摘要
提高调幅发射机三项指标的关键之一,是用优质声频电路作为调幅放大电路。本文的电路综合了近十年来电声领域的一系列成果,克服一般晶体管功放电路的热不稳定和TIM失真等致命弱点,获得比以往电子管电路更佳的电声指标和可靠性。在GZ-1-A发射机的改装试验表明,整机三大指标和可靠性得到显著改善。
Using high quality audio circuit as AM amplification circuit is one
of the key of increasing three indexes in AM transmitter. The circuits in the
article synthesize a series of positive results in audio field for ten years, got
rid of thermal instability and TIM distortion of general transister amplifier
circuit and require better index and reliability than that of before. The experi-
mance of refitting GZ-1-A transmitter shows that overall three indexes and relia-
bility have been improved.
出处
《广播与电视技术》
北大核心
1989年第6期23-28,共6页
Radio & TV Broadcast Engineering
