AC07 AC10 Power Rating Determined by load life test 100% load @ 70°C 5.8 W 8.4 W ambient Rated Continuous Working Voltage (RCWR) Maximum Ambient Not Listed Temperature Not Listed Nominal Resistance Range - - 1.6KΩ 15KΩ 620Ω 27KΩ Resistor Tolerance ±5% ±5% Table 3.2-4: Specification for Wire Wound Resistors (Permission Pending) 3.2.3 VOLTAGE DIVIDER/RESISTOR CONCLUSION: The voltage divider circuit discussed above is an essential part of the design plan. The voltage from the solar panels is simply too high to be measured by the microcontroller. The input voltage of the microcontroller is still in question so the value of the resistors that were calculated was just an example of the type of logic that is going to be used when calculating the resistors. The three resistors that were discussed were the carbon composite resistor, the carbon film resistor, and the wire wound resistor. By examining what the data tells us for each resistor a decision can be made about which one to use. The carbon composite resistor fits this application well if a suitable weather proof box can be found to keep moisture from building up on the circuit. The carbon film resistor also fits this application well because of its ability to operate in a wide range of temperature but the cost of using them versus the wire wound resistor makes it unreasonable because of the scale of the project. The wire wound resistors are the most appealing to this design because of the durability,
AC07 AC10 Power Rating Determined by load life test 100% load @ 70°C ambient 5.8 W 8.4 W Rated Continuous Working Voltage (RCWR) Maximum Ambient Temperature Not Listed Not Listed Nominal Resistance Range 1.6KΩ - 15KΩ 620Ω - 27KΩ Resistor Tolerance ±5% ±5% Table 3.2-4: Specification for Wire Wound Resistors (Permission Pending) 3.2.3 VOLTAGE DIVIDER/RESISTOR CONCLUSION: The voltage divider circuit discussed above is an essential part of the design plan. The voltage from the solar panels is simply too high to be measured by the microcontroller. The input voltage of the microcontroller is still in question so the value of the resistors that were calculated was just an example of the type of logic that is going to be used when calculating the resistors. The three resistors that were discussed were the carbon composite resistor, the carbon film resistor, and the wire wound resistor. By examining what the data tells us for each resistor a decision can be made about which one to use. The carbon composite resistor fits this application well if a suitable weather proof box can be found to keep moisture from building up on the circuit. The carbon film resistor also fits this application well because of its ability to operate in a wide range of temperature but the cost of using them versus the wire wound resistor makes it unreasonable because of the scale of the project. The wire wound resistors are the most appealing to this design because of the durability,