Electronics

Here you can clearly see how an ordinary electric current flows through an ordinary sausage. By the way, the sausage didn’t suffer after the experiment, but on the contrary it became delicious and hot :-)

The amplifier assembled on a TDA7262 chip, the power in the stereo version is 35 watts, and in mono 80 watts. Here is the assembled amplifier of the Scheme: a stereo version of the bridge version The case was bought in a radio store, the transformer took a cooler and radiator from an old computer from a broken music center. Everything is assembled. Photo of the amplifier during operation. Rear view. If you have questions, ask.

Multivibrator. The first scheme is the simplest multivibrator. Despite its simplicity, its scope is very wide. No electronic device can do without it. The first figure shows its circuit diagram. LEDs are used as a load. When the multivibrator is working, the LEDs switch.

For a decent quality of soldering work, a home foreman, and even more so a ham radio, a simple and convenient temperature regulator for the tip of a soldering iron is useful. For the first time, I saw a device diagram in the magazine Young Technician in the early 80's, and having collected several copies, I still use them. To assemble the device you will need: - 1N4007 diode or any other, with a permissible current of 1A and a voltage of 400 - 600V.

Video cameras, like cars, have now ceased to be luxury goods and have moved into the category of necessary devices. But, if the camcorder itself was manufactured efficiently and its failure without any external reasons is an infrequent phenomenon, then with the power supplies to them everything is just the opposite - they “burn” with enviable constancy.

I propose a simple radio microphone circuit with a range of up to 30 meters. The signal can be received on the radio (cell phone, player or on a regular, etc.) If everything is assembled correctly works without settings. The circuit uses only one transistor of the kt315 series (the store costs no more than 5 rubles) any microphone will do, I used the XF-180.

"I blinded you from what it was ..." :) No one came across a situation where a smartphone swearing abusively at a low battery, and the lights turned off as luck would have it? I think many. Or the same story with your favorite netbook, which has 12 volts power? Or do you need an autonomous light source that is as independent as possible from the presence or absence of voltage in the network?

Sometimes it becomes necessary to make a big noise for the TV and radio range. For example, your wife watches "Do not be born beautiful," and you need to see the Champions League. For this purpose, special devices are used - "Radio silencers" or according to the national "Pig". They are distinguished by a small radius of action (50-100 meters) and good ability to jam the signal.

This simple device can come in handy when fishing, camping, etc. places. With it, you can charge a mobile phone, mp3 player, flashlight, etc. a lightweight, compact wind generator will become your assistant ... We will need: - An old scanner; - Rectifying diodes (8 diodes 1N4007 were used in the project); - Capacitor 1000 uF; - LM7805; - PVC pipe; - Plastic parts (see

Hello dear ladies and gentlemen! On this page, I will briefly tell you about how to remake the power supply of a personal computer with my own hands into a charger for car (and not only) batteries. The charger for car batteries should have the following property: the maximum voltage supplied to the battery is not more than 14.

Solar battery is a device for converting the energy of the sun into electricity. The high performance solar panels that you can buy at Radio Shack and other stores are made of specially treated silicon and require huge factories, high temperatures, special cleaning and lots of money.

Although the economy lamp, depending on the manufacturer, there is a guarantee, and even up to 3 years. But consumers may face the fact that the light bulb has blown out, but your packaging is not preserved, your purchase receipt, the store has moved to another place, that is, for some reason beyond your control, you cannot exchange a broken item.

Disco strobe with amazing police flasher effect! Compared with xenon, LED is more durable and unpretentious. It can also be used for a car. To build our strobe, we need a k561la7 chip. Well, and the rest of the details. Everything is clear from the diagram: (to increase, click) R1 - R3 - 1 MOm R4, R5, R6 - 2 kOm R7 - R10 - 100 Om C1, C4 - 10 μF C2, C3 - 0.25 μF VD - any T1 - ct 315 T2 - kt817 Any zener diode for stabilization voltage 6 ... 9 volt switch - any LEDs - any super bright.

Good day! Today I want to bring to your attention the Laboratory Power Supply (LBP). I think every amateur radio enthusiast has encountered the problem of obtaining the necessary voltage for one or another of his homemade products, because each device requires a different voltage. I also faced such a problem the other day.

One of the simplest devices is the hidden wiring detector, presented below. Resistor R 1 is needed to protect the K561LA7 chip from increased static electricity, but, as practice has shown, it can be omitted. An antenna is a piece of ordinary copper wire of any thickness.

We bring to your attention two miniature soldering irons, the most affordable in manufacturing and satisfying the requirements for the installation of miniature electronic products. The first design, shown in Figure 1, is intended for mounting transistors and microcircuits on printed circuit boards. The power of the soldering iron is about 7 watts.

It was evening, there was nothing. Climbing the Internet, I came across this device: And I really wanted it, but as it turned out later it is not sold in our city. Well, they don’t sell, then we’ll make it. It all started with the fact that the Logitech S100 speakers were bought, I took them apart and threw out everything unnecessary: ​​a transformer, shortened the wires. Next, with the help of Plexiglass and pistol glue, an amplifier cover was made Not too neat, but invisibly.

In the economy of the radio constructor, there will always be old diodes and transistors from radio receivers and televisions that have become unnecessary. In skillful hands, this is wealth that can be effectively used. For example, to make a solar battery with your own hands to power a transistor radio receiver in traveling conditions.

In connection with the big scam, to introduce thoughts into the consciousness of the need to install energy-saving lamps in your home, many began to massively put them at home. But soon you are surprised to notice that the durability of such lamps is a maximum of half a year, the brightness and temperature of the light do not stand up to criticism, and the price, even for non-branded energy-saving lamps, is 10 times higher than for ordinary incandescent lamps.

Since high-pressure lamps DRL 250 have a rather long service life and high efficiency compared to incandescent lamps, they are successfully used to illuminate summer cottages, the courtyard of a private house, and sometimes even garages inside. For years they have proven their reliability, quality of lighting, and all this for a small amount.