Maulendo a wailesi: pa chip ndi chojambulira chosavuta

Papepala lino, tidzakambirana maulendo a wailesi ndi kufufuza ntchito za nyumba zosavuta. Nonse inu mukudziwa kuti pali maulendo angapo a ma wailesi. Ndipo zonsezi zimagawidwa kukhala kufalitsa, kwa kuyankhulana kwa makanema, pofuna kugwiritsidwa ntchito movomerezeka ndi wailesi. Kufalitsidwa kwa ma wailesi kumachitika pakati pa mapepala (AM, CB), mafunde aatali (DV, LW), mafunde a ultrashort (VHF, FM). Ndipo tsopano mudzaphunzira momwe mungapangire zipangizo zosavuta kulandira ma wailesi.

Detector radio

Chojambulachi chimapangidwa ndi aliyense wavotera wachisudzo. Ndipo mphamvu yokusungira iyo ngakhale kwa mwana, chifukwa palibe chovuta mmenemo. Kwa kupanga muyenera kupeza zinthu zotsatirazi:

1. Zosiyanasiyana za capacitor.
2. Constant capacitor yokhala ndi mphamvu zoposa 4700 pF.
3. Maseŵera okhala ndi kuthamanga kolimba kwaposa oposa 1500 ohms. Yokwanira kwathunthu TON-2.
4. Sililicon diode ya mtundu wa D9. Komabe, njira yatsopano yamakono yatsopano yamakono ndiyo yoyenera.
5. Zingwe zamkuwa ndi mandrel zimakhala zosachepera 40 mm.

Chithunzi chofotokozedwa pamwambapa cha wailesi yothandizira mafilimu chimatilola ife kumvetsa momwe kugwirizana kwa zinthu zonse kumachitika. Kusamala kwakukulu kuyenera kulipidwa pa kapangidwe ka antenna, kutsimikizira, kuyendetsa coil. Pazinthu izi zimayenera kulankhula mosiyana. Detector radio receiver ikhoza kugwiritsidwa ntchito pa mafunde ndi mafunde ochuluka, kotero kuti ntchito yake imafuna nyerere yonse.

Antenna, pansi ndi kupanga chojambula

Kuti maulendo a wailesi akufotokozedwa m'nkhaniyi kuti agwiritse ntchito SV, DV, KV, m'pofunika kupanga antenna. Zapangidwa kuchokera ku waya. Mungagwiritse ntchito kusungunula kosakanikirana, chinthu chachikulu ndi chakuti mtanda wake ndiposa 0.75 square meters. Mm. Koma kwambiri wandiweyani sayenera kugwiritsidwa ntchito. Kutalika kwa intaneti ya antenna ikuganiziridwa malinga ndi nthawi yomwe radio ikugwira ntchito. Kutalika kwa intaneti kuyenera kukhala kuchuluka kwa mafupipafupi omwe akuwonetsedwa mu mamita. Ngati tikulankhula za mamita 90 (3200 kHz), ndiye kuti kutalika kwa antenna kuyenera kukhala mamita 10. Kumayenera kuimitsidwa pamtunda wa mamita atatu ndikusungunuka mosamala ku makoma, mitengo, mitengo.

Kutentha mapaipi kungagwiritsidwe ntchito ngati nthaka. Koma njira yabwino idzakhala pini yachitsulo, yothamangitsidwa ndi mita imodzi pansi. Chophimbacho chimadulidwa kokha ndi waya wamkuwa. Komanso, ayenera kukhala makulidwe oposa 0,75 mm, kuti athe kuwonjezera mwayi, wina akhoza kupindika. Chophimbacho chimadulidwa pa mandrel wamphamvu, mapeto amakhala otetezedwa bwino. Chonde dziwani kuti mukufunikira pafupifupi 90 kutembenukira kuti muwombe, kotero mutenge mandrel malinga ndi kotheka. Zolinga zawailesizi ndi zabwino zokha chifukwa amatha kumvetsa mfundo zomwe amagwiritsa ntchito. Koma chidwi chake ndi chochepa kwambiri, motero ndi chithandizo chake n'zotheka kumvetsera kokha magetsi akuluakulu a wailesi. Ngakhalenso kugwirizana kwa amplifier kunja sikusunga LF.

Radiyo pa chip

Pamwambapo ndi chithunzi cha wailesi pa k174XA34 Chip. Pachigawo chochepa ichi, zigawo zingapo zimasonkhanitsidwa - detector, frequency converter, chizindikiro chokulitsa. N'zoona kuti chipangizochi sichitha, koma chimapangidwabe, ndipo mtengo wake ndi wotsika kwambiri. Ndipo ndi chiyaninso china chofunikira kwa hamvani yavumbulutso? Ngakhale ngati chinthu choterocho chiwonongeke, sichiri chisoni. Palinso mafananidwe achilendo, omwe amachititsa kuti apange mailesi amtundu wa VHF, ndipo mtengo wawo si waukulu kwambiri. Ndondomeko yomwe ili pamwambayi ndi yabwino chifukwa ilibe zinthu zochepa, koma imakupatsani inu kulandira ma wailesi m'mawotchi. Chosavuta ndi chakuti zidzakhala zofunikira kupanga zina zotsika- amplifier amplifier , chifukwa chigamulo cha chip ndi chizindikiro chofooka kwambiri.

Kutsiliza

Kuzindikira pang'ono za kapangidwe ka ma radio, mukhoza kuyamba kupanga zipangizo zovuta kwambiri. Zamakono zamakono zimakuthandizani kuti musapange zokhazokha, zowonjezereka, komanso zowonjezera zomwe zingakhale zothandiza pa zosangalatsa zakunja, pa ntchito yomanga, ndi pa kuyendetsa galimoto. Mwachitsanzo, kuti muyambe kuyambira. M'mawu ena, ma radio ndi othandiza kwambiri omwe amagwiritsidwa ntchito lero paliponse.