Video: Dab tsi yog diode Ua GCSE?
2024 Tus sau: Miles Stephen | [email protected]. Kawg hloov kho: 2023-12-15 23:36
A diode yog ib qho khoom siv uas tso cai rau tam sim no ntws mus rau ib qho kev taw qhia tab sis tsis nyob rau hauv txoj kev rov qab. Nws cov cim circuits muaj ib daim duab peb sab taw tes rau hauv cov kev taw qhia uas tam sim no tso cai rau ntws nrog ib txoj kab ntawm qhov taw tes, hauv lub voj voog. Diodes muaj txiaj ntsig rau kev tso tseg tam sim no ntws hauv qhov "tsis ncaj ncees lawm" kev taw qhia.
Ua kom pom qhov no, tus resistor ua GCSE dab tsi?
Voltage thiab tam sim no nyob rau hauv resistors A resistor yog ib qho khoom siv hluav taws xob uas txwv tsis pub khiav ntawm hluav taws xob tam sim no. Tam sim no ntws hla resistor ntawm qhov ntsuas kub tsis tu ncua yog ncaj qha rau qhov sib txawv ntawm qhov sib txawv.
Ib yam li ntawd, tam sim no ntws los ntawm diode li cas? Tam sim no dhau los ntawm ib lub diode tuaj yeem xwbgo hauv ib qho kev taw qhia, hu ua kev taw qhia pem hauv ntej. Tam sim no sim ntws rov qab kev taw qhia yog thaiv. Lawv zoo li ib-txoj kev valve ntawm electronics. Yog qhov voltage hla ib diode yog negative, tsis muaj tam sim no canflow *, thiab qhov zoo tagnrho diode zoo li ib tug opencircuit.
Ua li no, lub diode ua haujlwm yooj yim li cas?
Electrons thiab qhov txav mus hla txoj kev sib tshuam nyob rau hauv oppositedirections thiab ib tug tam sim no ntws. Qhov no yog li cas ib tug dog dig diode ua haujlwm thiab vim li cas nws tso cai rau hluav taws xob tam sim no yuav ntws los ntawm ib txoj kev xwb. Xav txog ib diode raws li hluav taws xob ib-txoj kev.
Lub diode ua dab tsi hauv hluav taws xob hluav taws xob?
Lub luag haujlwm tseem ceeb. Feem ntau ua haujlwm ntawm a diode yog pub ib hluav taws xob tam sim no mus rau hauv ib qho kev taw qhia (hu ua cov diode rau pem hauv ntej), thaum thaiv nws nyob rau hauv qhov opposite direction (rov qab kev taw qhia). Assuch, ua diode tuaj yeem saib raws li hluav taws xob version ntawm acheck valve.
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