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Battery charging protection circuit composed of the PTC comp

2016-05-10 23:25  
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Battery charging protection circuit composed of the PTC component and the over-voltage protection component
The PTC component and the over-voltage protection component harmonize to complete the following jobs: 1.Supply the current protection for the FET which might be damaged and the battery's excessive current. 2. The PTC limits the over-current which is produced by the forward direction conduction of the Zener diode. 3. Limit the conduction current when the over-voltage component is protecting the voltage overload.