There is often a need to produce more than one voltage using a voltage divider. For exampl...

There is often a need to produce more than one voltage using a voltage divider. For example, the memory components of many personal computers require voltages of -12 V, 5 V, and +12 V, all with respect to a common reference terminal. Select the values of R1, R2, and R3 in the circuit in Fig. 1 to meet the following design requirements:

a) The total power supplied to the divider circuit by the 24 V source is 80 W when the divider is unloaded.

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b) The three voltages, all measured with respect to the common reference terminal, are v1 = 12 V, v2= 5 V, and v3 = -12 V.

Figure 1