Question

The no-load voltage in the voltage-divider circuit shown in Fig. $P 3.15$ is $20 \mathrm{V}$. The smallest load resistor that is ever connected to the divider is $48 \mathrm{k} \Omega$. When the divider is loaded, $v_{o}$ is not to drop below $16 \mathrm{V}$. a) Design the divider circuit to meet the specifications just mentioned. Specify the numerical value of $R_{1}$ and $R_{2}$. b) Assume the power ratings of commercially available resistors are $1 / 16,1 / 8,1 / 4,1,$ and $2 \mathrm{W}.$ What power rating would you specify?

          The no-load voltage in the voltage-divider circuit shown in Fig. $P 3.15$ is $20 \mathrm{V}$. The smallest load resistor that is ever connected to the divider is $48 \mathrm{k} \Omega$. When the divider is loaded, $v_{o}$ is not to drop below $16 \mathrm{V}$.
a) Design the divider circuit to meet the specifications just mentioned. Specify the numerical value of $R_{1}$ and $R_{2}$.
b) Assume the power ratings of commercially available resistors are $1 / 16,1 / 8,1 / 4,1,$ and $2 \mathrm{W}.$ What power rating would you specify?

Added by Sarah R.

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