Multimeter mode ea diode (bukana le litaelo tsa tšebeliso)

Diode ke sesebelisoa sa elektronike se lumellang hore hona joale ho phalle ho eona ka tsela e le 'ngoe feela, eseng ka tsela e fapaneng. Hangata li-diode tsa semiconductor li na le molao-motheo o akaretsang oa moralo, e leng semiconductor block ea mofuta oa P e hokahantsoeng le block ea semiconductor ea mofuta oa N mme e hokahane le li-terminals tse peli, e leng anode le cathode.

Potoloho ea rectifier ke potoloho ea elektroniki e nang le likarolo tsa elektroniki tse fetolelang alternating current ho ea ho ea hona joale. Li-circuits tsa rectifier li sebelisoa lisebelisoa tsa motlakase tsa DC kapa li-detectors tsa RF lisebelisoa tsa radio. Potoloho ea rectifier hangata e na le diode tsa semiconductor ho laola mabone a hona joale le a mercury rectifier kapa likarolo tse ling.

Ka kakaretso, tsela e molemo ka ho fetisisa ea ho hlahloba diode ke ho sebelisa mokhoa oa "Diode Test" ho multimeter ea hau, hobane mokhoa ona o amana ka ho toba le litšobotsi tsa diode. Ka mokhoa ona, diode e ea pele e leeme. Diode e tloaelehileng e sebetsang e tla tsamaisa hona joale ha e lebelletse pele 'me e lokela ho ba le ho theoha ha motlakase. Haeba boleng ba motlakase bo bonts'itsoeng bo pakeng tsa 0.6 le 0.7 (bakeng sa diode ea silicon), joale diode e ntle ebile e phetse hantle.

Mehato ea tekanyo ea diode ka mokhoa oa "Test Diode".

• Etsa qeto ea lipalo tse ntle le tse mpe tsa diode.
• Boloka multimeter ea hau ea dijithale (DMM) ka mokhoa oa tlhahlobo ea diode. Ka mokhoa ona, multimeter e khona ho fana ka hoo e ka bang 2 mA lipakeng tsa litemoso tsa liteko.(2)
• Hokela tlhahlobo e ntšo ho terminal e fosahetseng 'me tlhahlobo e khubelu e lebise ho terminal.
• Sheba 'malo o hlahang skrineng ea multimeter. Haeba boleng ba motlakase bo bonts'itsoeng bo pakeng tsa 0.6 le 0.7 (bakeng sa diode ea silicon), joale diode e ntle ebile e phetse hantle. Bakeng sa diode tsa germanium, boleng bona bo tloha ho 0.25 ho isa ho 0.3.
• Hona joale fetola li-terminal tsa metha 'me u kopanye phuputso e ntšo ho theminale ea positi le e khubelu ho theminale e fosahetseng. Ena ke boemo bo ka morao ba leeme ba diode ha ho se na metsi a phallang ho eona. Ka hona, meter e lokela ho bala OL kapa 1 (e lekanang le potoloho e bulehileng) haeba diode e le ntle.

Haeba mitha e bonts'a boleng bo sa amaneng le maemo a mabeli a kaholimo, joale diode (1) e fosahetse. Mefokolo ea diode e ka ba e bulehileng kapa e khuts'oane.

fihlela qeto e

Sehloohong sena, re na le litaelo tse qaqileng mabapi le "Diode Test" mokhoa oa ho lekanya diode. Re tšepa hore tsebo eo re fanang ka eona e tla u thusa ho ithuta haholoanyane ka lisebelisoa tsa motlakase.

likhothaletso

(1) Lintlha tsa Diode - https://learn.sparkfun.com/tutorials/diodes/all

(2) Boitsebiso ba li-multimeter - https://www.electrical4u.com/voltage-or-electric-potential-difference/