Kodi VAC mu engineering yamagetsi ndi chiyani?
Zamkatimu
Kodi mukufuna kudziwa chomwe chidule cha VAC chimayimira pamagetsi? Ndine wovomerezeka wamagetsi ndipo ndifotokoza izi mwatsatanetsatane m'nkhani yaifupi pansipa.
Mutha kuwona 110VAC kapena 120VAC yolembedwa pazida zambiri zamagetsi.
Nthawi zambiri, VAC ndi mawu omwe amagwiritsidwa ntchito popanga magetsi a ma volts a AC. Mwinamwake mumadziwa ma volts a DC; ndi magetsi a DC. Mofananamo, VAC imayimira magetsi a AC. Chokhacho chomwe muyenera kudziwa ndikuti VDC ndi VAC zimayimira ma voltages.
Pitirizani kuwerenga kuti mumve zambiri.
Zonse zomwe muyenera kudziwa za VAC
Mayiko ambiri ku North America amagwiritsa ntchito 110 kapena 120 VAC. Ndipo mukhoza kuona zizindikiro zimenezi pa zipangizo zina zamagetsi monga makompyuta, ma transformer amakono, ndi ma multimeter a digito. Koma kodi mukudziwa tanthauzo lake?
VAC ndi mawu omwe amagwiritsidwa ntchito kutanthauza ma volts a AC. Chifukwa chake palibe chinthu ngati mphamvu ya AC. Ndi mphamvu yamagetsi ya AC yokha.
Komabe, kuti mumvetse bwino, muyenera kumvetsetsa kusiyana pakati pa VAC ndi VDC.
Kodi VDC ndi VAC ndi chiyani?
Choyamba, muyenera kudziwa za DC ndi AC kuti mumvetse mawu awiriwa.
Direct current (DC)
Mphamvu ya DC imayenda kuchokera ku zoyipa kupita kumapeto. Kuthamanga uku ndi kwa unidirectional, ndipo batire yagalimoto ndi chitsanzo chimodzi chodziwika.
Alternating current (AC)
Mosiyana ndi DC, mphamvu ya AC imayenda kuchokera mbali zonse ziwiri. Mwachitsanzo, mu sekondi iliyonse, mphamvu ya AC imasintha kuchoka ku zoyipa kupita ku zabwino komanso kuchoka ku zabwino kupita ku zoyipa. Mphamvu yayikulu yomwe imabwera m'nyumba mwanu ndiye chitsanzo chabwino kwambiri chamagetsi a AC.
V DC ndi AC
Ngati mumamvetsetsa bwino mphamvu za AC ndi DC, mulibe chilichonse chomvetsetsa za VDC ndi VAC.
Pano pali kufotokoza kosavuta.
VDC imayimira voteji ya DC ndipo VAC imayimira voteji ya AC. Ngati mutenga multimeter ya digito ndikuyipenda mosamala, mutha kuwona zolemba zonse ziwirizi. Komabe, ngati mukufuna kugwiritsa ntchito makonda awa pa multimeter, muyenera kudziwa kuti ndi mabwalo ati omwe amagwira ntchito ndi voteji ya DC komanso mabwalo omwe ali ndi voteji ya AC.
Kodi VAC ndingayipeze kuti?
Madera ambiri aku North America amagwiritsa ntchito 110 kapena 120 VAC m'mabanja abwinobwino. Mutha kupeza cholemba ichi pazida za AC. Komabe, zikafika ku Europe amagwiritsa ntchito 220VAC kapena 240VAC.
Chidule mwamsanga: Mphamvu yamagetsi ya 120 V AC imasiyana kuchokera ku 170 V mpaka ziro. Kenako imakweranso ku 170V. Mwachitsanzo, kusinthasintha mphamvu kumabwerezedwa ka 60 mu sekondi imodzi. Ichi ndichifukwa chake magwero ambiri a AC ndi 60Hz.
Mphamvu ya RMS 120 V AC
Zowonadi, 120V AC imasintha kukhala 170V ndikutsika mpaka ziro. Sine wave iyi ikufanana ndi 120 volts DC ndipo imadziwika kuti RMS.
Momwe mungawerengere mtengo wa RMS?
Nayi njira yowerengera RMS.
VMtengo wa RMS V=CHISONKHANO*1/√2
Mphamvu yapamwamba kwambiri ya 170V.
Choncho,
VMtengo wa RMS = 170*1/√2
VMtengo wa RMS = 120.21 V
Chifukwa chiyani timagwiritsa ntchito VAC?
Mudzataya mphamvu nthawi iliyonse mukayesa kusintha mphamvu kuchokera ku mawonekedwe amodzi kupita ku ena. Chifukwa chake, kuti achepetse kutha kwa mphamvuyi, majenereta amatulutsa magetsi pamagetsi apamwamba kwambiri ndikuwatumiza ngati magetsi osinthasintha.
Komabe, mabanja wamba safuna magetsi okwera kwambiri. Chifukwa cha izi, magetsi a AC amadutsa pa thiransifoma yotsika ndipo imapanga magetsi otsika omwe amagwiritsidwa ntchito kunyumba.
zofunika: Zida zambiri zamagetsi sizimayendera magetsi a AC. M'malo mwake, amagwiritsa ntchito magetsi otsika a DC. Chifukwa chake, magetsi otsika a AC amasinthidwa kukhala magetsi otsika a DC ndi chowongolera mlatho.
Onani zina mwazolemba zathu pansipa.
- Kupanga multimeter kwa batri yagalimoto
- Jenereta yoyesera yamagetsi yamagetsi
- Momwe mungayesere batire lagalimoto ndi multimeter
Maulalo amakanema
