Every person who does business and works one-on-one with clients should carry a business card with him. A business card containing contact information and initials will help save time when working with a client and show the level of professionalism. To make a card design, you don’t have to go to a printing house and pay money for it. In this article we will tell you how to make a business card on your computer yourself.

Microsoft Word

The functionality of Microsoft Word is not limited to typing and formatting text. Using this program, you can design a business card and print it in a short time. For work we use the Microsoft Word 2013 editor:

1. First, choose the background for the future card. Download a picture from the Internet or use a previously prepared one.
2. Open Word → Insert → Pictures → Insert Picture.
3. Make the necessary proportions. To do this: RMB on the picture → Picture format → Cropping.
   
4. We set the width to 5.3 cm, length to 8.6 cm. If necessary, turn the image over. Going to Layout and Properties → Effects, apply filters to the photo to make the background look more impressive.
   
5. The background is ready, now let's move on to the inscription. We write the necessary information next to the picture.
   
6. After RMB on the background → Wrap text → Behind text → Place the text where needed.
   

In five minutes of work, we get a ready-made basis for a business card.

Online services

Free online services allow you to make a business card using only a browser. We'll talk about the two most popular and easy to use.

Logaster

Logaster occupies a high position in the Russian-language segment of online services. It especially helps those who are just starting their business. Before creating a business card on Logaster, you need to create a logo. The variety of icons and fonts allows you to create very beautiful and interesting logos, on the basis of which business cards are created.

So, let's take a step-by-step look at the process of creating business cards using this service.

1. Create a logo and register on the site.
   To create a logo, you just need to enter the company name and, if required, a slogan. Next, select the logo you like and save.
   
   
2. Select a business card layout and enter your personal information.
   
   
3. Pay for the designs you like to be able to download it
   
4. Download the products and send business cards for printing. In just a few minutes of this entertaining process, you receive high-quality files of magnificent business cards in PDF and PNG formats, ready for printing.

Business card

The online program “Business Card” is also popular. Creating business cards in it occurs as follows.

Important! In addition to text and online editors, business cards are created in graphic programs, such as Paint, Photoshop.

Video instruction

A clear example of how to create a card in the graphics editor Photoshop.

Hi all. I purchased a kit for wireless energy transfer, also called wireless charging, on a Chinese website. Of course, you can assemble this device yourself; there are plenty of wireless charger diagrams on the Internet. But I wanted to purchase a complete device, offered to us as a DIY device. I did not intend to use it as a wireless charger for a mobile phone. But in robotics, I saw clear advantages over wired chargers.

The device you created in robotics can independently assess the battery charge and, if necessary, independently recharge. For example, a robot only needs to approach the charger at an appropriate distance and the charging process will begin. Very convenient, the robot wants to stay in working order and let it take care of itself.

Wireless charging consists of two parts, a receiver and an energy transmitter.
The transmitter supply voltage is twelve volts, while the receiver output is five volts. The stated maximum charging current is six hundred milliamps. There was no additional documentation on the site. After scouring the Internet, I found the following information. The receiver uses a T3168 chip

Unlike the receiver, the energy transmitter is, so to speak, filled with a compound. Accordingly, it was not possible to get to the board. The documentation for the receiver included a response circuit for the transmitter.

But I still got to the board (using a hammer), as it turned out, the circuit is different. There were two microcircuits installed on the board, without any markings. We were able to obtain scant information about the mysterious micro-assemblies on the forums. I found out that these are two powerful transistors switched on in high-frequency generator mode. Subsequently, I found out that you can also buy an open board without filling.

As for the charging current. The wireless charger, as I already said, allows you to charge the battery with a current of up to 600 milliamps. But we will receive this current only in the immediate vicinity between the circuits. The table shows the relationship between distance and current.

I filmed a demonstration of the wireless charger and a number of others. In general, I liked the module. In the future I am going to use a wireless charger in my project.

Content

There are situations when a mobile gadget is almost turned off, but there is no native charger at hand or there is no electricity. Then some knowledge will help solve this problem: a new invention is wireless charging, you can make it yourself. It is easy to use, even if there is no car charger nearby.

Is it possible to make a charger with your own hands?

The answer to this question is yes. Anyone who has a basic understanding of the properties of wires and current can make it. Before you build such a structure with your own hands, you need to make sure that you have all the materials - a diode and copper wire. Any plastic box, for example, a CD disc, can serve as a housing. You will also need transistors (bipolar or any other), preferably field-effect ones - they will make charging the battery faster. All other tools are in each apartment, including glue and scissors.

