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Amateur Extra Class (Element 4) • 2024-2028

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Question E7D15

From subelement E7 - E7D

E7D15
Answer: D

What is the purpose of a step-start circuit in a high-voltage power supply?

ATo provide a dual-voltage output for reduced power applications
BTo compensate for variations of the incoming line voltage
CTo prevent arcing across the input power switch or relay contacts
DTo allow the filter capacitors to charge gradually