How do diodes work in an AC circuit?

Answer 1

Diodes conduct only when forward biased and restrict the flow of charges when reverse biased.

Since AC periodically reverses its direction, diodes only conduct when they are forward biased; in other words, they insulate during half of the cycle and conduct only during half of it.

When rectifying AC into DC, this diode property is utilized. Two or four diodes are used (for a center tap rectifier).

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Answer 2

Benjamin Asiedu

Diodes in an AC circuit allow current to flow in one direction only. During the positive half-cycle of the AC waveform, the diode conducts and allows current to pass through. During the negative half-cycle, the diode blocks current flow. This behavior effectively rectifies the AC signal, converting it into a pulsating DC signal.

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.