Laboratory mphamvu okwanira: malongosoledwe, ubwino ndi zida nedostaka

katundu wamakono mphamvu ndi mkulu mphamvu zipangizo kompyuta munthu. mayunitsi achikulire monga ATX kukhala sinadzatengedwe ndi achibale, ngakhale kuti moyo wawo sanayambebe otukuka. Ngati si choncho chipangizo ichi, ndiye zimatheka bwanji kumanga chakudya zasayansi mphamvu. chidwi ziperekedwe kwa panopa Kuchepetsa chipangizo, ndi kuthekera lamulo pakhomo ake. Nthawi zambiri, zinthu ngati chigawo chimodzi ngati Chip-mtundu TL494, chifukwa ndi njira yosavuta kwambiri kutembenuka.

Kuchita zasayansi mphamvu okwanira ndi manja awo

Kuti litsatira kukonzekera moyo tiyenera aliwonse chipangizo AT, ATX, ozikidwa pa TL494 IC. Chiwembu cha kotunga mphamvu zikusonyezedwa chithunzi. chipangizo amapereka kuthekera Kuchepetsa katundu panopa chizindikiro mwa pophatikiza zina mkuzamawu zotheka Chip tchimo sanagwiritsidwe ntchito ndi opanga ankaona PC membala. The mkuzamawu m'gulu magetsi zasayansi ndi inverting amveke dera voteji (mtengo zoipa). dera Izi kusinthitsa ntchito chifukwa okwana mawaya zamalumikizidwe chipangizo cha nyumba ya Komanso, kugwiritsa ntchito chipangizo choterocho chimasonyeza ntchito khola mu uthunthu wa panopa ndi voteji magetsi. Ubwino wachitatu imatengedwa tcheru kwambiri. Ichi chizathandiza ntchito ndi kachipangizo panopa ndi kukana zochepa, potero kucheperachepera kufunika kwa mphamvu chochitika, chifukwa mu ntchito yobweretsa zasayansi mphamvu pafupifupi osati usavutike.

Mfundo kuchotsedwa:

1. Block mapangidwe Mphamvu Good chizindikiro.

2. Rectifiers, Zosefera, mbali zonse za madera linanena bungwe. kokha linanena bungwe dera 12 zikatsala B.

3. linanena bungwe okusayidi capacitor ayenera m'malo pa voteji mkulu ndi voteji 25 V.

4. fulumizitsa ayenera rewound. Chonde kuchotsa windings zonse ndiye chilonda watsopano (Kulumikizana waya awiri a 0.6-1 mamilimita kuti kudzaza).

Mfundo ntchito chipangizo

Pamaziko a comparator ya mmbuyomu ntchito kupanga ndi "Mphamvu" mbendera ndi anasonkhana wagawo amene amathandiza limasonyeza akafuna chizindikiro kuchepetsa katundu panopa. Neinvertiruemy voteji aperekedwe ku athandizira comparator (mtengo molingana ndi kukula athandizira). Pa inverting athandizira - mtengo pakuyenerera. Bola ngati choyezera wathu magetsi ikugwira ntchito mwa wosasunthika pa voteji pa athandizira ndi neinvertiruemom kuposa pa inverting lapansi. Pa linanena bungwe la comparator adzatenge mkulu chizindikiro msinkhu, kotero chizindikiro kuuzimitsa. Pamene chipangizo lotulukira ndi olimba chifukwa zofooka panopa pa kusiyana angathe amachepetsa athandizira ndi linanena bungwe otsika mlingo unakhazikitsidwa. magetsi LED, zikutanthauza kuti zida ndi kutuluka akafuna olimba.

tchipisi michenga yopangira zida zamagetsi ali zoyendetsedwa ndi mphamvu standby amene anasonkhana pa transistor kusintha mtengo wa voteji linanena bungwe sikumangotikhudza machitidwe a ICs.

Laboratory magetsi kuchokera ATX: mphamvu ndi zofooka

Ubwino wa zipangizo amenewa monga ndalama zawo otsika, monga midadada kale ntchito angapezeke kulikonse. Iwo ali zigawo zonse zofunikira, wamkulu amene ali adzionere thiransifoma. Komanso, magetsi wagawo ali ndi kulemera ndi kukula makhalidwe osiyana. The kuipa ali osiyanasiyana lalikulu la phokoso mkulu pafupipafupi, zomwe zimasokoneza ntchito.