Low voltage DC power charger circuit diagram

This circuit can be used to charge cadmium-nickel batteries and dry batteries after high current use, and can also be used as a general low-voltage DC power supply .

This circuit consists of a charging part and a DC output part. K2 is the fast charge and slow charge selection switch, R2 and R3 are current limiting resistors, which can change the charging current. Usually, fast charging is controlled at about 4 hours, and slow charging is about 14 hours. NA, ZD form the test circuit. Before charging, install the battery to be charged. When you press AN, it is normal for the ZD to have no light or a faint light. When the charging time reaches the requirement, after pressing AN, if the ZD glows for more than 10 seconds, it means that the charge is full and can be used with electrical appliances.