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laptop DC power switchover unit for mains or solar PV plus 12V LVD low voltage disconnect repurposed to drive NiMH battery charger as dump load 1 DHD.jpg
D=2010-07-18 [Jul 18, 2010]; S=5MB, 4000x3000; T=JPEG image [MIME:image/jpeg].
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laptop DC power switchover unit for mains or solar PV plus 12V LVD low voltage disconnect plus optoisolator sensors and USB digital input board constructed on stripboard and in transparent plastic boxes closeup 1 DHD.jpg (Mechanoids)

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diagram circuit schematic of improved DC supply voltage detector for automatic laptop power switchover between 12V DC 12VDC solar battery and 240V AC 240VAC mains fallback 1 DHD.gif (Mechanoids)

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