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  • Cheap Voltage Regulated Joule Thief power supply/charger

    hello. i want to make a rechargeable circuit . The requirements are that it could be able to have a regulated voltage from 3-30 V in order to power up different type of devices and current is variable also. Plus, must be able to perform a overcharge protection at the same time not to spoil the battery .. Can you suggest me how do i start and all the requirements or maybe video for referrence pls ?

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