Operating Voltage (volts) Operating 5000mA 5000mA 80mA Amperage (milliamps) Operating -20 to 60 -20 to 60 -20 to 60 Temperature (degree Celsius) 105 64 180 Consumption (mill watts) Color 4000 to 4000 to 4500 4000 to 4500 Temperature 4500 (kelvin) (Lumens) 360 360 360 Table 3.1.1a 4.1.2 Power Supply The power supply as a whole is what will run the Solar Powered Flower Sculpture. The group wants to power the system using photovoltaic cells, a rechargeable battery, and a microcontroller unit. By placing these in parallel, the photovoltaic cells will absorb the solar rays, which will then be converted into DC electric current. This current will then be split between the rechargeable battery and the microcontroller unit. So that the microcontroller unit does not receive excessive voltage, which would cause damage to the interior unit, a voltage divider network is added between the photovoltaic cells and the microcontroller unit. Also, so as to not completely destroy the photovoltaic cells, due to the reverse current sent out by the rechargeable battery, a diode will be placed right after the photovoltaic cells. The idea to set up the power system in this way was found from a do it yourself website called Simple Solar Circuits and the circuit looks as follows: Figure 14: Circuit Prototype
Operating Voltage (volts) Operating Amperage (milliamps) 5000mA 5000mA 80mA Operating Temperature (degree Celsius) -20 to 60 -20 to 60 -20 to 60 Consumption (mill watts) 105 64 180 Color Temperature (kelvin) 4000 to 4500 4000 to 4500 4000 to 4500 (Lumens) 360 360 360 Table 3.1.1a 4.1.2 Power Supply The power supply as a whole is what will run the Solar Powered Flower Sculpture. The group wants to power the system using photovoltaic cells, a rechargeable battery, and a microcontroller unit. By placing these in parallel, the photovoltaic cells will absorb the solar rays, which will then be converted into DC electric current. This current will then be split between the rechargeable battery and the microcontroller unit. So that the microcontroller unit does not receive excessive voltage, which would cause damage to the interior unit, a voltage divider network is added between the photovoltaic cells and the microcontroller unit. Also, so as to not completely destroy the photovoltaic cells, due to the reverse current sent out by the rechargeable battery, a diode will be placed right after the photovoltaic cells. The idea to set up the power system in this way was found from a do it yourself website called Simple Solar Circuits and the circuit looks as follows: Figure 14: Circuit Prototype
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