Ko te pūoko pēhanga kaha he mea tito mai i ngā wahi e rua e neke ana (te diaphragm whakarewa rapa), ngā wahi pumau e rua (te paninga whakarewa i runga i te karāhe kōpiko i runga i te diaphragm rapa o runga me raro), ngā pito putanga me te whare, me ētahi atu. E rua ngā pūnga raupapa ka hangaia i waenganui i te pereti neke me ngā pereti pumau e rua. Ina pā te pēhanga whakauru ki te diaphragm rapa, ka puta he nekehanga mai i te diaphragm rapa, ka herea ki te whakaiti i te tawhiti me te wahi pumau kotahi, ka whakanui i te tawhiti me te wahi pumau kē atu (ka taea te whakaatu mā te pepa). Ko te tawhiti i waenganui i ngā irahiko whakarewa e rua tētahi o ngā mea nui e pā ana ki te kaha, ka piki te tawhiti, ka heke te kaha, ka heke te tawhiti, ka piki te kaha. Ka kiia tēnei momo hanganga he hanganga rerekē, kei reira ngā tawhā o ngā huānga pūoko e rua ka whakarerekētia e te nui ōrite engari he rerekē nā te nui i inehia.
Mena ka whakanohoia te diaphragm rapa i waenganui i te pēhanga taha me te pēhanga hauātea (ko te kōhao o runga o te diaphragm rapa he hauātea), ko te pēhanga i inehia ko te tēpu; Mena ka whakanohoia te diaphragm rapa i waenganui i te pēhanga taha me te korehau (ka haere te kōhao o runga o te diaphragm rapa i roto i te korehau), ka inehia te pēhanga tino. Ko te kaha o te pūnga he rite ki te dielectric me tōna horahanga whai hua i waenganui i ngā pereti e rua o te pūnga, ā, he rite whakamuri ki te tawhiti i waenganui i ngā pereti e rua, arā, C=ε A/D, ko ε te pūmau dielectric o te dielectric, ko A te horahanga whai hua i waenganui i ngā irahiko whakarewa e rua, ko D te tawhiti i waenganui i ngā irahiko whakarewa e rua. Mai i tēnei whanaungatanga, ka kitea ina kore e rerekē ngā tawhā e rua, ā, ka whakamahia te tawhā kē atu hei taurangi, ka rerekē te kaha me te tawhā e huri ana.
He maha ngā momo ara iahiko ine e whakamahia ana me te pūoko pēhanga capacitive. Me tango te ara iahiko piriti hei tauira hei whakaatu i te kaupapa mahi o te ara iahiko ine rerekētanga capacitance. Nā te mea he tawhā AC te capacitance, ka whakaohokia te piriti e te AC mā te whakawhiti hiko. Ko te whakawhiti hiko e rua ngā koiri me te capacitance o te piriti, ina kore he pēhanga tomo, he piriti kei te taurite, ā, e rua ngā uara capacitance he rite ki te C0, ina he pānga pēhanga, ko tētahi o te uara capacitance o C0 + delta C, ko tētahi atu uara capacitance o C0 – delta, C (delta C mō te pēhanga o waho i puta mai i te rerekētanga o te capacitance), he piriti kei waho o te taurite. Ina teitei te uara capacitance, he teitei hoki te ngaohiko, ā, ka puta he rerekētanga ngaohiko i waenga i ngā capacitors e rua, mai i reira ka whakaputahia e te piriti he putanga ngaohiko U e tohu ana i te pēhanga tomo.
Wā tuku: Hepetema-02-2022