You found yourself in a dacha in complete isolation and do not know what is happening in the world. There is an old transistor radio in the shed, you really want to make it talk, but there are no batteries at hand. But in the country, there are probably many other things from which you can design the simplest batteries.
It is necessary
- - Lemon
- - Glass or shot glass
- - Copper and iron pins
- - 2 pieces of installation wire in insulation
- - 2 wooden sticks
- - 2 push pins
- - Drill
- - Soldering iron
- - Knife
Instructions
Step 1
Cut the lemon in half. It will give the acid necessary for the current source. It is recommended to cut crosswise. Secure the lemon in a glass or glass so that it does not roll on the table.
Step 2
Stick copper and iron pins into the lemon pulp at a distance of 0.5 - 1 cm. They will serve as electrodes in the battery. The negative electrode is iron, the positive electrode is copper. This must be taken into account when you will connect the battery, for example, to a radio or a camera.
Step 3
Solder the pieces of wire to the pins. If the device to which you are making a battery has an external input for a power source, you can connect the resulting battery to the device using this connector, having previously selected the required number of cells. The elements must be connected in series using wires and soldering.
Step 4
If the device does not have an external connector, take 2 wooden sticks, cut them to the shape and size of the batteries that you usually use. Drill them all the way through so you can thread the wires from the battery. The easiest way to make the contacts is from metal clerical pins, to which the halters are soldered, after which the buttons are fixed on the ends of the sticks.
Step 5
Insert the sticks into the battery compartment observing the polarity. Press contacts to the contact group. In this case, the container must remain open during the operation of the device.
Step 6
The disadvantage of a "lemon" battery is that it provides little current. In order to build a more powerful device, you need a few lemons and a few pieces of wire. But you can rummage in the barn and find other things that can also be used to make a power source. Try to make the simplest Leclanche type galvanic cell. In this case, pairs of electrodes can be pairs of zinc-copper and aluminum-copper plates. The larger their area, the better. Solder the wires to the electrodes. If you have an aluminum plate, the wire will have to be wound or riveted to it. You will also need the most common glass glasses. Immerse a pair of electrodes in a glass so that they do not touch each other. You can put a plastic or wooden spacer between them. Prepare a solution for 100 g of water - 50 g of ammonia (ammonium chloride), or 20% sulfuric acid solution. The acid must be poured into the water, not the other way around. Carefully pour the solution into the container with the electrodes so that at least 2 cm of dry space remains to the edge of the container and to the top of the electrodes. One such element gives an initial voltage of 1, 3-1, 4V. By connecting the cells into a battery, you can get a powerful source of current, sufficient to power your mobile device. In this case, it is best to supply power through the external connector (through which the mobile phone is usually charged). Pay close attention to the polarity of the connection.
