Question

英语翻译近年来随着计算机和互联网的迅速普及,宽带放大器成为音响、有线电视、无线通信等系统中必不可少的部分.本系统采用ST

Answer 1

In recent years,with the rapid popularity of computers and the Internet,broadband amplifier for audio,cable television,wireless communication system such as the essential part of the.STC89c52 single-chip microcomputer as the controller is applied in this system,based on the programmable gain amplifier AD603 amplification circuit of the core,designed and produced with presets and SPC functions such as dc amplifier gain and the use of dc power supply.Using AD603 of gain control amplifier circuit implementation within 0 40 db continuous adjustment,manual and largest RMS Vo 2 v or higher output voltage sine wave,the output signal (form no obvious distortion; In 0 4 MHZ gain within passband fluctuation.ldb or less; Output signal after RMS detection,through the A/D conversion for digital signal,and output shows through micro controller.system consists of six modules