Yuav ua li cas kom tsis txhob cuam tshuam ntawm kev hloov hluav taws xob tswj hluav taws xob
Kev hloov hluav taws xob tswj hluav taws xob (stabilized voltage supply) yog ib qho khoom siv hluav taws xob uas tuaj yeem muab AC lossis DC lub zog ruaj khov rau lub nra, suav nrog AC tswj fais fab mov thiab DC tswj fais fab mov. Thaum cov kab hluav taws xob hluav taws xob lossis kev thauj khoom hloov pauv sai sai, cov khoom siv hluav taws xob tswj hwm yuav them rau qhov voltage amplitude nrog cov lus teb ceev ntawm 10-30ms kom ruaj khov nyob rau hauv ± 2 feem pua.
Switching tswj fais fab mov yog ib yam tshiab ntawm lub hwj chim mov. Nws muaj qhov zoo ntawm kev ua haujlwm siab, lub teeb yuag, nce qib thiab nqis qis, thiab lub zog tso zis loj. Txawm li cas los xij, txij li lub voj voog ua haujlwm nyob rau hauv lub xeev hloov, lub suab nrov kuj loj. Los ntawm daim duab hauv qab no, cia peb tham luv luv txog kev ua haujlwm ntawm cov kauj ruam-down switching fais fab mov. Raws li pom nyob rau hauv daim duab, lub Circuit Court yog tsim los ntawm hloov K (transistor los yog teb cov nyhuv transistor nyob rau hauv lub tiag tiag Circuit Court), freewheeling diode D, lub zog cia inductor L, lim capacitor C, thiab lwm yam. Thaum lub hloov mus kaw, lub hwj chim mov khoom siv. lub zog rau lub load los ntawm kev hloov K thiab inductor L, thiab khaws ib feem ntawm lub zog hluav taws xob hauv inductor L thiab capacitor C.
Thaum lub switching tswj fais fab mov ua hauj lwm, lub switching transistor thiab lub freewheeling diode (los yog lwm switching transistor) yeej ib txwm qhib los yog offal hloov. KQ thiab KD tsis yog cov khoom siv zoo tagnrho, thiab kev hloov pauv ntawm ob lub xeev yuav siv sijhawm qee lub sijhawm, uas yog qhov cuam tshuam spikes raug tsim. Thaum lub sijhawm hloov pauv hauv lub xeev, qhov hloov pauv uas qhib tsis tau qhib tag nrho, thiab qhov hloov pauv uas tau muab tua tsis raug kaw rau lub sijhawm tam sim no, muaj txoj hauv kev ncaj qha los ntawm cov khoom siv hluav taws xob mus rau hauv av, thiab lub sijhawm tam sim no. Yog generated. Qhov tam sim no muaj feem xyuam rau yam xws li qhov sib txawv ntawm qhov tam sim no Imax thaum lub transistor hloov pauv thiab tam sim no Icmin thaum nws raug tua, thiab lub sijhawm ntawm kev sib txuas ntawm cov keyboards KQ thiab KD. Vim muaj kev cuam tshuam ntawm kev faib hluav taws xob hauv Circuit Court, ringing oscillations tshwm sim ntawm lub waveform.
Thaum lub switching tswj fais fab mov ua hauj lwm, nws radiates cuam tshuam rau qhov chaw. Lub suab nrov radiated yog inversely proportional rau qhov kev ncua deb ntawm lub radiating qhov chaw. Feem ntau, nws tuaj yeem xaim tawm sab nraud 5cm. Yog tias cov qauv tsis tso cai, nws yuav tsum tau tiv thaiv. Lub zog electromagnetic teb yog generated nyob ib ncig ntawm lub hwj chim input kab. Yuav kom txo tau cov electromagnetic coupling ntawm input kab thiab cov zis kab, ob yuav tsum nyob deb.
