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Both controlled and uncontrolled rectifiers convert alternating current (AC) to direct current (DC). They share similar circuit configurations, often utilizing diodes or thyristors for the conversion process. Additionally, both types are used in various applications, such as power supplies and motor drives. However, the key difference lies in the ability of controlled rectifiers to regulate output voltage and current through control signals, whereas uncontrolled rectifiers provide a fixed output based solely on the input AC waveform.

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