江蘇控制箱AD16系列蜂鳴器價格實惠

    460Molex35150-3319Molex38739-0187Molex42820-5222Molex39-53-2064Molex501912-4590Molex52207-2485Molex35151-0110Molex38739-0237Molex42820-6212Molex39-53-2065Molex501912-4790Molex52207-2585Molex35151-0119Molex38739-0433Molex42820-6222Molex39-53-2074Molex501920-3001Molex52207-2685Molex35151-0210Molex38739-0518Molex42824-4002Molex39-53-2075Molex501920-4001Molex52207-2885Molex35151-0210Molex38739-0588Molex42825-4001Molex39-53-2084Molex501930-1100Molex52207-3060Molex35151-0212Molex38739-0601Molex42825-4002Molex39-53-2085Molex501931-2070Molex52207-3085Molex35151-0214Molex38739-0604Molex42825-4003Molex39-53-2094Molex501931-3070Molex52213-0211Molex35151-0216Molex38740-0103Molex42878-4218Molex39-53-2095Molex501931-4070Molex52213-0311Molex35151-0219Molex38740-3102Molex42878-6218Molex39532-1002Molex501939-0300Molex52213-0417Molex35151-0310Molex38740-3706Molex42878-6362Molex39532-1003Molex501939-0500Molex52266-0211Molex35151-0319Molex38740-4606Molex42878-8408Molex39532-1004Molex501951-2400Molex5226。當(dāng)添加交流電壓后，會因為壓電效應(yīng)，而生成機(jī)械變形伸展及收縮，利用此特性使金屬片振動而發(fā)出聲響。江蘇控制箱AD16系列蜂鳴器價格實惠

    硬件原理圖通過硬件原理圖可知，圖中三極管用了PNP型，所以要使蜂鳴器發(fā)聲只要給單片機(jī)，由此可以為下文的程序編寫提供關(guān)鍵參考。9．4．4程序設(shè)計01#include0203sbitBUZZER=P3^7;0405voidmain(void)06{07BUZZER=0;08while(1);09}9．4．5代碼分析序號1：包含51單片機(jī)寄存器定義地頭文件序號3：位定義蜂鳴器為序號5-9：main程序序號7：使，蜂鳴器發(fā)聲序號8：循環(huán)等待9．5繼電器實驗在現(xiàn)代自動控制設(shè)備中，都存在一個電子電路（弱電）與電氣電路（強(qiáng)電）的互相連接問題，一方面要使電子電路的控制信號能夠控制電氣電路的執(zhí)行元件（如電動機(jī)、電磁鐵、電燈等），另一方面又要為電子線路的電氣電路提供良好的電隔離，以保護(hù)電子電路和人身的安全。繼電器便能完成這一橋梁作用。9．5．1實例功能本實例通過單片機(jī)來控制繼電器吸合、釋放，讀者可以熟練掌握繼電器的使用方法。在本例中讀者也可以用繼電器的常開、常閉觸點控制電燈的亮滅，實現(xiàn)“以小控大”。圖9-14繼電器實驗演示圖9．5．2器件和原理繼電器是一種電子控制器件，它具有控制系統(tǒng)（又稱輸入回路）和被控制系統(tǒng)（又稱輸出回路），通常應(yīng)用于自動控制電路中。它實際上是用較小的電流去控制較大電流的一種“自動開關(guān)”。 長寧區(qū)施耐德AD16系列蜂鳴器代理品牌壓電式蜂鳴器主要由多諧振蕩器、壓電蜂鳴片、阻抗匹配器及共鳴箱、外殼等組成。

    5559-02P)Molex43045-1422Molex45481-0270Molex50-36-1678Molex52808-1370Molex35749-0810Molex39-01-2025(5557-02R-210)Molex43045-1424Molex45481-0283Molex50-36-1687Molex52808-1371Molex35749-0910Molex39-01-2026Molex43045-1425Molex45483-0130Molex50-36-1688Molex52808-1470Molex35749-1460Molex39-01-2026Molex43045-1426Molex45483-0087Molex50-36-1713Molex52808-1471Molex35750-0810Molex39-01-2026Molex43045-1600Molex45483-0078Molex50-36-1716Molex52808-1670Molex35750-0910Molex39-01-20405557-04RMolex43045-1601Molex45483-0418Molex50-36-1734Molex52808-1870Molex35750-1010Molex39-01-20405557-04RMolex43045-1602Molex45485-0093Molex50-36-1869Molex52808-2071Molex35750-1210Molex39-01-20405557-04RMolex43045-1606Molex45485-0224Molex50-36-1871Molex52808-2271Molex35750-1910Molex39-01-20405557-04RMolex43045-1609Molex45485-0223Molex50-36-2277Molex52808-2370Molex35750-4810Molex39-01-20415559-04PMolex43045-1610Molex45485-0128Molex50-36-2301Molex52808-3070Molex35760-7200Molex39-01-20415559-04PMolex43045-1612Molex45504-0。

