Advice 1: How to charge a magnet

The magnet eventually loses its properties. In addition, it can be demagnetized by heating. Of course, it is easier to buy a new magnet, but, if you cannot find the product the desired shape, you can try to charge it.
How to charge a magnet
You will need
  • - powerful magnet;
  • - low magnet;
  • - wire of PEV;
  • - thin copper conductor;
  • - fuse Meringue;
  • network 220;
  • the high - voltage battery or battery pack;
  • - capacitor.
If you want to restore the magnet temporarily, place it near a powerful current permanent magnet, paying attention to polarity. Leave the design for a month or two, and then assess the state of charge of the products – you will see that it began to work better. Thus it is possible to magnetize any metal object, such as a screwdriver, but its properties will disappear pretty quickly.
If you want to charge the magnet more thoroughly, collect the installation from the coil and magnet. To do this, wind the reel in coils of 50-200 (its size must exceed the core sizes by 30-40%) of the copper wires and place inside the magnet. Note that between the wire and the magnet should be insulator – to-air, paper, duct tape or other material, not conductive current. If the magnet is already polarity, Orient it in the coil the right way, you can use an ordinary compass.
Take a capacitor with a capacity of at least 5000 UF and charge it from the mains. Then connect the terminals to the coil (via the switch) and press the button to discharge it. Formed inside field to charge the magnet. Instead of the capacitor you can use regular batteries or rechargeable batteries with a voltage of 5-12 volts.
To charge or restore the properties of the magnet, is made industrially, use voltage of 220 V. For this to wind through the insulating layer coil of copper wire, the size 400-600 turns.
Take the fuse with a maximum current of 1-1. 5 amperes, it can be a thin copper conductor with a thickness not exceeding 0,05 mm or the Bose fuse in a glass tube (it is more safe, as rasplava wire remains within the tube).
Take a normal network plug wires and connect consistently to the coil and fuse. Turn the unit to the network, the fuse will burn, but the electromagnetic field formed inside the coil will magnetize the metal.
Be very careful during the last way, as you will be working with deadly voltage. Remove from the room of women, children and animals, and themselves stay away from the installation, as sparks of hot metal flying from the fuse, can get into eyes and skin.

Advice 2: How to charge ordinary batteries

Is it possible to charge ordinary batteries, that they have served some time? The answer is simple: you can, and make it easy enough. However, some methods can be dangerous.
How to charge ordinary batteries
To recharge ordinary batteries, can be used as charger and handy tools. It is important to know how to do it correctly. There is an opinion: if batteries are good to knock on the wall, they will last another couple of hours. And indeed it is. But there are other interesting and proven ways.

The conventional methods of charging batteries at home

Charge batteries at home, in the following way. With batteries you need to remove the wrapper, and then in the body done a few holes. This can be done with an awl or a Gypsy with a needle. Prepared for charging the batteries fall in a pot of well-salted water. Then the pot is put on the gas, and the batteries boil for a short time. Then you need the batteries removed from the water, dry, wrap well with electrical tape. So, as a result of the process of the battery charged and ready for a new job.

It is also possible to charge ordinary batteries with an awl. So, awl is required to make two holes all elements of the supply near the graphite rod. The depth of the puncture should take about ¾ of the height of the batteries. In the hole you need to drop either water or a 10% solution of hydrochloric acid, either double vinegar. After the liquid dripped to the top, the holes are sealed well with a slice of rye bread or clay. Ordinary batteries charged so that can serve for some time.

The methods of charging ordinary batteries by using special devices

Today there is a special device (device), for example, Battery Wizard, which can fully charge ordinary batteries up to 10 times or more. Many people consider it quite a bargain, which will allow in the future to save a decent amount of money.

You can charge regular batteries using a special charger. Batteries should be placed in the device and put on charge. As soon as the batteries are a bit warmer, they must be immediately removed. If the battery overheats, becomes hot, the charger may come in unsuitability, fire, or the battery to explode. Try, warmed up the batteries or not, just by hand.

Of course, to resort to the assistant drugs and Amateur experiments possible, but very carefully and very rarely, if the situation requires it. It is best to use special devices to charge conventional batteries or buy new batteries.
Is the advice useful?