the smart battery charger circuit that using a single transistor

Published:2011/7/14 23:09:00 Author:Fiona | Keyword: the smart battery charger, using a single transistor | From:SeekIC

circuit work First, the variable voltage power supply is fixed at 13.3 V dc - This is battery electricity voltage,and is connected to the battery's connection point of this circuit.The slider of VR1 is transferred to the top of the battery positive electrode. The slider of VR2 should be adjusted to one end connecting VR1. The transistor starts to work to shunt VR1. Then,the slider of VR1 is adjusted to the other side, that is one end of connecting VR2. Now,let the test voltage is 11.8 V dc, which is the voltage when the battery runs out. Then, adjust VR2 so that the transistor no longer work. Test voltage is further increased to 13.3 V dc, adjust VR1 to make transistors work. By setting the upper and lower voltage, NC point is connected to the circuit. A battery charger is ready now.



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