Plaub hom kev tawm tswv yim circuits rau ib leeg-chip hloov hluav taws xob khoom siv
(1) Cov lus qhia yooj yim Circuit Court;
(2) Txhim kho cov lus qhia yooj yim Circuit Court;
(3) Optocoupler tawm tswv yim Circuit Court nrog voltage regulator;
(4) Nruab nrog TL431 optocoupler tawm tswv yim circuit.
Lawv qhov yooj yim Circuit Court yog qhia nyob rau hauv daim duab.
Daim duab (a) qhia txog cov lus qhia yooj yim hauv Circuit Court, uas muaj qhov zoo ntawm cov khoom siv hluav taws xob yooj yim, tsis tshua muaj nqi, thiab tsim nyog rau kev ua cov khoom siv hluav taws xob me me thiab kev lag luam hloov hluav taws xob; Nws qhov tsis zoo yog qhov tsis zoo ntawm kev tswj hwm kev ua haujlwm tsis zoo, nrog rau qhov ntsuas hluav taws xob ntawm SV=± 1.5% rau ± 2.5% thiab kev tswj hwm tus nqi ntawm SI ≈ ± 5%.
Plaub yam yooj yim ntawm daim duab tawm tswv yim circuits
a) Cov lus qhia yooj yim Circuit Court (b) Txhim kho cov lus qhia yooj yim Circuit Court (c) Optocoupler tawm tswv yim circuit nrog voltage regulator (d) Optocoupler tawm tswv yim circuit nrog TL431
Txhawm rau txhim kho cov kev tawm tswv yim yooj yim, tsuas yog ntxiv qhov ntsuas hluav taws xob VDZ thiab resistor R1 kom ua tiav qhov kev hloov pauv ntawm ± 2%. Qhov ruaj khov voltage ntawm VDZ feem ntau yog 22V, thiab tus naj npawb ntawm cov lus qhia winding yuav tsum tau nce ntxiv kom tau txais cov lus taw qhia siab dua UFB thiab ua tau raws li qhov xav tau ntawm lub voj voog.
Nws yog optocoupler tawm tswv yim Circuit Court nruab nrog voltage regulator. Qhov siv voltage UZ yog muab los ntawm VDZ, thiab thaum cov zis voltage UO hloov pauv, qhov yuam kev voltage tuaj yeem tau txais ntawm LED hauv optocoupler. Yog li ntawd, qhov Circuit Court no sib npaug rau kev ntxiv qhov yuam kev sab nraud rau TopSwitch, uas tuaj yeem siv ua ke nrog kev ua yuam kev sab hauv amplifier los kho UO. Qhov kev tawm tswv yim Circuit Court no tuaj yeem ua tiav qhov kev hloov pauv voltage tsawg dua ± 1%.
Nws yog optocoupler tawm tswv yim circuit nruab nrog TL431, uas muaj ib tug complex Circuit Court tab sis qhov zoo tshaj plaws voltage stabilizing kev ua tau zoo. Ntawm no, TL431 hom adjustable precision parallel voltage regulator yog siv es tsis txhob ntawm qhov zoo tib yam voltage regulator los tsim ib tug sab nraud yuam kev amplifier, thiab ces zoo kho lub UO, uas yuav ua tau ib tug voltage hloov thiab load hloov tus nqi ntawm ± 0 .2%, piv rau linear voltage regulators. Qhov kev tawm tswv yim Circuit Court no tsim nyog rau kev tsim cov khoom siv hluav taws xob hloov pauv.
