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Home › Magazines › 2005 › June › Solar-Powered Charger

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Solar-Powered Charger

Solar cell lead-acid charger

Published in issue 344, June 2005

Solar-Powered Charger
During the summer months they appear again all over the place: those solar powered garden lights. During the day they store the captured solar energy, which is used at night to provide lighting. If you'd like to use this energy for something different, such as listening to the radio or playing a CD, you'll find this circuit fits the bill.

Components

Relevant products

Resistors:

R1 = 100mOhm (e.g. Digikey # 12FR100OH-ND)

R2 = 82k

R3 = 10k

P1 = 2k5 preset

Capacitors:

C1,C2= 100nF

C3,C4 = 47µF 16V radial

C5 = 47pF

Semiconductors:

D1 = MBR350 (Digikey # MBR350-ND)

IC1 = MAX1771-CPA (Digikey # MAX1771EPA-ND)

T1 = IRFU3708 (Digikey # IRFU3708-ND)

Miscellaneous:

K1,K2 = 2-way PCB terminal bloc, lead pitch 5mm

L1 = 10 H high current (Digikey # M6007-ND)

PCB, ref. 040474-1 from The PCBShop

8 solar cells (e.g., Conrad Electronics # 198056-62)

Click below to download a PDF copy of this article from Elektor magazine.

 

Downloads 
PDF Article (U050646.pdf)
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PCB layout (040474-1.pdf)
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Order from Elektor 
PCB
040474-1
 

Order from Eurocircuits 

PCB
Please note. In view of the complexity of international markets, Elektor cannot guarantee the availability of components for this project.

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