Power supplies

Visit the website of the author of this publication. On this site, schemes and sketches of the printed circuit boards of devices are attached to each publication. This book is a continuation of the thematic publications of the series "Radio Amateur".

Nowadays, we are increasingly using devices powered by various batteries. Sealed helium batteries (6 and 12V) are often used in uninterruptible power supplies,

Hello to all the inhabitants of our sites. Many hams know that a power supply is an expensive part of all electronics and often it’s not possible to get a good power supply, but every beginner

This small project began with the fact that I got a board and a transformer from an uninterruptible power supply unit. There were several burned tracks in it, as it turned out later, there was a short circuit from

The voltmeter and ammeter circuits are practically no different from those recommended by the manufacturers of this microcircuit. A feature is compact performance. Voltmeter. The first version of the device

For the manufacture of power supply units for power amplifiers, low-frequency 50 Hz transformers are usually used. They are reliable, do not create RF interference and are relatively simple to manufacture. But there is

You can make a charger yourself from a regular computer power supply. What properties it will have: voltage, the battery will be 14 V, but the charging current will be

Portable chargers have been very popular lately. This is due to the increase in the number of wearable devices, as well as their need for everyday life. To each

Homemade stand-alone charger or 5 volt battery booster to charge a mobile device. There are times when such a recharging device is extremely necessary, it

The increase in the number and popularity of wearable devices makes our life easier. But what if the charge of the smartphone or tablet runs out at the most inconvenient time? The answer is simple: you just need to have

The laboratory power supply unit (BP) for the ham radio is an essential device! Have to work with different devices or their elements. Accordingly, there is a wide range of consumers.

How to make a full-fledged power supply yourself with a regulated voltage range of 2.5-24 volts, it’s very simple, everyone can repeat without having amateur radio experience. We will do

A simple compact charger for NiMH and NiCd batteries with additional useful features such as automatic shutdown and temperature control. Almost all have a USB port

Nowadays, bags have become integral accessories of urban style. It is in the bags that we put all of our gadgets, documents and other trifles. However, you can modify this accessory by adding it