RADIOPRIYOMNIK

RADIOPRIYOMNIK (az radio… va priyomnik — qabulkunanda), jihozest, ki yakjoya bo antenna radiosignalho yo radioafkanishoti tabiiro qabul karda, taqviyat medihad va akhboroti onro baroi istifoda omada mekunad. Radiopriyomnikho dar radioshunavoni, televizioi, aloqa, radiolo­katsiya (nig. Stansiyai radiolokatsioni) va gayra istifoda meshavand. Radiopriyomnikho vobasta ba tainot, usuli qabul kardani radiomavjho, namudi kor, usuli modulyatsiya, diapazoni radiomavjhoi qabulshavanda, usuli tamin bo energiya va gayra gunogunand.

Radiopriyomnik vazifahoi zerinro ijro mekunad: selekksiyai basomadho — az hamai spektri radiobasomadi lappishhoi elektromagnitii ba antenna voridshavanda judo kardani ha­mon qismash, ki akhbori matlubro dar bar dorad; purquvvatkun i — afzun kardani energiyai lappishhoi susti qabulshuda to ba andozai qobili istifoda gardidani onho; detektironi — ba lappishhoi elektrik homili akhbor tabdil dodani lappishhoi qabulgardidan modulyatsiyashuda. In vazifaho az tarafi zanjirhoi rezonansii selektivi — basomadi (konturhoi lappish, rezonatorhoi hajmi, filtrhoi elektri), ki ba basomadhoi matlub soz karda meshavand, purquvvatkunandahoi lappishhoi elektri va de-tektorhoi tarkibi Radiopriyomnik ijro megardand. Nishondihandahoi asosii ko­ri Radiopriyomnik inhoand: hassosi — qobiliyati qabul karda tavonistani ra­diosignalhoi sust; selektivi — qobiliyati az lappishhoi nomatlub (khalalho) judo karda giriftani signali mufid; stabili—qobiliyati muddati daroz be amalhoi ilovagii dasti (masalan, tanzim kar­dan, toftani gushakho va gayra) qabul karda tavonistani radiosignalho. Hozir Radiopriyomnikhoi lampagii navi supergeterodin va Radiopriyomnikhoi nimnoqili (tranzistori), ki khele hassosand, beshtar mamuland. Nig. Radioperedatchik, Radiopriyomniki tranzistori, Radiotekhnika.

Ad.: Chistyakov N. I., Sidorov V. M. Radiopriyomnie ustroystva, M., 1974.