Fabrication of the electrolytic rectifier

Fabrication of the electrolytic rectifier. You can easily build an electrolytic charger to charge the battery, which, admittedly, works worse than semiconductor rectifiers, but urgently needed, can be useful. For glass or plastic vessels, not softening in temp. ok. 100°C, pour the solution containing 96 g of sodium bicarbonate (incorrectly called sodium bicarbonate or, commonly, baking soda) w 1000 cm3 of water. Immerse a plate made of possibly thick aluminum sheet in it, and at a distance of approx 2 cm second plate, made of lead or steel sheet. Lead the wires to the upper parts of the plates, the connectors must not come into contact with the solution. Connections with the transformer and the battery should be made according to the drawing.
electrolytic rectifier
The charger heats up during operation, so you have to stop charging from time to time and wait, until the device has cooled down. The larger the surface of the plates, the higher the charging current can be and the slower it is for the charger to heat up. With an area of ​​approx 1 dm3, you can set the charging current to 2. "3 A. It is admittedly possible to design a device cooled by the flow of water, but it is unprofitable, if such a rectifier is considered as a temporary solution.