Electronics. Page 16

This flasher circuit has a number of very significant advantages. Firstly, it is simplicity, and secondly, power: the switched current can be up to 50 A, which is clearly not small. Thirdly: the circuit is connected to the llama circuit break and does not require additional power. AND

This key, built on powerful field-effect transistors, is designed to control the load by pressing a clock button: one press - turn on, press again - turn off. Maximum voltage - 60 V, maximum current - 50 A.

Very often in electronic circuits, in addition to a series (limiting) resistor in the LED circuit, a parallel (shunt) resistor is also added. A similar shunt resistor can also be seen in switching power supplies,

With this simple circuit you can control a DC motor with just two buttons.Each of which serves to turn the engine in one direction or another. The device is capable of controlling a powerful motor, but the button contacts are not

They asked me to figure out how to charge the batteries of a screwdriver. I wanted to make 3-channel charging on the TP4056, but I still have two of them left. After studying the question, I realized it could be made simpler. The old charger was assembled as a block

Every home probably has more than one power supply (charger) from various cell phone models lying around. All of them have an output voltage of 5 V. Naturally, it is possible to use such a source in the household, but sometimes there are not as many purposes as there are in

Sometimes it is necessary for a lamp to smoothly flare up and go out, or for an electric motor to start smoothly and stop smoothly. For DC loads, such a device can be made very simply with just one transistor. This will be a powerful key

This is the simplest induction hob design you can imagine. No controllers or microcircuits. The circuit contains only 2 transistors and a few other elements. The circuit is mounted mounted without a board. Great for

Using this electronic regulator, you can smoothly adjust the brightness of an LED strip or incandescent lamp, and regulate the speed of rotation of the electric motor shaft.Buttons are used for control, no variable resistors or microcircuits

Infrared radiation does not heat the air, but the surrounding objects. In this regard, the parts of the body placed under it immediately feel warm. Purchased heaters are quite large, so if you need a compact device, then you can only

Energy-saving fluorescent lamps are becoming a thing of the past and are being successfully replaced by LED lamps. Let's disassemble such a lamp and take out the board from it; there are many useful radio elements that will serve successfully. The flask itself must be taken to

Due to the advent of small-sized, cheap voltmeters in our time, it has become possible to independently manufacture various instruments, devices, probes in order to monitor different quantities. Based on such a voltmeter, you can independently

Who among us has not dreamed of taking a metal detector with us and going to ancient ruins to look for antiques. All this is very interesting and entertaining. It’s a pity that modern Chinese metal detectors are quite expensive, despite their small

To control a multi-colored LED strip, you don’t necessarily need an expensive programmable controller or a device with a complex circuit. Just three transistors are enough to make an RGB strip shimmer in different colors.No chips

Surely you have this tangle of chargers for various cell phone models in one of your closets at home. They are all working and therefore it is simply a pity to throw them away... The chargers can be put into use and turned into useful devices. Here are two

Making a very powerful LED strobe light is quite simple; all you need is one transistor, a capacitor and a resistor. Yes, it won’t be difficult to find just three elements. Such a scheme can be done even by those who are absolutely vaguely familiar with

Let's imagine a common problem: you need to find reinforcement in a wall, but you don't have a metal detector at hand. No matter how impossible it may seem, you can make a metal detector for such purposes yourself in just 5 minutes, without exaggeration. basis

You only need 5 parts to assemble this simple power regulator. And regulate, say, the heat and temperature of your soldering iron. This device can have many purposes. It works great with heating appliances and

This voltmeter is capable of measuring DC voltage from 0 to 30 V. Its peculiarity is that it does not require additional power and operates directly from the measured voltage. Always ready to work, has minimal size and weight.

This is truly the simplest flasher, which gives a simply stunning lighting effect in total. Take and use any number of LEDs and they will all blink differently. On the eve of the holiday, decorate with such a lighting installation

Do you think it’s not realistic to make a full-fledged metal detector in 5 minutes? Now your ideas will be destroyed. Surely almost everyone has a Chinese multimeter at home, not necessarily like the one in the photo, any similar one will do. So, on

Such devices that turn on or off lighting or other loads at a distance usually consist of a photodetector and an emitting diode operating in the infrared range and usually consist of two parts, the control board itself with

DVD and CD drives are gradually becoming obsolete, regardless of where they are installed: be it a computer or a DVD player. An era is passing, but a pile of iron remains idle. Now I will present to your attention 4 useful homemade products,

A very simple metal detector can be assembled with just two transistors. Such a device is quite suitable for quickly searching for metal objects at shallow depths. The entire circuit together with the coil can be assembled in just 30 minutes.