later people learned to use force

There are various instructions on the Internet for turning an old (sometimes partially non-working) TV into a widescreen oscilloscope. This article will also tell you how to create a decent electronic device using a simple modification of the general

Clean energy derived from natural resources is one of the most popular topics today. Imagine that you have a generator at your dacha or country house that supplies all the resources of your household with free electricity. This

Most radio amateurs, including me, have encountered the problem of leaving a multimeter turned on for a while and forgetting about it, which ultimately leads to frequent replacement of the crown due to low discharge. In this case, solve this

There are quite a few varieties of budget amplifiers and this is one of them. The circuit is very simple and contains only one microcircuit, several resistors and capacitors. The characteristics of the amplifier are quite serious, with such insignificant

I'll show you a way to make an LED light up without connecting wires to it.To do this, you will need to assemble a simple device using a single transistor. And you can prank your friends by showing them your magical abilities.

I suggest making a really useful homemade product - kitchen cabinet lighting. Just imagine, you open the cutlery drawer and the light comes on. It's very beautiful and unusual. Such lighting can be equipped in any place, be it

This is a good and inexpensive way to make an adjustable power supply without much expense or effort. For example, I have a good power supply of 12 V and 2 A. I will assemble an attachment for it, with which I can regulate the voltage in

You only need two components to build a simple inverter that converts 12V DC to 220V AC. Absolutely no expensive or scarce elements or parts. Everything can be assembled in 5 minutes! You don't even need to solder! Twisted

Over many years of amateur radio activity, I have encountered different situations. For example, you need a slightly more powerful transistor than is available. Getting out of this situation is not very difficult. It is enough to add a radiator to such a transistor and

In this master class I will show you 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 enough to warm your hands.The mini heater is very

It’s very simple to make devices for drilling circuit boards without using purchased cartridges or other parts. Over the course of my time, I have drilled hundreds of holes in homemade circuit boards with this motor drill. The time spent making this

In everyday life, people often use gadgets (smartphones, tablets, etc.), but when we go somewhere, we constantly need to charge our phone. This problem will be solved by a Power Bank that can be made in an hour and a half from

Most Soviet and foreign radio amateurs are very familiar with the analog integrated timer SE555/NE555 (KR1006), produced by Signetics Corporation since the distant 1971. It is difficult to list for what purposes it is not

When it is necessary to protect an object, people come up with different methods of protection. They hang padlocks, put code locks, put up howler bells. I decided to make my contribution to such devices. More precisely, I came up with an actuator. They, in turn, can include

This tutorial will show you how you can get 5V USB from a 9V battery and use it to charge your mobile phone. The photo shows the assembled circuit in action, but this is not the final version, since I will also make a housing for it at the end.

I want to share with you my example of how I made a simple keyboard backlight for my favorite computer.This backlight does not shine into the eyes and has electronic brightness adjustment. It can be connected either to the power supply itself

Country and country life is full of unexpected surprises. Either the gas would be turned off, or the water would be cut off, and then the electricity suddenly disappeared somewhere. A dull and boring pastime will be brightened up by an autonomous LED lamp, which can be made in

Hello friends, today I will tell you about the circuit of a guitar gadget with the distortion effect. The project is quite simple, I recommend it for beginners in soldering.

This is a very simple attachment circuit for your existing charger. Which will monitor the battery charge voltage and, when the set level is reached, disconnect it from the charger, thereby preventing

Many people probably have a problem with charging a Li-Ion battery without a controller; I had this situation. I received a dead laptop, and there were 4 SANYO UR18650A cans in the battery that were alive. I decided to replace it with an LED flashlight, instead