Ntchito yaikulu ya optocoupler mu dera lamagetsi ndikudzipatula panthawi yosintha magetsi kukhala kuwala komanso kupewa kusokonezana. Ntchito ya cholumikizira magetsi ndiyofunika kwambiri mu dera.
Chizindikiro chimayenda mbali imodzi. Kulowetsa ndi kutulutsa kumachotsedwa kwathunthu ndi magetsi. Chizindikiro chotulutsa sichikhudza zomwe zilowetsedwa. Mphamvu yolimbana ndi kusokoneza, kugwira ntchito bwino, kusalumikizana, moyo wautali komanso kugwira ntchito bwino kwambiri. Optocoupler ndi chipangizo chatsopano chomwe chinapangidwa m'zaka za m'ma 1970. Pakadali pano, chimagwiritsidwa ntchito kwambiri mu insulation yamagetsi, kusintha kwa level, interstage coupling, driving circuit, switching circuit, chopper, multivibrator, signal isolation, interstage isolation, pulse amplification circuit, digital instrument, long-distance signal transmission, pulse amplifier, solid-state device, state relay (SSR), chida, zida zolumikizirana ndi microcomputer interface. Mu monolithic switching power supply, linear optocoupler imagwiritsidwa ntchito kupanga optocoupler feedback circuit, ndipo duty cycle imasinthidwa posintha control terminal current kuti ikwaniritse cholinga cholondola cha voltage regulation.
Ntchito yaikulu ya optocoupler posintha magetsi ndi kudzipatula, kupereka chizindikiro cha mayankho ndi switch. Mphamvu ya optocoupler mu switching power supply circuit imaperekedwa ndi voltage yachiwiri ya high-frequency transformer. Pamene output voltage ili yotsika kuposa zener voltage, yatsani signal optocoupler ndikuwonjezera duty cycle kuti muwonjezere output voltage. M'malo mwake, kuzimitsa optocoupler kumachepetsa duty cycle ndikuchepetsa output voltage. Pamene katundu wachiwiri wa high-frequency transformer wadzaza kwambiri kapena switch circuit yalephera, palibe optocoupler power supply, ndipo optocoupler imalamulira switch circuit kuti isagwedezeke, kuti iteteze switch chubu kuti isatenthedwe. Optocoupler nthawi zambiri imagwiritsidwa ntchito ndi TL431. Ma resistors awiriwa amatengedwa motsatizana ku 431r terminal kuti ayerekezedwe ndi internal comparator. Kenako, malinga ndi chizindikiro choyerekeza, kukana kwa nthaka kwa 431k kumapeto (kumapeto komwe anode imalumikizidwa ndi optocoupler) kumawongoleredwa, kenako kuwala kwa diode yotulutsa kuwala mu optocoupler kumawongoleredwa. (pali ma diode otulutsa kuwala kumbali imodzi ya optocoupler ndi ma phototransistors kumbali inayo) mphamvu ya kuwala komwe kumadutsa. Yang'anirani kukana kumapeto kwa CE kwa transistor kumapeto ena, sinthani chip ya LED power drive, ndikusintha zokha kayendedwe ka ntchito ya chizindikiro chotulutsa kuti mukwaniritse cholinga chokhazikitsa mphamvu yamagetsi.
Kutentha kwa mlengalenga kukasintha kwambiri, kutentha kwa chinthu chowonjezera mphamvu kumakhala kwakukulu, zomwe siziyenera kuchitika ndi optocoupler. Dongosolo la Optocoupler ndi gawo lofunika kwambiri pakusintha magetsi.
Nthawi yotumizira: Meyi-03-2022