PSpice Application Notes

PSpice App Note_Using PSpice to Simulate the Discharge Behavior of Common Batteries

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APPLICATION NOTE 6 Figure 3:NICD battery discharge models Using the Discharge Models To use the battery models in a simulation, add the required number of cells to the circuit file, and pass the appropriate parameters to the subcircuit model. The manufacturers' data sheets may be consulted for information on the cell parameters shown in Table 1. Table 1 Cell Parameters Cell Model Parameter Meaning ALKALINE CAPACITY Capacity of the cell measured at greater than 100 hour discharge time RESISTANCE Initial cell resistance in ohms 9V ALKALINE No parameters are needed for a generic 9 Volt Alkaline battery NICKELCADMIUM CAPACITY Amp-hour capacity of cell measured at the C/5 rate RESISTANCE Mid-discharge cell resistance in ohms CELLTEMP 1 Initial cell temperature at start of simulation VOLUME 1 Volume of cell in cubic inches WT 1 The weight of the cell in grams NICKEL METAL HYDRIDE CAPACITY Amp-hour capacity of cell measured at the C/5 rate RESISTANCE Mid-discharge cell resistance in ohms

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