|Photo of an assembled SPC3 kit.||SPC3 wiring diagram|
The SPC3 can be used as a stand-alone solar powered lighting system controller for a one room building or RV/camper. The SPC3 can also be used to power other 12V loads such as radios, communication equipment, small TVs, recording equipment, fans, cameras and more. The SPC3 can be installed in both stationary and mobile environments. The SPC3 should not be used for powering devices with high surge currents such as large motors or high powered car stereos.
The SPC3 charge controller section includes: a battery float voltage adjustment, a red/green Charge/Float state indicator LED and battery equalize terminals for occasional overcharging. A temperature sensor is included so that solar battery charging is temperature compensated.
The SPC3 load controller section includes: a momentary action on/off switch for turning the load on and off, two bright white LEDs for a built-in light source, a low battery indicator LED that warns of impending shutoff and a low voltage disconnect circuit that disconnects the load when the battery discharges below a specified voltage.
See the SPC3 specifications for more detailed information on the circuit.
The SPC3 Photo Gallery shows some real-world uses of the SPC3.
Combine the SPC3 with a solar panel, rechargeable battery and external lights or other load devices for a reliable source of DC power that's available, even when the power company is not.
The SPC3 kit makes a great student project, it can be used as the foundation for many science and electronics projects.
The kit includes: