Laboratory ugesi: incazelo, izinzuzo kanye apharathasi nedostaka

Modern segezi ziphezulu amandla amadivayisi computer siqu. amayunithi Okudala ezifana ATX ahlale engaphiwanga, naphezu kweqiniso lokuthi ukuphila kwabo ayikahlanganiswa athuthukile. Uma akunjalo kule divayisi, khona-ke kungenzeka ukwakha kwamandla laboratory. Ngokukhethekile kufanele ikhokhwe kudivayisi nokukhawulela samanje, futhi kungenzeka isiqondiso yayo embundwini. Ngokuvamile, i-izenzo ezinjalo ingxenye njengoba TL494 chip-hlobo, njengoba kuba ikhambi kunazo esilula ukuguqulwa.

Ukwenza laboratory ugesi ngezandla zabo

Kute kwetfulwe kuhlelwe empilweni sidinga iyiphi inhlobo yedivayisi AT, ATX, ogxile TL494 IC. Icebo amandla anjalo supply kuboniswa esithombeni. Idivayisi luhlinzeka ukuthi kungenzeka nokukhawulela umthwalo ipharamitha kwamanje zokuhlanganisa ezengeziwe amplifier kungenzeka chip iphutha ukuthi alisetshenziswa yizimboni kubhekwe ilungu PC. Lo mshini kufakwe laboratory ugesi by inverting okhulisa wesifunda voltage (value e-negative). Lesi sifunda usuke isetshenziswa ngoba Imininingwane idivayisi lwenethiwekhi izintambo ukuze izindlu, ngaphezu kwalokho, ukusetshenziswa esiwusizo kudivayisi okunjalo kubonisa ukusebenza esitebeleni lonke uhla wamanje kanye voltage ugesi. Inzuzo yesithathu kubhekwa zibe nezinzwa ezibukhali. Lokhu kuvumela ukusetshenziswa inzwa wamanje ne sithambekele, kanjalo nokunciphisa inani amandla sigameko, kuphumele ukusebenza ngamandla laboratory supply is cishe hhayi ukufuthelana.

ISIZINDA zisuswe:

1. Block kumiswa Amandla amasignali Good.

2. Rectifiers, umshini, zonke izakhi ze-izifunda okukhiphayo. kuphela circuit okukhipha 12 kufanele kwesokunxele B.

3. lokukhipha oxide capacitor kumelwe ithathelwe ngesikhathi voltage okusezingeni eliphezulu nge voltage 25 V

4. mpintsha kufanele rewound. Sicela ususe wonke Windings ke nilimaza entsha (wiring wire ububanzi 0.6-1 mm yokugcwalisa).

Umgomo we operation zedivayisi

Ngesisekelo le comparator, ababekade bezisebenzisa ukuze ukhiqize "Amandla" isignali libuthene iyunithi esihlinzeka inkomba ipharamitha imodi kukhawulwe zamanje umthwalo. Neinvertiruemy voltage enikeziwe okokufaka comparator (ukubaluleka ezilinganiselwe ubukhulu okokufaka). Ngesikhathi inverting okokufaka - reference value. Inqobo nje uma zethu laboratory ugesi lasebenta eliletha ukuthula voltage ngesikhathi okokufaka neinvertiruemom ephakeme kunaleyo ngesikhathi inverting. Ngesikhathi ekhishwa comparator eqala okusezingeni eliphezulu isignali ezingeni, ngakho inkomba ucime. Uma idivayisi akube kusakhulunywa ngaye njengoba sinjalo ngenxa ukulinganiselwa kwamanje ku umehluko ezingaba incipha uvo kanye okukhipha ezingeni eliphansi Kumiswa. Izibani LED, kusho ukuthi ama-apharathasi iphelelwe imodi sinjalo.

Semiconductor chips anikwe amandla amandla eceleni ukuthi libuthene phezu Transistor ukushintsha ukubaluleka lo voltage okukhiphayo akuphazamisi ukusebenza kwe-HTML.

Laboratory ugesi kusukela ATX: ubukghoni nokubhalelwa

Izinzuzo amadivayisi zibala izindleko zabo ongaphakeme, namabhlogo angaphambilini ingatholakala yonke indawo. Ziqukethe zonke izakhi ezidingekayo, eyisikhulu phakathi okuyinto transformer ishayela. Ngaphezu kwalokho, amandla Iyunithi enikeza has a ezahlukene nobukhulu izici. I yokuntula kukhona uhla enkulu ephezulu umsindo imvamisa, okwenza zilinganiselwe izinhlobo ukusetshenziswa.