Vim li cas pmos siv los ua pass transistor hauv ldo?

Cov txheej txheem:

Vim li cas pmos siv los ua pass transistor hauv ldo?
Vim li cas pmos siv los ua pass transistor hauv ldo?
Anonim

PMOS. Lub PMOS transistor muaj qhov tsis txaus ntseeg tam sim no thiab tsuas yog qhov poob tawm qhov hluav taws xob yog nws qhov chaw-drain saturation voltage. Yog li ntawd, cov no yog siv nyob rau hauv LDO regulators. Raws li nyob rau hauv cov ntaub ntawv ntawm PNP transistor, lub load yog txuas mus rau ib tug high-impedance node (lub ntws) thiab cov regulator tsis ruaj khov.

Vim li cas PMOS siv hauv LDO?

Qhov kev tso tawm hluav taws xob rau PMOS LDOs yog sib npaug rau cov zis tam sim no lub sij hawm Rds(on) ntawm MOSFET. … Hauv cov ntawv thov tam sim no qis dua, PMOS LDOs feem ntau muaj VDO qis dua li ntawm PNP LDOs. Daim duab 2 suav nrog qhov poob qis ntawm PNP LDO nrog PMOS LDO.

Lub caij twg yog qhov tsim nyog rau kev ua haujlwm qis qis ntawm LDO thiab vim li cas?

Lub caij dhau mus hauv LDO yog lub luag haujlwm rau kev hloov pauv tam sim no los ntawm kev nkag mus rau kev thauj khoom thiab raug tsav los ntawm qhov yuam kev amplifier hauv cov lus tawm tswv yim. MOSFETs (ob leeg PMOS thiab NMOS) feem ntau yog siv los ua cov ntsiab lus dhau. Cov duab hauv qab no qhia txog LDO layout nrog PMOS pass element.

Dab tsi yog qhov txawv ntawm LDO thiab linear regulator?

Ib qho LDO regulator yog linear regulator uas muaj peev xwm ua hauj lwm ntawm ib qho tsis tshua muaj peev xwm sib txawv ntawm cov tswv yim thiab cov zis voltage. Lub tshuab hluav taws xob tawm yog hom hluav taws xob IC uas tuaj yeem tso tawm qhov hluav taws xob tsis tu ncua los ntawm qhov hluav taws xob nkag thiab siv ntau yam khoom siv hluav taws xob.

Dab tsi ua lub luag haujlwm tseem ceebnyob rau hauv stabilizing cov zis ntawm LDO?

Qhov nce ntxiv los ntawm yuam kev amplifier pab txo qis kev tswj hwm ntawm LDO. … Qhov yuam kev amplifier ua lub luag haujlwm tseem ceeb kom ruaj khov tus nqi tso zis thaum lub sijhawm ncua.

Pom zoo:

Vim li cas cov khoom siv dielectric siv hauv capacitor?

Vim li cas cov khoom siv dielectric siv hauv capacitor?

Ib qho khoom siv dielectric yog siv los cais cov paib hluav taws xob ntawm lub capacitor. Cov khoom siv insulating no tseem ceeb txiav txim siab txog cov khoom ntawm cov khoom. Lub dielectric qhov tsis tu ncua ntawm cov khoom txiav txim siab npaum li cas ntawm lub zog uas lub capacitor tuaj yeem khaws cia thaum siv hluav taws xob.

Vim li cas cov alloys siv hauv cov khoom siv hluav taws xob cua sov?

Vim li cas cov alloys siv hauv cov khoom siv hluav taws xob cua sov?

Raws li peb paub alloys muaj siab resistivity thiab siab melting point piv rau cov hlau ntshiab. Yog li cov hlau tsis tuaj yeem yooj yim hlawv lossis oxidize ntawm qhov kub siab dua. Tam sim no raws li peb xav kom kub siab dua hauv cov khoom siv cua sov yog li peb siv cov alloys hauv cov khoom siv cua sov.

In cmos logic lub pmos transistor ua li cas?

In cmos logic lub pmos transistor ua li cas?

A PMOS transistor ua raws li an hloov pauv uas yog nyob rau thaum tswj lub teeb liab qis thiab tawm thaum lub teeb liab tswj siab. Lub PDN yog tsim los siv NMOS li, thaum PMOS transistors siv nyob rau hauv lub PUN. Lub luag haujlwm ntawm PMOS yog dab tsi hauv CMOS logic circuit?

Vim li cas cov phiaj xwm tseem ceeb siv rau hauv kev siv nyiaj txiag thiab kev kwv yees?

Vim li cas cov phiaj xwm tseem ceeb siv rau hauv kev siv nyiaj txiag thiab kev kwv yees?

Lub Rooj Milestones yog ib qho tseem ceeb tshaj plaws hauv koj txoj kev npaj ua lag luam. Nws teeb txoj kev npaj rau hauv cov tswv yim, cov ntsiab lus tseem ceeb, nrog cov peev txheej tiag, hnub kawg, thiab kev tswj xyuas lub luag haujlwm. Nws pab koj ua kom pom tseeb thaum koj tab tom sau koj txoj kev npaj ua lag luam, thiab tom qab ntawd, cov lus Milestones thiab cov phiaj xwm-vs.

Vim li cas gutta-percha siv hauv cov kwj dej hauv paus?

Vim li cas gutta-percha siv hauv cov kwj dej hauv paus?

Cov txheej txheem yuav tsum ntxuav tawm cov kab hniav uas muaj kab mob, tshem tawm cov kab mob thiab tom qab ntawd muab cov hniav thiab muab khi. Gutta percha yog cov tshuaj uas yog siv los sau cov hniav kom tsis txhob kis kab mob. Gutta percha yog ib qho thermoplastic filling uas yog cua sov thiab ces nias rau hauv cov kwj hniav.