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一、系統概述

    本套(tao)件主要是為了讓(rang)學(xue)生加強(qiang)模擬電(dian)子和數字電(dian)子電(dian)路的學(xue)習，提(ti)高學(xue)生的動手調試能力，將一(yi)些常見的電(dian)路模塊組合在一(yi)起以(yi)實現(xian)特定的功能。

    此系統可通過液晶屏顯示的內容(rong)來提示操(cao)作(zuo)者逐步地完(wan)成兩個功能模塊(kuai)的實驗。

    1、通(tong)過正弦(xian)波(bo)發(fa)(fa)生(sheng)電路(lu)產(chan)生(sheng)正弦(xian)波(bo)再通(tong)過功(gong)率放大電路(lu)使揚聲器發(fa)(fa)聲。

    2、通過(guo)555電路產生方波(bo)且可通過(guo)調節方波(bo)頻率(lv)及占空(kong)比來實現直流(liu)電機(ji)轉速的變化，直流(liu)電機(ji)通過(guo)H橋進(jin)行(xing)驅動(dong)。

二、電路說明

    系統(tong)主要包括電(dian)(dian)(dian)(dian)(dian)源電(dian)(dian)(dian)(dian)(dian)路(lu)、主控電(dian)(dian)(dian)(dian)(dian)路(lu)、繼電(dian)(dian)(dian)(dian)(dian)器驅(qu)動(dong)和控制電(dian)(dian)(dian)(dian)(dian)路(lu)、正弦波(bo)(bo)發生(sheng)電(dian)(dian)(dian)(dian)(dian)路(lu)、功(gong)放電(dian)(dian)(dian)(dian)(dian)路(lu)、555矩(ju)形波(bo)(bo)發生(sheng)電(dian)(dian)(dian)(dian)(dian)路(lu)、H橋驅(qu)動(dong)電(dian)(dian)(dian)(dian)(dian)路(lu)、紅外檢測(ce)電(dian)(dian)(dian)(dian)(dian)路(lu)、液晶屏顯示(shi)電(dian)(dian)(dian)(dian)(dian)路(lu)。