Question
Which of the following devices or circuits changes an alternating current into a varying direct current signal?
Answer Options
- A) Transformer
- B) Rectifier
- C) Amplifier
- D) Reflector
Correct Answer: B
Explanation
The device or circuit that performs the function of converting an Alternating Current (AC) input signal into a Direct Current (DC) output is the Rectifier. Rectification is typically accomplished using one or more diodes (T6B02).
The output of a simple rectifier is often a pulsing, or varying, DC signal (containing a ripple). This varying DC must then be smoothed out by a filter (T6D08) and stabilized by a regulator (T6D05) to produce the smooth, constant DC voltage required by a radio.
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