Quvvat kuchaytirgichida bo‘ladi, ya’ni kirish signali manbai bilan muvofiqlashgan bo‘ladi.
va kuchaytirgich yuklama qarshiligi qiymatlari nisbatlarini kuchlanish kuchaytirgichi ( << ), tok kuchaytirgichi ( >> ) va quvvat kuchaytirgichi ( ) ga ajratish mumkin.
Bundan tashqari, o‘zgarmas tok kuchaytirgichi parametri bo‘lib nol dreyfi hisoblanadi. Nol dreyfi bu barqarorlikni buzuvchi ta’sirlar (kuchlanish manbai qiymatining tebranishi, temperatura va boshqalar) natijasida kuchaytirgich elementlari ish rejimlarining o‘zgarishi bo‘lib, natijada kuchaytirgich chiqishida soxta signal yuzaga keladi.
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