1. Tus yam ntxwv zoo
Hauv cov hluav taws xob hauv hluav taws xob, qhov zoo ntawm ncej ntawm diode txuas mus rau qhov kawg siab kawg, thiab qhov tsis zoo ntawm lub dav hlau txuas nrog lub qis kawg, thiab qhov diode yuav ua rau nws. Lub hom phiaj no hu ua kev ncaj ncees tom ntej. Nws yuav tsum tau muab sau tseg tias, thaum qhov chaw nres tsheb rau pem hauv ntej kom ob hnub ntawm qhov diode tsawg heev, lub diode tseem tsis tau coj thiab cov nraim tam sim no los ntawm qhov diode tsis muaj zog heev. Tsuas yog thaum qhov kev taw qhia rau pem suab nce mus txog ib qho nqi (uas yog hu ua "threshold voltage", tus germantium tube yog kwv yees li 0.2V, thiab lub raj silicon yog li 0.6V), lub diode yuav ncaj qha mus. Lub qhov hluav taws xob ntawm ob hnub ntawm qhov diode no yeej tsis txawv txav (lub germanium tube yog li ntawm 0.3v thiab lub raj silicon yog li 0.7v), uas yog hu ua "positive pressure drop" ntawm qhov diode.
2. Rov qab yam ntxwv
Hauv hluav taws xob hauv hluav taws xob, diode ntawm qhov tsis tshua muaj hluav taws xob ntawm lub anode, cathode nyob rau hauv high voltage sab, tam sim no yuav luag tsis muaj tam sim no ntws los ntawm diode, lub diode yog los ntawm lub xeev, txoj kev txuas, paub li nrawm. Thaum lub diode yog nyob rau hauv rov qab thuam, muaj tseem yuav yog ib tug faint rov qab tam sim no ntws los ntawm diode, lub npe hu ua cov leakage tam sim no. Thaum qhov rov qab muaj zog ntawm ob qho tag nrho ntawm qhov diode nce mus rau ib qho nqi, qhov rov qab yuav nce siab, thiab qhov diode yuav plam txoj kev tswj cov kev coj ua, uas yog hu ua qhov tawg ntawm lub diode.
Lub ntsiab ntawm ib qho diode.
Siv los qhia txog kev ua haujlwm ntawm qhov diode thiab qhov muaj feem xyuam ntawm cov cim kev qhia, uas hu ua diode tsis. Ntau hom duab diodes sib txawv li cas. Rau cov pib tshiab, cov ntsiab lus nram qab no yuav tsum to taub:
1. Tshaj kom dhau mus ua haujlwm tam sim no.
Qhov siab tshaj plaws tam sim no uas tau tso cai los ntawm lub diode hauv kev ua hauj lwm mus sij hawm ntev. Raws li qhov tam sim no dhau los ntawm lub raj, cov tub ntxhais tub ntxhais ua kom sov, qhov kub nce, thiab qhov ntsuas kub tshaj qhov txwv tsis pub lim (lub silicon raj yog txog 140, thiab lub raj ntawm germanium yog li 90), uas yuav ua rau tub ntxhais tub ntxhais mus rau qhov tsis txaus siab thiab kev puas tsuaj. Vim li no, lub diode yuav tsum tsis txhob tshaj tus nqi ua haujlwm tam sim no tus nqi ntawm daim diode. Piv txwv, tus nominal zoo ua hauj lwm tam sim no ntawm feem ntau siv nyob rau hauv4001-4007 germanium diodes yog 1A.
2. Tshaj siab tshaj plaws ua hauj lwm voltage.
Thaum qhov hluav taws xob rov qab ntawm ob qho tag nrho ntawm qhov diode siab mus rau ib qho nqi, lub raj yuav raug punctured thiab tus unidirectional conductivity yuav ploj mus. Yuav kom ntseeg tau tias qhov kev nyab xeeb, qhov siab tshaj plaws ua hauj lwm muaj qhov voltage tus nqi teev. Piv txwv, qhov rov qab siab ntawm IN4001 diode yog 50V thiab rov qab siab ntawm IN4007 yog 1000V.
3. Rov qab tamsim no
Qhov rov qab tam sim no yog qhov tam sim no ntawm lub diode los ntawm diode ntawm qhov teev kev ntsuas kub thiab qhov siab tshaj plaws rov qab. Qhov me me rov qab tam sim no, qhov zoo dua qhov hluav taws xob kev ua tau zoo ntawm ib sab ntawv qhia. Nws yog tsim nyog teev tias qhov rov qab tam sim no muaj feem xyuam nrog kev kub, thiab qhov rov qab tam sim no yog doubled los ntawm 10. Hom 2 ap1 germanium diodes, piv txwv li, thaum 25 yog rov qab tam sim no ntawm 250 ua, kub nce mus txog 35, rov qab tam sim no yuav nce mus rau 500 ua, thiab hais txog, nyob rau hauv 75, thaum nws 8 m, rov qab tam sim no tau mus tsis tau tsuas yog ploj ntawm ib qho kev taw qhia ntawm hluav taws xob conductivity, tseem yuav ua rau cov yeeb nkab overheating thiab kev puas tsuaj. Piv txwv, 2CP10 silicon diode, ntawm 25, qhov rov qab tam sim no tsuas yog 5uA, thiab thaum twg kub nce mus txog 75, qhov rov qab tam sim no tsuas yog 160uA. Vim li no, silicon diode muaj stability zoo dua li cov diapered diam siab hauv siab.