The conversation between human and AI assistant.
How was AC converted to DC before diodes were invented?
Yes, please do.
Sure, so the commutator is made up of metal bars that are arranged in a circle. The AC current enters through two brushes that contact opposite sides of the commutator, and as the commutator rotates, the brushes switch from one bar to the next, reversing the current direction. This produces a pulsating DC output that can be smoothed out with a capacitor or other filter.