How wireless charging works

The operating principle of this type of charging is based on induction, the property of a coil to transmit electric current upon contact with a receiver. When connected to any power source, the device becomes a source of perpendicular magnetic field. If you place two coils close to each other, one of them is connected to any power source, the second will receive a voltage of a certain strength and energy for a mobile phone. This effect is possible if these two coils do not touch each other in any way. DIY wireless charging is a reality.

How to charge your phone

Almost anyone can make a portable wireless charger with their own hands, following the instructions. The whole process consists of two parts: making the transmitter (inner part) and the receiver (outer part). The first of them is separate, while the second is installed in the phone. The convenience of this solution is that you can always take the charger with you.

Transmitter device:

1. It is necessary to prepare in advance a frame with a diameter of 7 to 10 cm. Wind about 40 turns of wire around it (exclusively copper, the diameter of which is 0.5 mm), not forgetting to make a tap in the middle after 20 circles. To do this, twist the wire, make a tap and continue winding.
2. Connect a transistor of absolutely any value to the end of the coil and to the tap. If a direct conduction device is used, the polarity must be changed when connecting.
3. Install in a plastic disc box or any other. Close.
4. The device that transmits electricity is ready.

Receiver device:

1. Unlike the transmitter, it has a flat appearance. It consists of 25 turns, and the wire needs to be taken a little thinner, in the range of 0.3-0.4 mm. Gradually the receiver needs to be strengthened with superglue.
2. Separate the contour from the plastic base on which it was wound, using a knife.
3. Connect it through a diode (high-frequency silicon is best) and attach it to the battery on top. A capacitor is used to stabilize the voltage.
4. Connect to the charging connector. In some cases, this can be done directly with the battery, but the battery full sensor will not work.
5. Close the back cover of the mobile phone. The receiving device is ready.

To use the charger, you simply need to place your mobile phone on top of the transmitter. In this case, you need to monitor the sensor on the smartphone screen. There is another circuit for this device using a voltage amplifier and a resistor. Such DIY wireless charging can also revive a mobile phone without electricity, but it is recommended to be used only by experienced craftsmen.

There are no longer any people in the world who do not use mobile phones. One of the disadvantages of a modern smartphone and tablet is poor battery life. That is, one battery charge with active use is enough for 1 day (maximum 2). With such frequent charging of the device, it is no wonder that the power connector will quickly break. To avoid this, you can purchase a wireless charger. But, as a rule, it is quite expensive. What to do if you don't have enough money? Do-it-yourself wireless charging for your phone comes to the rescue.

A little theory

I think there is no point in explaining what wireless phone charging is. After all, this is obvious - this is the most common charger that works wirelessly. But the question of how it works will be very interesting. Therefore, it is worth diving a little into the theory and the initial course of physics.

The technology is based on the use of induction coils. They can work both as a transmitter and as a receiver of inductive energy. That is, in simple terms, one coil is connected to the power supply. It gets excited and creates a magnetic field around itself. The second coil, falling within the range of this magnetic field, also begins to be excited and generate an electric charge.

Everything is quite simple and clear. From the above, it becomes clear that a wireless charger does not allow you to walk around with your phone in your hands while charging. That is, the restrictions that exist in wired chargers also apply to wireless chargers.

Moreover, the wire can be quite long (up to 5 meters) and you can easily move within this radius. But the magnetic field generated by the inductive coil, as a rule, does not exceed 5 cm. Therefore, the only advantage of such a device is that you will not break the microUSB connector itself.

And here it is a rather controversial question whether the idea is worth it. In principle, replacing the microUSB connector in your phone is quite easy and cheap. And if it is of high quality, it will last quite a long time.

Therefore, purchasing or manufacturing a wireless charger just for the purpose of saving money will not be profitable. Another question is if everything depends on aesthetics or reluctance to constantly deal with wires: then let’s get down to action. Essentially, wireless charging for Android is just a convenient stand for your phone that looks attractive and charges the battery at the same time.

From theory to practice

First of all, it is worth noting that we will have to not only make a base station, but also change the smartphone itself. The fact is that if the phone does not initially support wireless charging, then this indicates that it is not equipped with an inductive coil. And in that case, we will have to make it ourselves and place it in the smartphone case. And the contacts from the receiver coil will have to be soldered to the “+” and “-” inputs of the microUSB connector in the phone body.

