Kani waa wareegga gudbinta FM-yar oo yar. Waxaan filayaa in tani ay tahay tan ugu fudud, ugu fudud iyo dabcan…. Wareegtan waa in la daboolaa, sax? Qiyaasta ugu badan ee 1.1 - 3 mitir. at 1.8 volts.
wareegga gudbiyaha
Faa'iidada ugu weyn ee wareeggan ayaa ah in isha korontadu ay tahay batari 1.5 volt ah (xajmi kasta), taas oo u oggolaanaysa PCB iyo baytari in lagu hayo meel aad u adag. Gudbiyuhu wuxuu xitaa ku shaqayn karaa baytariyada caadiga ah ee NiCd, tusaale ahaan batari cabbirkiisu yahay 750mAh AA wuxuu socon karaa ilaa 500 saacadood (halka uu 1.4mA ku jiidayo 1.24V) taasoo u dhiganta 20 maalmood.
Transistor-ku maaha qayb muhiim ah oo ka mid ah wareegga, laakiin doorashada taransistor-ka sanqadha sare ee soo noqnoqda/hooseeya waxay gacan ka geysan kartaa hagaajinta tayada codka gudbiyaha iyo baaxadda. PN2222A, 2N2222A, taxanaha BFxxx, BC109B, C, iyo xitaa kuwa caanka ah ee BC238 ayaa si fiican u shaqeeya. Furaha wareegga tamarta yar ee si fiican u shaqaynaya waa in la isticmaalo hFE/hoosee Ceb (karka isgoysyada gudaha) transistor-ka sare.
Dhammaan makarafoonada kondenser-ka ahi ma laha astaamo koronto oo isku mid ah, markaa ka dib markaad ka shaqeysiiso wareegga, isticmaal resistor variable 10k halkii aad ka isticmaali lahayd 5.6K, kaas oo hadda siiya makarafoonka cod-weyneeye gudaha ah oo ku hagaajiya goobta macaan ee codka leh baaxadda ugu fiican iyo tayada . Ka dib u fiirso qiimaha iska caabiyaha doorsoomka oo ku beddel resistor go'an.
Qaybta muhiimka ah waa inductor L oo ay tahay in lagu sameeyo gacanta. Qaado gabal 0.5mm ah (AWG24) silig naxaas dhalaalaysan oo ku duub laba dhexroor 4-5mm si dabacsan goobada. Cabbirrada siligga ayaa sidoo kale laga yaabaa inay kala duwanaadaan. Shaqada inteeda kale waxay ku xidhan tahay aqoontaada iyo heerka khibradaada ee inductors: Ku rakib raadiyaha FM agagaarka wareegga oo deji inta jeer ee meel aan soo dhawayn lahayn. Dabool koronto wareegga oo dhig ul bir ah wareegga inductor si loo go'aamiyo qiimaheeda. Markaad hesho barta saxda ah, hagaaji dabacsanaanta inductor iyo, haddii loo baahdo, tirada leexashada. Marka wax waliba si fiican u shaqeeyaan, waxaad isticmaali kartaa capacitor-ka trimmer si aad u samayso hagaajin joogto ah. Halkaa marka ay marayso, waxa laga yaabaa in aad caawimo ka hesho qof khibrad leh. Ha iloobin inaad ka ilaaliso inductctor-ka ka hortagga xoogagga dibadda adigoo ku shubaya xoogaa xabag ah. Haddii soo dhawaynta raadiyaha ay ku lunto dhowr mitir gudahood, tani waxaa sababi kara hagaajinta gariiradda oo khaldan oo waxaad dhab ahaantii dhagaysanaysaa iswaafajinta gudbiyaha halkii aad ka dhagaysan lahayd inta jeer ee xarunta. Raadiyaha ka fogee wareegga oo hagaaji. Way fududahay haddii aad taqaan sida loo isticmaalo oscilloscope xaaladdan.
Qayb kasta waa inay fududaato in lagu rakibo PCB-ga hoose. Ogsoonow in hogaanka transistor-ku ay tahay in si sax ah loogu xidho. Sidoo kale isku day inaad ku xidho qaybta dhaqaaqa ee capacitor trimmer dhinaca +, tani waxay kaa caawin kartaa isbeddelada inta jeer ee aan la rabin marka la hagaajinayo. Jaantuska PCB waa in lagu daabacaa 300DPI, oo faylka TIFF ayaa lagu dejiyay halkan.
Qaabka Gudbiyaha FM-yar ee PCB:
wareegga gudbiyaha
data Technical:
Qulqulka saadka: 1.1 - 3 volts
Isticmaalka tamarta: 1.8mA at 1.5 volts
Dhererka: ilaa 30 mitir. at 1.5 volts
wareegga gudbiyaha
