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Image text transcribed for accessibility: Let IF, IM, and IT be defined as the DC average currents corresponding to fast, medium and trickle charging rates for the 42-volt battery. As an approximation, assume that the battery voltage remains constant at 42 volts at all times. Use the CVDT for the diode. The selector switch can be positioned to provide the desired charging rate. Find RF, RM and RT to obtain IF = 400 mA, IM = 40 mA, IT = 4 mA, respectively.
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