555 storage battery protector circuit with stable voltage charging circuit

Published:2011/6/13 23:24:00 Author:nelly | Keyword: storage battery, protector, stable voltage, charging circuit | From:SeekIC

As shown in the figure 10-22, the protector circuit is composed of two three-terminal voltage stablizing units and two 555, it includes charge protection and discharge protection. It has the functions of overcharge protection, steady voltage charge, over-discharge protection and short circuit protection. The charge protection circuit is made of IC1(555)and 7812, 7815 three-terminal regulators. 7812 provides 555 circuit with stable +12V voltage. When it is just charging, the storage battery is charged by J1-1 normally-closed contact.



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