Solar Energy Monitor Electronic Circuits


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Solar Energy Circuits
Last Updated on: Tuesday, April 22, 2008 03:50 PM

Circuits Designed by Dave Johnson, P.E. :

Solar Insulation Monitor: An inexpensive PIN photo diode and a 1ma meter movement form a simple sunlight intensity monitor. The sensor should be placed inside a lightly frosted glass hemisphere to minimize the influence of the sun’s angle on the sensor. An adjustment resistor calibrates the meter for a full scale reading under a one sun condition. An unshielded two conductor cable links the sensor to the meter movement. The sensor and meter can be separated by up to 200 feet.

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Solar Current Meter: (Electronic Schematic / circuit added 4/02)

Solar Panel Charge Controller / Low Voltage Disconnect Circuit: Lead acid charger, with battery voltage monitor, power comes from solar panels (Electronic circuit added 5/02)