E le sesebelisoa sa mantlha sa ho metha tšebeliso ea matla ka li-circuits tsa AC-mohato o le mong,{1}}limithara tsa motlakase tsa mohato o le mong li kopanya motlakase, methatso ea elektroniki, le mekhoa e nepahetseng ea phetisetso ea mochini. Ka moralo oa sebopeho sa mahlale, ba fihlela tekanyo e nepahetseng ea matla.
Traditional electromechanical single-phase energy metre e sebetsa ho latela molao oa motlakase oa motlakase. Ha khoele ea hona joale le li-voltage coil li fanoa ka mojaro oa hona joale le voltage, ka ho latellana, li hlahisa phallo e fapaneng ea makenete holim'a aluminium turntable. Ho ea ka molao-motheo oa Faraday oa ho kenngoa ha motlakase oa motlakase, ho fetoha ha matla a khoheli ho baka maqhubu a eddy ka har'a turntable. Tšebelisano ea maqhubu a eddy le flux ea makenete e hlahisa torque e khannang, e tsamaisang turntable. Ka nako e ts'oanang, matla a khoheli a sa fetoheng a hlahisoang ke makenete ea braking a phunyeletsa methapo ea matla a khoheli a motsamao oa "turntable", 'me a hlahisa torque ea braking e lekanang le lebelo la ho potoloha. Qetellong, sena se tiisa hore lebelo la turntable le tsamaisana hantle le matla a mojaro. Mochini oa phetisetso ea ligear o fetola lebelo la ho potoloha ha turntable ho ba palo ea mithara, e nolofalletsang tekanyo ea matla a koketsoeng.
Moetso oa sejoale-joale oa elektroniki oa single-phase energy metre o sebelisa hybrid analog-moqapi oa dijithale. Potoloho ea sampling ea voltage e sebelisa marang-rang a resistor divider ho fumana lets'oao le lenyane le lekanang le motlakase oa ho kenya. Sampling ea hajoale e sebelisa manganese{4}}copper shunt kapa transformer ea hajoale ho fetolela leqhubu le leholo hore e be lets'oao le lenyane. Ka mor'a hore motlakase oa analog le matshwao a hona joale a fetoleloe ho boleng ba dijithale ka analog-ho{7}}ho fetolela digital (ADC), microcontroller (MCU) e etsa lipalo tsa nako ea sebele-ho ipapisitse le equation ea motlakase hang-hang (P=UIcosφ) 'me e sebelisa mokhoa oa ho bokella boleng ba matla. Key circuitry e kenyelletsa{11}}mohloli oa litšupiso o nepahetseng ho netefatsa lisampole ho nepahala,{12}sefe e tlaase{12}ho felisa tšitiso e phahameng{13}} le processor ea matshwao a dijithale (DSP) ho ntlafatsa ts'ebetso ea khomphutha.
Matšeliso a phoso ke taba e ka sehloohong ea moralo: potoloho ea matšeliso ea mocheso e lokisa liphello tsa mocheso o itseng ho likarolo tse hanyetsanang, mekhoa ea matšeliso ea mekhahlelo e sebelisoa ho felisa phapang ea tlhaho ea motlakase le mechine ea hona joale ea sampole, 'me ho sebelisoa li-software algorithms ho lokisa-litšobotsi tsa mojaro le ho kheloha ha mola. Anti{2}}moetso oa creep o sebelisa puseletso ea matla a khoheli sebakeng sa motlakase kapa zero ea elektroniki-ho thibela ho lekanya hampe nakong ea{4}}maemo a ho laela.
Ka nts'etsopele ea li-grid tse bohlale, -mohato o mocha oa methara oa motlakase o kopanyang likarolo tsa khokahanyo tse se nang mohala, li-chip encryption chips, le{1}}bokhoni ba ho etsa methara e mengata. Ha a ntse a boloka melao-motheo ea metering, e ntse e tsoela pele ho ea ho ts'ebetso e nepahetseng le e bohlale.