Lidl Parkside Cordless 20V Battery Light & USB

$2 for 5PCBs - order with coupon code: JLCPCBcom
Any questions about JLCPCB or ordering, pls email support@jlcpcb.com

What's inside this cordless power tool USB adaptor with light? Why does it have both a linear 5V regulator and a switched mode 5V regulator? Why is there a 1k resistor betewwn D+ and D-?

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Datasheets:
http://estmicro.com/e_productshow/?143-IC-AP2962-SO8-EP-AC-DC-143.html
http://kiloohm.info/eia96-resistor/01B

Видео Lidl Parkside Cordless 20V Battery Light & USB канала Julian Ilett