Alkaline Charger

Make A Simple Alkaline Charger

If you want to save your pocket in the use of alkaline batteries may require a battery charger. Here is alkaline charger that is a quite simple schematic which is specifically designed to charge 1.37V and 9V alkaline battery.

How it Works
Isolation is happening that occurs in an unusual connection transistor in each charging unit will transfer the charge accumulated in the capacitor to the cell. For a cell 1.37V. Orange LED will flash in one second about five times. However, it flashes more quickly if the cell completely empty and will decline to be stopped when the cell is charged. You can leave the cell on the charger because it will trickle charge and keep it at around 1.6V.

A fresh and unused alkaline cell are used to regulate the voltage properly. Make adjustments to the trimmer until oscillations set in, then go back to a little until no oscillation circuit is present and ready to operate. To be aware that you should use only the specified transistors, zener diode voltage, LED colors, and power rating because they will set the final voltage across the cell.

All types of alkaline cells can be recharged with this alkaline charger: it will take one day for a discharged AA cell or 9V battery and up to several days for a large D type cell. The best practice is not to discharge completely the cell or battery but rather to give a short charge every so often although admittedly this is not easy to achieve. Do not attempt to recharge a totally discharged cell or a cell showing even the slightest sign of damage.

Read more about LM317 circuit for making 6V DC Power Supply.