Project Description

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Project description
This circuit has been designed to work on a DC Grid. It has a wide input voltage range (9-36VDC) with a stable 5VDC 1A output. It utilises a TPS2511 charging control IC to allow all types of portable USB devices to be charged due to its configuration to dynamically change the voltages on the data pins. The measurement circuit measures voltages and currents. The PIC is programmed to listen for a message from the host PC, when the PIC recognised the requested measurement it then returns it. The ZIgbee is used within a mesh network where the host PC controls the PC's Zigbee using an application I programmed in C#. Overall testing of this circuit shows that the following USB devices charge: - Apple iPod Touch - Apple iPad (intermittent at times) - Samsung Galaxy Nexus - Asus Nexus 7
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Design Files

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Component (21)
Qty
Description
Resistor

R2

1
Generic Resistor (1k)
Voltage Source

V1

1
DC BUS (9-36V)
Resistor

R5

1
Generic Resistor (22k)
Capacitor

C2

1
Generic Capacitor (1pF)

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