Lim Capacitor Xaiv thiab hloov pauv hauv 5V Stabilized Power Supply
Muaj ob hom 5V tswj cov khoom siv hluav taws xob, ib qho yog linear tswj fais fab mov nrog qhov ua haujlwm qis dua, thiab lwm qhov yog hloov hluav taws xob nrog ntau zaus ua haujlwm. Cov khoom siv hluav taws xob sib txawv yuav tsum xaiv cov lim dej sib txawv.
5V linear tswj fais fab mov
Nyob rau hauv linear tswj fais fab mov nrog tsawg zaus khiav hauj lwm, muaj kuj tsis tshua muaj suab nrov thiab ripples. Kev ua haujlwm ntawm lub lim capacitor feem ntau yog txhawm rau tswj cov zis voltage. Qhov loj dua lub peev xwm ntawm lub lim capacitor, qhov zoo dua cov nyhuv. Capacitors tuaj yeem ua kom muaj zog ntxiv rau lub sijhawm los tiv thaiv qhov hluav taws xob los ntawm kev rub tawm sai sai. Lub 2200uf capacitor kuj suav hais tias yog lub peev xwm loj. Yog tias cov zis tam sim no loj, xav txog kev nce lub peev xwm ntawm lub lim capacitor.
5V switching fais fab mov
Kev khiav hauj lwm zaus ntawm kev hloov hluav taws xob yog qhov siab, feem ntau kaum ntawm KHz, thiab muaj ntau lub suab nrov thiab ripples. Nws yog ib qho tsim nyog yuav tau xav txog qhov capacitance impedance thiab zaus yam ntxwv. Qhov loj dua lub lim capacitance yog, qhov zoo dua. Vim tias tus nqi capacitance yuav poob qis tom qab qhov zaus ntawm cov khoom siv hluav taws xob nce, yog li peb yuav tsum xav txog ESR (sib npaug series impedance) thaum xaiv lub lim capacitor. Sim siv lub lim capacitor nrog tus nqi ESR me me. Capacitors yuav tsum muaj qhov sib npaug sib npaug hauv qhov kev khiav hauj lwm zaus kom muaj kev lim dej zoo
When selecting a capacitor, you need to consider the operating frequency, output voltage, output current, and capacitor value of the switching power supply. You can refer to the calculation formula of the predecessors: C>0.289/{f×(U/I)×ACv}, qhov twg ACv yog tus ripple coefficient, chav tsev yog feem pua.
