Nyob rau hauv lub ntiaj teb intricate ntawm electronics, diodes kav zoo tshaj plaws raws li lub hauv paus Cheebtsam uas tswj cov ntws ntawm hluav taws xob tam sim no. Ntawm qhov sib txawv ntawm diodes, Zener diodes thiab cov diodes tsis tu ncua sawv tawm, txhua tus muaj cov yam ntxwv tshwj xeeb thiab kev siv. Thaum ob qho tib si ua haujlwm tseem ceeb hauv cov hluav taws xob hluav taws xob, kev nkag siab txog lawv qhov sib txawv yog qhov tseem ceeb rau kev xaiv cov diode uas tsim nyog rau ib txoj haujlwm tshwj xeeb.
Delving rau hauv cov diodes tsis tu ncua
Cov diodes tsis tu ncua, tseem hu ua PN junction diodes, yog cov khoom siv hluav taws xob semiconductor uas tso cai rau tam sim no ntws mus rau hauv ib qho kev taw qhia (kev taw qhia pem hauv ntej) thaum thaiv nws nyob rau hauv qhov kev taw qhia (rov qab kev taw qhia). Cov cuab yeej rectifying no ua rau lawv cov khoom tseem ceeb hauv kev hloov pauv tam sim no (AC) mus rau tam sim no (DC).
Tshawb nrhiav Zener Diodes
Zener diodes, ib hom tshwj xeeb ntawm diode, qhia cov qauv tsim thiab kho cov khoom ntawm cov diodes li niaj zaus tab sis nthuav tawm qhov zoo tshaj plaws ntxiv: tswj kev tawg. Thaum raug rau qhov rov qab tsis zoo voltage tshaj lawv qhov kev txiav txim siab voltage, Zener diodes tawg, ua kom tam sim no ntws mus rau qhov rov qab. Qhov kev tswj xyuas qhov tshwm sim no ua rau lub hauv paus ntawm lawv cov haujlwm tshwj xeeb.
Kev nthuav tawm Cov Ntsiab Lus Sib Txawv
Lub ntsiab lus sib txawv ntawm Zener diodes thiab cov diodes li niaj zaus nyob hauv lawv tus cwj pwm tawg:
Cov txheej txheem tawg: Cov diodes tsis tu ncua nthuav tawm avalanche tawg, ib qho kev tswj tsis tau thiab muaj peev xwm ua kom puas tsuaj. Zener diodes, ntawm qhov tod tes, dhau mus Zener kev puas tsuaj, kev tswj hwm thiab kwv yees qhov tshwm sim tawg.
Breakdown Voltage: Cov diodes tsis tu ncua muaj ntau qhov sib txawv ntawm cov hluav taws xob tawg, feem ntau sib txawv nrog rau kev tsim khoom. Zener diodes, nyob rau hauv sib piv, khav ib tug precisely txhais thiab guaranteed tawg voltage, ua rau lawv zoo tagnrho rau voltage kev cai daim ntawv thov.
Daim ntawv thov: Cov diodes tsis tu ncua feem ntau yog cov khoom siv hluav taws xob, hloov AC rau DC. Zener diodes zoo tshaj hauv kev tswj hluav taws xob, kev tiv thaiv overvoltage, voltage clamping, thiab waveform shaping.
Xaiv txoj cai Diode
Kev xaiv ntawm Zener diode thiab ib lub diode ib txwm nyob ntawm daim ntawv thov tshwj xeeb:
Rau rectification: Cov diodes tsis tu ncua yog qhov kev xaiv zoo tshaj rau kev hloov AC rau DC.
Rau kev tswj hwm qhov hluav taws xob: Zener diodes yog qhov kev xaiv zoo tshaj plaws rau kev tswj xyuas qhov hluav taws xob ruaj khov thoob plaws lub nra.
Rau kev tiv thaiv overvoltage: Zener diodes tiv thaiv cov khoom rhiab los ntawm shunting tshaj voltage rau hauv av thaum surges los yog spikes.
Rau qhov voltage clamping: Zener diodes tuaj yeem txwv qhov siab tshaj plaws lossis qhov tsawg kawg nkaus voltage theem hauv Circuit Court, tiv thaiv teeb liab distortion.
Rau waveform shaping: Zener diodes tuaj yeem tsim waveforms los ntawm clipping lossis rectifying AC signals.
Xaus
Zener diodes thiab cov diodes tsis tu ncua, thaum sib koom ua ke ntawm lub hauv paus, sib txawv hauv lawv cov kev coj cwj pwm thiab kev siv. Zener diodes, nrog rau lawv cov kev txiav txim siab ua kom tsis muaj zog thiab muaj peev xwm tswj tau qhov hluav taws xob, ci hauv cov ntawv thov kom muaj kev ruaj ntseg thiab kev tiv thaiv. Cov diodes tsis tu ncua, nrog lawv cov kev ua tau zoo, ua tau zoo hauv kev hloov AC rau DC. Kev nkag siab txog cov kev sib txawv no ua rau cov neeg nyiam siv hluav taws xob los txiav txim siab thaum xaiv cov diode tsim nyog rau lawv cov haujlwm.
Post lub sij hawm: Jun-24-2024