The battery protector with voltage charging circuit composed of 555

Published:2011/8/4 20:32:00 Author:Rebekka | Keyword: battery protector , voltage charging circuit | From:SeekIC

Discharge protection circuit consists of IC2 (555) and BG2, BG3, BG4 and so on. When the battery discharges to 10.5V, the regulators DW1, DW4 are regulatedto make BG2, BG4 stop. IC2 is reset becausepin ②, ⑥ are in high level; pin③ outputs low so BG3 stops. The release of relay J2 and the contact of J2-2 off (down) achieve the discharge protection. When the battery voltage is greater than 11.5V, IC2 sets, BG3 conducts, J2 pulls in, the load starts to work. When a load short circuit occurs, IC2 resets because pin ④ isin a low level. J2 releases. The short-circuit protection works.



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