In principle, absolutely anyone can make wireless storage. The main thing in this matter is strict compliance with all the rules. The manufacturing process itself can be divided into two parts:

• transmitter manufacturing;
• production of the receiver.

So, from words to deeds.

What do we need

Of course, to assemble such a device, you will need certain materials. Everything is quite simple here. For the transmitter we need the following:

• Frame 5 cm (maximum 7 cm).
• Copper wire with a diameter of 1 mm (25 turns).
• Transistor – field-effect IRF Z44.
• Capacitor – 10n.
• Resistor – 10 Ohm.
• Resistor – 1K (2 pieces).

That's all you need for the transmitter. Finding all these materials will not be difficult. The repeater will be powered by the most common mobile charger.

In order for the phone to receive electric current from the transmitter, we need to assemble a receiver. To do this you will need:

• Diode VD1 M4.
• Capacitor – 10n (nF).
• Capacitor 100n.
• Capacitor 10u (10mF).
• Voltage stabilizer 7805 (5V).
• The coil will require 0.4mm wire (30 turns).

So let's put it all together.

Assembling the transmitter

Everything is quite simple here. There is a generator and a transmitting circuit (the same coil). The generator is powered by a conventional 5V 2A power supply and transmits pulses to a transmitting circuit, which creates a magnetic field of a certain frequency. For radio amateurs with experience, assembling such a device will not be difficult. A diagram will be attached below.

So, in order to wind the coil, we need a frame with a diameter of 5 cm. Copper wire with a cross-section of 1 mm (it is important that it is varnish insulated). We take a copper wire, leave about 3-5 cm at the tip (conditionally this will be a plus).

As a result, you should have a coil in the form of a copper disk.

Set the coil aside until completely dry. In the meantime, let's start assembling the pulse generator. You do everything according to the following scheme:

It is worth noting that dimensions are not so important for the transmitter. You can place the generator with a coil in any housing you want and decorate it however you like. The main thing is that there is a minimum distance between the coils (transmitter and receiver).

Assembling the receiver

It also has its own receiving circuit (coil). It all begins with him. We have already discussed above how to wind a transmission circuit. The receiving circuit is wound in the same way, with the only difference that this time we use a wire with a cross-section of 0.4 mm and make 30 turns (every 5-7 turns, do not forget to coat the circuit with varnish or superglue). Next, the entire circuit is assembled using SMD components (these are the same radio components, but very small in size and surface mounted).

For example, these are the types of SMD capacitors:

We assemble according to the following scheme:

As you can see, nothing complicated. The only question is how best to place all this in the phone body. Here you yourself must show your imagination, since everyone’s case is different.

How it works in assembly

As mentioned above, the whole point is for the generator to transmit pulses to a transmitting circuit, which creates a magnetic field with a certain frequency. The receiving circuit, entering a magnetic field, begins to generate electrical impulses. Signals from the receiving circuit enter the rectifier and voltage stabilizer circuit. As a result, the output produces a stable voltage of 5V (up to 1A). The output from the receiver must be soldered to the pins of the microUSB connector (“+” and “-”).

Here is the pinout of a standard microUSB connector on most smartphones and tablets:

Here we are interested in the black and red pins. It is to them that you need to solder the output from the receiver circuit. Next, assemble the smartphone, connect the transmitting circuit to the power supply network and bring the phone (the receiver circuit is already assembled inside) to the base station (within which the transmitting circuit is assembled). The closer you bring it, the higher the voltage will be, and accordingly, the current will increase.

Disadvantages of homemade BZU

The main disadvantage is that such a charger does not allow you to use the phone while charging. That is, you will not be able to move the gadget further than 5 cm from the WZU (wireless charger).

You will also have to disassemble your smartphone or tablet yourself and add a circuit with a coil, albeit a small one, to the case. Of course, it goes without saying that after such actions there can be no question of any guarantee. And there is a risk that you will simply damage the device.

Another disadvantage is that such generators and transmission circuits create fairly strong magnetic fields (albeit with a short range), which can interfere with the power supply or for speaker systems (if they are located near speakers or an audio amplifier).

In addition, such homemade devices have a rather low level of efficiency (efficiency factor). That is, the charging speed will be quite low, while the electricity consumption will remain the same (even a little higher).

