johansenng

Hi, sorry but i am new in this. This is a Freescale SRB ZigBee node schematic design. 1)Can anyone help me identify what is the use of the 10K ohm resistor (R115) used? Seems that there is some advantages and disadvantages of using it. The source is a connector from USB_power and feed to 2 diodes before going to a voltage regulator. 2)Why is two capacitor (C116 & C117) used in this case instead of one? Is this an 'extra safe' design? Where can i find more information about such designing tips used? Thanks!