To charge the heating battery, a charger is used, which can be purchased in a retail network or made by hand, spending a minimum of money and time.
Necessary
Half liter glass jar, aluminum and lead plate, rubber tube, lid with a hole in the middle
Instructions
Step 1
Take a glass or half-liter glass jar, aluminum and lead plates 40x100 mm in size and a rubber tube 2 cm in diameter. Cut a 2 cm long ring from the rubber tube, pull it over the aluminum plate, to the electrolyte level. This is necessary, since during the operation of the rectifier, the electrolyte strongly corrodes aluminum at the very surface of the solution. Rubber protects it from corrosion and thus allows the rectifier to work much longer.
Step 2
Use sodium bicarbonate (baking soda) as the electrolyte. Take soda at the rate of 5-7 grams. per 100 ml of water. In this rectifier, the positive pole will be aluminum, the negative pole will be lead. When the device is connected to a normal city AC network with a lead plate, current will flow through the rectifier. But it will only go in one direction. At this time, there will always be a positive voltage pole on the aluminum plate. If the aluminum plate is connected to the network, then there will be a negative voltage pole on the lead plate. The result is a half-wave rectifier, because only one half-cycle electric current passes through it. In the first case, for example, only a positive current will flow through the device.
Step 3
Full-wave rectifiers are used to fully utilize the voltage. They need to be composed of two or four elements, depending on the current required for charging. And they are connected to both phases of the power supply. When connecting the device to the AC power supply, use fuses. Adjustment of the voltage supplied for charging can be done using a rheostat, which will allow "extinguish" excess voltage in the circuit and, accordingly, create normal conditions for charging the battery.
