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A 100:1 voltage divider is required in order to create a 200vdc full scale range for a basic measurement system with 2 vdc full
A 100:1 voltage divider is required in order to create a 200vdc full scale range for a basic measurement system with 2 vdc full scale input. The voltage divider is illustrated in figure 1. Figure 1 The input voltage range of V expected is 1 vdc to 200vdc when using this divider. The nominal resistor values(at 25 C) are R = 990 kohm, R = 10 kohm. The resistor specifications are: nominal tolerance: 0.2% temperature coefficient: 100 ppm/"C max voltage coefficient: -25ppm/volt (typical) a. What is the maximum variation in the voltage transfer ratio V/V due only to the initial tolerance? Give the minimum and maximum values. b. What is the maximum variation in the voltage transfer ratio V/V over the temperature range of 0C -50 C, relative to the initial 25 C value, due solely to the temperature variation? Give the minimum and maximum values. c. What is the maximum variation in the voltage transfer ratio V/V, due solely to V variation over the range 1 vdc -200 vdc? Give the minimum and maximum values. d. What is the maximum variation in the voltage transfer ratio V/V, due to any possible combination of voltage input, initial tolerance, and temperature? Give the minimum and maximum values.
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