�y��vlog

Its two wings are powered separately by tiny pieces of ceramic piezoelectric material, which expand and contract rapidly when wired to an alternating voltage.

Thus, if an external alternating voltage were applied, the large molecule would act as a rectifier.

I want to wait until you have seen what the crystal does when an alternating voltage is applied to it.

An induction coil in an alternating circuit for changing potential difference, such as high alternating voltage into low direct current voltage.