Is it worth making such a device? It's a matter of personal preference. If you are driven by curiosity and a thirst for experimentation, then it is quite possible to do everything with an old phone that you no longer mind. If you need savings, aesthetics and convenience, then it is better to use a regular charger or buy phones that already support a charger from the factory.

Sometimes the chargers used by gadgets fail. There are people who are interested in trying everything themselves. As a result, homemade phone chargers are born.

Reasons for making your own charger

How to charge your phone? This question does not concern many people, but only until they are faced with problems that can lie in wait for everyone.

So, why might we need to create a phone charger?

• The phone battery fails until you purchase a new one.
• The ability to recharge your phone where there is no network.
• Possibility of creating a spare charger.

The easiest way to resolve the question is how to make a portable phone charger using batteries.

Making portable charging

How to charge a phone if you have batteries, a compartment for them, for them or an old mobile phone and a USB extension cord?

Batteries must be AA type. In addition, a soldering iron and tester should be available.

We take 4 batteries (preferably large capacity) and insert them into the battery compartment. We measure the voltage with a tester, it should be at least 5 volts. This is due to the fact that modern phones can be charged from a USB connector, in which the voltage is 5 V.

From a USB extension cable that you don’t mind using, cut off the plug that connects to the computer. We study the pinout of the contacts, call the tester. We find + and -, remove the remaining wires with wire cutters and insulate them.

We put a thermal casing on the wires and treat it with a lighter to ensure a tight entry. We try on the place where the plug is attached.

We will need to solder the wires to the metal rivets. For this purpose, soldering acid is used, which can be applied with a tin stick, after which we tin the rivets.

We solder the wires according to their charge.

The connector must be glued to the body, having first degreased or scraped off the connector and plastic with a knife.

Apply heated glue to the body and press. Apply glue around it, closing the open contacts. The remaining unnecessary wires are bitten off and covered with glue. If necessary, it can be masked using a marker.

We insert the batteries. They must be of the same capacity. Moreover, their total capacity must exceed that of a telephone battery.

Making a charging cable

After making the charger itself, the question “How to make a charger for your phone?” cannot be removed because the cable still needs to be made.

We cut off the small connector of the USB cable; the length of the cable should be half a meter.

We cut the wires in the same way. + and - have already been identified, there is no need to repeat them. We bite off the remaining wires, then place them in a thermal casing, strip them, and tin them.

Batteries can be charged in different places intended for them. In most cases, you can also use cell phone chargers.

You don’t have to complicate your life and charge your batteries in appropriate chargers.

Checking the charging

We insert the charged batteries into the booster, to which we connect the USB cable on one side, and connect it to the phone with the other side and check the charging.

After some time, the voltage on the booster may drop, so it is better to use batteries with a larger capacity.

Thus, we figured out how to make a phone charger with your own hands.

Wireless charger

Extension cords may stop charging the phone, they may become frayed, and the charging socket on the phone may become loose. All this necessitates wireless charging. Let's look at how to make wireless charging for your phone below.

The principle of wireless charging is based on the fact that a coil is built into the charger, which creates a magnetic field; under the cover of the phone there is another coil that serves as a receiver. When the receiver is in range of the conductor, electromagnetic pulses are activated. The phone battery is affected through rectifiers and capacitors.

But before you make your choice in favor of wireless charging, you need to consider that it has a number of negative qualities:

• there is no reliable data on the effect on the human body;
• energy transmission is ineffective;
• full battery charge is restored over a longer period of time compared to wired charging;
• The operating capacity of the battery may be reduced;
• If the battery is not installed correctly, the battery may overheat, which will lead to premature wear.

Let's figure out how to make wireless charging for your phone.

To do this, you need several meters of thin copper wire. We wind the conductor into a coil with a number of turns equal to 15. To maintain the shape, secure the spiral with double-sided tape or glue. Leave a few centimeters of wire for soldering. The connection to the charging socket is made using a capacitor and a pulse diode, which are attached to opposite ends.

The size of one turn on the conductor should be 1.5 cm. After twisting, the diameter of the resulting coil is 10 cm.

To form the transmitter, an even thinner copper wire of 30 turns is used. The circuit is closed by a capacitor and a transistor. We place this device in the area of ​​the transmitting ring with the display facing up.

Finally

Thus, the question of how to charge your phone has several answers. Charging can be portable from batteries, or it can be wireless. In any case, it should be done by a person who understands electricity, otherwise you may run into problems.