    5556T)Molex43045-0606Molex44516-0009(PK-44516-004)Molex502584-0270Molex52610-1675Molex35363-0460Molex39-00-0038Molex43045-0607Molex44516-0012Molex502584-0360Molex52610-1771Molex35363-0460Molex39-00-0040Molex43045-0608Molex44516-0013Molex502584-0460Molex52610-1871Molex35363-0560Molex39-00-0040Molex43045-0609Molex44520-0001Molex502584-0470Molex52610-1872Molex35363-0660Molex39-00-0041單粒=39-00-0040卷帶Molex43045-0610Molex44520-0004Molex502584-0670Molex52610-1890Molex35363-0760Molex39-00-0046Molex43045-0611Molex44520-0006Molex502584-0860Molex52610-2071Molex35363-0860Molex39-00-0046Molex43045-0612Molex44560-0001Molex502584-0870Molex52610-2072Molex35363-0960Molex39-00-0047單粒=卷帶Molex43045-0613Molex44560-0002Molex502584-1060Molex52610-2075Molex35363-1060Molex39-00-0048Molex43045-0614Molex44560-0004Molex502584-1070Molex52610-2271Molex35363-1160Molex39-00-0049單粒=卷帶39-00-0048Molex43045-0615Molex44560-0012Molex502584-1270Molex52610-2471Molex35363-1260Molex39-00-0059Molex43045-0616Molex4。有源蜂鳴器和無源蜂鳴器的根本區(qū)別是產(chǎn)品對輸入信號的要求不一樣。

    電路圖箭頭朝里：PNP單極管；箭頭朝外：NPN的單極管小圓圈為插針。用一根杜邦線將插針與單片機(jī)引腳相連，單片機(jī)引腳輸出低電平，單極管導(dǎo)通，e、c連通，形成回路，有源蜂鳴器發(fā)聲；無源蜂鳴器需要（與蜂鳴器種類有關(guān)，實際使用時可測試）的音頻信號，即產(chǎn)生一個不斷的高低電平變化，高低電平變化頻率為3、單片機(jī)I/O口驅(qū)動能力非常微弱，不可以通過單片機(jī)I/O口直接驅(qū)動蜂鳴器，必須通過外接驅(qū)動電路，使R39電阻，單極管和R19電阻構(gòu)成電流的放大電路從而可以驅(qū)動蜂鳴器，而不是依靠單片機(jī)管腳驅(qū)動蜂鳴器4、占空比：高電平時間方波：高電平、低電平時間相同~：取反符號，將管腳輸出電平狀態(tài)取反含有上拉電阻，默認(rèn)輸出高電平。高低電平各延時一段時間。接通電源后1.5~15V直流工作電壓多諧振蕩器起振輸出1.5~2.5kHZ的音頻信號，阻抗匹配器推動壓電蜂鳴片發(fā)聲。長寧區(qū)施耐德AD16系列蜂鳴器代理品牌

AD16-16系列蜂鳴器壽命長，耗能低，體積小，重量輕，可靠性好，造型美觀和制造精巧，聲音清脆警醒。江蘇控制箱AD16系列蜂鳴器價格實惠

    ex502380-1300Molex52465-3071Molex35184-1200Molex38770-0105Molex43030-0006Molex44428-0602Molex502380-1400Molex52465-4071Molex35184-1400Molex38770-0106Molex43030-0006Molex44428-0801Molex502380-1500Molex52480-4810Molex35189-0110Molex38770-0107Molex43030-0007袋裝(43030-0001卷)Molex44428-0802Molex502381-0000Molex35189-0200Molex38770-0108Molex43030-0008Molex44428-0803Molex502381-0000Molex52484-0310Molex35189-0201Molex38770-0109Molex43030-0009單粒=卷帶43030-0003Molex44428-1001Molex502382-0270Molex35189-0210Molex38770-0110Molex43030-0010單粒=43030-0004Molex44428-1002Molex502382-0370Molex52484-0510Molex35189-0261Molex38770-0111Molex43030-0011Molex44428-1201Molex502382-0470Molex52484-0510Molex35189-0274Molex38770-0112Molex43030-0012Molex44428-1202Molex502382-0570Molex52484-0710Molex35189-0281Molex38770-0113Molex43030-0053Molex44428-1401Molex502382-0670Molex52484-0810Molex35189-0290Molex38770-0114Molex43031-0001Molex44428-1402Molex502382-0770Molex52559-0652Molex35189-0360Molex38770-0115Molex430。江蘇控制箱AD16系列蜂鳴器價格實惠