The component labeled 'CR1' in the circuit shown in the illustration serves what functional purpose? EL-0085
Official USCG Answer & Rule Citation
Correct Answer: Option A — it establishes a constant reference voltage for the base of 'Q1'
Component CR1 functions as a Zener diode, establishing a steady, reliable reference voltage for the base of series-pass transistor Q1 to maintain constant regulated output voltage.
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