🔍 Key Concepts

• Behavior of a full-wave rectifier with an AC input signal • Relationship between input frequency and ripple frequency after full-wave rectification • Meaning of the emission designator A2 (A-2) in radio communications

💭 Think About

• What happens to the negative half-cycles of a 500 Hz AC signal in a full-wave rectifier, and how does that affect the frequency of the resulting waveform? • Is the output of an unfiltered full-wave rectifier a pure continuous wave, or does it contain a particular kind of modulation/ripple? • How does the definition of A-2 emission relate to a CW carrier that is amplitude-modulated by an audio tone (like 500 Hz)?

✅ Before You Answer

• Verify whether a full-wave rectifier produces an output at the same frequency as the input or at twice the input frequency. • Confirm what A-2 specifically describes in terms of modulation type (continuous wave with tone-modulated telegraphy). • Check if all listed options can be simultaneously true, or if some are mutually exclusive based on how emission types are formally defined.