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DiscoverCircuits.com -- Hobby Corner
Last Updated on:
Tuesday, June 01, 2021 03:06 PM
Hobby Circuits List
The contents &
graphics of Discovercircuits.com are copyright protected.
LINK to Dave's circuit, but DO NOT COPY any files to your WEB
SITE server |
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More
Solar Circuits |
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Improved Solar Path Light Circuit
designed
by David Johnson, P.E.
March 13, 2011 |
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The
circuit below was designed
to replace the guts of an existing path light assembly
with one which has a much better performance. I suggest using a quality 10
cell solar panel with at least a 4 square inch area. Buy a panel with solar panels
that fills nearly the whole panel area with solar cells. |
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The circuit uses an ideal diode and voltage regulator to charge either a lithium
ion or a 3 cell NiMH
battery. The circuit drives a quality LED with 20ma of
constant current and measures the voltage across the solar panel to know when to
turn off the LED during daylight hours. I strongly recommend using a quality
white LED from Cree or some other reputable source. |
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5v
100ma Solar Panel |
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Click on Circuit Below to view PDF of Schematic |
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