Electronics

To control the operation of the engine and other powerful consumers, a starter is needed. Why is he needed? Firstly, in order to be able to display the control buttons anywhere you want. The use of automatic machines limits this zone, since power wires must be drawn through the automatic machine, and increasing their length is both expensive and not always convenient.

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Built by an American craftsman, the projectile departure speed is 110km / h. ! There is a laser sight and a digital charge indicator. Shop for 14 ammunition. Killer thing! The capacitance of the capacitors is 8800 uF (4x2200) and a voltage of 400 volts. Capacitor charge speed up to 300 volts: 8 seconds when powered by the mains and 90 seconds when powered by an internal source.

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Jacob's ladder - two electrodes are located, located as in the figure. It is most likely the most beautiful application of an electric arc :))) And it works like this: an arc appears in the lower part of the electrodes, the air around it heats up and rises, the arc also rises and goes out, then the process repeats.

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Often, when I was shopping in consumer electronics stores, I noticed such a device as a humidifier and never saw a dehumidifier. Someone will now say - in almost any air conditioner there is such a function as an air dryer. In everyone, but not in everyone. But not everyone can always afford air conditioning.

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We proceed to the assembly of the mechanical part of the generator. Details of the generator are shown below. All of them are made of steel. For the ring, a tape made of transformer steel was used, but you can do with a steel sleeve. Pass the wire from the coil into the hole in the base. Having fixed the nut on the axis, we pull the package from the corner, the round base plate, the coil and the cross-shaped magnetic circuit with another nut.

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I did a photo shoot of my little windmill or, as I call it, an acting model. Since I built it unexpectedly for myself, I just decided to practice and find out what works, then at first I didn’t take pictures, I didn’t think that they might be interested, the photo session turned out in the opposite order, i.e.

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A cooler windmill is more of a toy than a real one. It produces 1.5 - 2 volts with a breeze of 4 km / h and a current of 20 mA, which is enough to charge one battery. But you can do more than one, so there is still a prospect ... And so let's go! Take a standard cooler from a computer: We need to disassemble it and connect the wiring directly to the coils and remove the Hall sensor, similar to a transistor with 4 outputs, we do not need it.

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The eternal flashlight or Faraday's flashlight is the so-called flashlight with an alternative power source. That is, this flashlight does not require batteries or battery charging. To "ignite" it is necessary to shake it. In the flashlight itself is a generator and battery. Let's first get acquainted with the factory lamp: I tried to paint the design as much as possible.

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A little bit of theory. A single element of a thermoelectric module (TEM) is a thermocouple consisting of two dissimilar elements with p- and n-type conductivity. Elements are interconnected using a patch plate made of copper. Semiconductors based on bismuth, tellurium, antimony and selenium are traditionally used as the material of elements.

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Kacher Brovina is a demonstration invention, very similar to the Tesla coil, but made in a completely different way. The kacher generates a voltage of the order of 1000 thousand volts, can light fluorescent lamps and gases in flasks, it also releases sparks and can be played with, since the voltage frequency reaches 250 Hz and current flows through the skin of a person.

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Sometimes in the dark it’s hard to find the switch. To facilitate this work, I propose to incorporate a backlight into it. We will need three radio components and a little time ... Sometimes in the dark it’s hard to find the switch. To facilitate this work, I propose to incorporate a backlight into it. The LED VD1 acts as a light source, connected to the circuit breaker terminals via resistor R1.

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Here we will upgrade the miniature flashlight pen. There was an incandescent light bulb. This flashlight showed a significant decrease in the brightness of the glow of the incandescent lamp when the batteries were seated. And of course, low efficiency and durability. But we will fix it. Light-emitting diode! - Here is the solution to our problems.

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I decided to use a small ionization chamber with a current amplifier built on a composite transistor as a sensor. But when I connected the base of the composite transistor directly to the sensor wire, the collector current was practically absent. I expected to see some leakage current due to the floating base and tens of thousands gain.

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Miniature devices for passing exams CONTENTS Small-sized transceiver for exams We make a miniature earphone with our own hands Wireless earphone for taking exams-1 Wireless earphone for taking exams-2 Wireless micro-earphone on a chip Wireless micro-earphone for hidden wearing This transmitter-receiver is one of my first developments.

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This is a simple laser light effect for a disco, outdoor advertising, as well as at home, in a cafe ... The thing is very simple and everything can be seen from the attached picture. Mirrors (smaller than a centimeter), everything else is attached to a bent wand from the designer on plasticine, chewing gum, glue ... The batteries last for several hours.

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The model is based entirely on the Hillary Eldridge patent, USA 603 058 “Electrical Retort” presented April 26, 1898. Combustible gas is produced by an electric arc produced by graphite rods immersed in distilled, drinking, saline or other type of water, which essentially consists of hydrogen, oxygen, carbon and other substances.

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Many have heard of the plasma ball, but not everyone wants to spend money on it. Radio amateurs know that you can make it yourself. Alas, for beginners, amateur radio circuits on the Internet are quite complicated and incomprehensible. This article will help make a plasma ball even for those who hold a soldering iron for the second time in their lives.

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Hello! Today I received another package from China, which contained this universal temperature controller, which I had previously ordered. I especially liked this model, as it has obvious advantages over other Chinese models, which I need as a craftsman. Well, in fact, let's move on to the pluses: - first, this is a larger and brighter character display, the numbers of which are quite clearly distinguishable even from a long distance.

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Hello friends. The other day I came here is such a thing called Wi-Fi USB antenna. Here in such a box. In a nutshell, this is the same USB Wi-Fi adapter for a computer, only with a directional antenna and wire. Description. But compared to a conventional USB Wi-Fi module or adapter, this device has significantly increased transmitter power and receiver sensitivity.

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Hello. Today I will tell you about the regulator (thermostat) for domestic use. This is a complete device, nor any board that still needs to be powered with something and know how to connect. Therefore, any person can cope with it, without knowledge of electronics, by watching this video or by reading the instructions that come with the kit.

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