Intro Electrical Engineering Voltage Regulator

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A voltage regulator circuit is needed to maintain a constant output of 5V from a variable input of 8 to 10V, accommodating a load current of 0 to 100 mA. The design can utilize ideal Zener diodes and allows for any resistor values. A schematic diagram should be included, detailing each component's specifications. Additionally, it is crucial to calculate the maximum power dissipation for each component in the circuit. Guidance and resources are requested to assist in completing the design efficiently.
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I need to design a voltage regulator circuit to provide a constant voltage of 5V to a load from a variable supply voltage. The load current carries from 0 to 100 mA and the source voltage varies from 8 to 10 V. You may assume that ideal Zener diodes are available. Resistors of any value can be specified. Draw a diagram and specify the value of each component. Find the worse case (maximum) power dissipated in each component of your regulator.

I'm completely lost and I have very little time to finish this. Thanks in advance for any help that you can give.
 
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