4-level LED lamp display power, not working state intelligent automatic shutdown;
The built-in lithium battery protection IC, over-current, overpressure, under-voltage protection;
Dual USB output ports.
Power Bank Module
https://quartzcomponents.com –
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MB10F Bridge Rectifier
https://components101.com –
The MB10F is a surface mount glass passivated bridge rectifier from diodes incorporated with a low voltage drop of 1.1V and a forward continuous current of 800mA. It has high efficiency and a high surge current capability of 30A.
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MT3608 - 2A DC-DC Step Up (Boost) Power Module
https://components101.com –
The MT3608 power module is a step-up(Boost) converter module intended for small and low-power applications.
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Battery Monitor Circuit
http://circuitdigest.com –
here we have developed this battery monitor circuit to test the battery charging status. In this circuit we can easily test batteries by connecting it with the circuit. Here some LEDs are used for showing battery status.
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How to design power supply circuit
http://www.homemade-circuits.com –
Whether it's an electronic noob or an expert engineer, all require this indispensable piece of equipment called the power supply unit. This is because no electronics can run without power, to be precise a low voltage DC power, and a power supply unit is a device which is specifically meant for fulfilling this purpose.
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