1. Onye na - ewuli elu nwere electromagnet nwere isi ígwè na - ebugharị ụzọ n'etiti okporo osisi abụọ nke ndọta na - adịgide adịgide. Mgbe ọ dịghị ugbu a na coil nke electromagnet, na-adọta mkpuchi ígwè nke usoro magnetik abụọ nke ndọta magneti na-adịgide adịgide ma ọ bụ ebe dị n'etiti; Mgbe a na-ebugharị dị ugbu a site na coil, a na-ebugharị Iron ígwè na-ebugharị ma ghọọ magnet magnet. Na mgbanwe nke uzo a, polarity nke magnet magnet na-agbanwe nke ọma, nke mere na a na-ebugharị ígwè na-ebugharị ya, na contever na-echegharị (cone cone) iji mee ka ikuku ghara ịdị.

2. Ọkà okwu eletrik ọ bụ ọkà okwu na-eji ike electrostatic tinye na efere capactor. N'ihe banyere ihe owuwu ya, a na-akpọkwa ya onye na-ekwu okwu nchekwa na nchekwa na elektrọsọ dị mma na-adịghị na ibe ha. A na-eji ihe abụọ dị elu ma sie ike, nke nwere ike ibufee ụda site na efere, na ihe dị ka diaphragms (dịka diamunom diaphragms). Idozi ma mechie diaphragm ma debe nnukwu anya site na ogwe edozi. Ọbụna na nnukwu diaphragm, ọ gaghị ekpokọta ya na osisi edoziri.
3. Piezoactric na-ekwu okwu ọkà okwu na-eji PIEZOLETRICICRACK ihe a na-akpọ piazoelectric. A na-ekewa ndị na-eme ihe nkiri (dị ka Qielayz, potassium sodium na-emebi emebi na krima ndị ọzọ) Mmetụta ya na-adịghị ahụkebe, ya bụ, nrụpụta na-agbanwe agbanwe nke dielectric n'ọhịa eletrik, a na-akpọ ya "ma ọ bụ" electrosTrocosicosicosictic ".