Power supplies

Hello! Everyone had this situation: -You are in some place, and you need to urgently call, and the phone is low. Here you will come in handy Power Bank, which will be discussed today. Let's start

How to convert a cordless screwdriver to a network one? The batteries on the screwdriver become unusable after about two years. The engine is still quite working, it's a pity to throw it away. Replacing both

Imagine a small charger that charges itself, just lying in the sun, and indeed in the daytime. It’s convenient to take such a device with you to nature when you go camping,

In this article I will tell you how to assemble a very cheap power bank from any trash that must be found at hand. More precisely, something similar to a power bank but its main function, it

Assembled into one design several simple circuits and blocks. The circuit is very simple and it will not be difficult to solder it even for a beginner soldering iron. Three resistors, a transistor, a diode, a two-color LED. Solder

There are many cases when living outside the city, you may need a small amount of electricity to power a low-power device. For example, to operate a compact weather station,

Good day, dear residents of our site! Today I will tell and show you how to make a universal power supply with my own hands on 5A. To do this, we need: two 10 kΩ resistors

Today, many users have accumulated several working and unused lithium batteries that appear when replacing mobile phones with smartphones. When using batteries in

Before every car owner someday the question arises of how to charge a run down battery. He also appeared in front of me once. And it happened, as always unexpectedly, on a day off, in

When setting up various electronic devices, a power supply unit (PSU) is required, in which there is an adjustment of the output voltage and the ability to control the level of protection against exceeding

There are times when you need to connect a lamp to one outlet and charge the phone at the same time, here is a socket with a built-in usb socket for charging your smartphone. Let's get started.

Hello everybody. Do not rush to throw out the battery of the drill that has expired. Batteries can be replaced by lithium 18650. To do this, you need to purchase a 1- charging unit for 3 batteries at 12.6 volts, 20 A

Rechargeable batteries of the 18650 type are very popular now. They are used in power banks, powerful flashlights, laser pointers, portable speakers and for various homemade products. Sold as with a charger

Everyone has a different rest in their free time. Someone likes to lie on the couch, someone goes to the gym, and the author of this homemade product, based on his needs, abilities and capabilities,