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SESK: Stuff Everyone Should Know · sesk.info/ham-voltage-regulator-circuit

What type of circuit controls the amount of voltage from a power supply?

A regulator controls how much voltage a power supply puts out.

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  1. An oscillator
  2. A filter
  3. A regulator ✔

Why: A voltage regulator holds the supply's output steady even when the input or the load changes. Radios need steady voltage to work properly.

Huh, didn't know that: Voltage regulators are available as integrated circuits for compact power supplies.

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The voltage regulator is the strict parent of the power supply. No spikes after bedtime.
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References

Answer: A regulator. A voltage regulator holds the supply's output steady even when the input or the load changes. Radios need steady voltage to work properly.

  1. NCVEC 2026-2030 Technician Question Pool (Feb 19, 2026 errata) ncvec.org/downloads/2026-2030%20Technician%20Pool%20and%20Syllabus%20Public%20Release%20Feb%2019%202026.pdf
    T6D05 (A) What type of circuit controls the amount of voltage from a power supply? A. Regulator
    Checked 2026-10-09.

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