結(jié)構(gòu)原理蜂鳴器1.壓電式蜂鳴器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。有的壓電式蜂鳴器外殼上還裝有發(fā)光二極管。多諧振蕩器由晶體管或集成電路構(gòu)成。當接通電源后(),多諧振蕩器起振,輸出，阻抗匹配器推動壓電蜂鳴片發(fā)聲。蜂鳴器壓電蜂鳴片由鋯鈦酸鉛或鈮鎂酸鉛壓電陶瓷材料制成。在陶瓷片的兩面鍍上銀電極，經(jīng)極化和老化處理后，再與黃銅片或不銹鋼片粘在一起。2.電磁式蜂鳴器電磁式蜂鳴器由振蕩器、電磁線圈、磁鐵、振動膜片及外殼等組成。接通電源后，振蕩器產(chǎn)生的音頻信號電流通過電磁線圈，使電磁線圈產(chǎn)生磁場。振動膜片在電磁線圈和磁鐵的相互作用下，周期性地振動發(fā)聲。 外殼（亥姆霍茲共振聲腔）頻率、磁環(huán)的磁強漆包線的線徑有直接關系。青浦區(qū)直供AD16系列蜂鳴器公司

    比由pwm方波驅(qū)動的蜂鳴器發(fā)出的聲音效果更好，沒有雜音，從而改善了蜂鳴器音質(zhì)。附圖說明圖1為本發(fā)明的蜂鳴器驅(qū)動電路的結(jié)構(gòu)框圖；圖2為本發(fā)明的蜂鳴器驅(qū)動電路的電路原理圖；圖3為本發(fā)明的振蕩回路的波形圖；圖4為本發(fā)明的振蕩控制電路的邏輯示意圖；圖5為本發(fā)明的振蕩回路在時刻的等效電路；圖6為本發(fā)明的振蕩回路在第二時刻的等效電路。具體實施方式為使本領域的普通技術人員更加清楚地理解本發(fā)明的目的、技術方案和優(yōu)點，以下結(jié)合附圖和實施例對本發(fā)明做進一步的闡述。如圖1所示，在本發(fā)明一個實施例中，蜂鳴器驅(qū)動電路包括有依次連接的電源控制電路10、振蕩控制電路20和振蕩回路30，所述電源控制電路10與mcu連接，mcu輸出高、低電平控制所述電源控制電路10導通或關斷，從而控制蜂鳴器驅(qū)動電路與電源之間的電路導通或關斷。當所述電源控制電路10導通時，所述振蕩控制電路20控制所述振蕩回路30振蕩并于蜂鳴器兩端產(chǎn)生正弦波信號和第二正弦波信號，所述正弦波信號和第二正弦波信號頻率相同、相位相反。如圖2所示，所述電源控制電路10包括有電阻r1和開關管q1，所述開關管q1的端與所述振蕩控制電路20連接，所述開關管q1的第二端接地。青浦區(qū)直供AD16系列蜂鳴器公司發(fā)聲形式：連續(xù)、斷續(xù) 接線方式為接插式； 頭部有：圓形，方形，矩形。

    0-1600Molex39-53-2184Molex50212-8100Molex52271-1479Molex35155-1300Molex38750-6606Molex43020-1601Molex39-53-2185Molex50217-8000Molex52271-1490(找52271-1479替代）Molex35155-1500Molex38750-7505Molex43020-1800Molex39-53-2194Molex50217-8000Molex52271-1569Molex35156-0200Molex38751-3306Molex43020-1801Molex39-53-2195Molex50217-8100Molex52271-1579Molex35156-0300Molex38752-4606Molex43020-2000Molex39-53-2204Molex50217-9001Molex52271-1669Molex35156-0300Molex38759-0012Molex43020-2001Molex39-53-2205Molex50217-9001Molex52271-1679Molex35156-0400Molex38759-0031Molex43020-2200Molex39-53-2205Molex50217-9001Molex52271-1869Molex35156-0400Molex38759-0278Molex43020-2201Molex39-53-2205Molex50217-9101Molex52271-1879Molex35156-0500Molex38759-0281Molex43020-2400Molex39-53-2244Molex502225-0801Molex52271-2069Molex35156-0600Molex38759-0309Molex43020-2401Molex39-53-2245Molex502250-1791Molex52271-2079Molex35156-0700Molex38759-0329Molex43025-0200Molex39-53-2254Molex502250-2191Molex52271-2269Molex35156-0800Molex38759。

    散/無料帶=卷39-00-0083RS有貨）Molex43045-0812Molex44764-1003Molex502790-4091Molex52745-1197Molex35507-0700Molex39-00-0089Molex43045-0813Molex44764-1201Molex502790-5091Molex52745-1296Molex35507-0800Molex39-00-0090Molex43045-0814Molex44764-1202Molex502790-6091Molex52745-1296Molex35507-0800Molex39-00-0095Molex43045-0815Molex44764-1401Molex502790-6491Molex52745-1297Molex35507-0900Molex39-00-0096Molex43045-0816Molex44764-1402Molex502790-8091Molex52745-1397Molex35507-1000Molex39-00-0120Molex43045-0818Molex44764-1601Molex50-29-1031Molex52745-1496Molex35507-1000Molex39-00-0121Molex43045-0819Molex44764-1602Molex50-29-1061Molex52745-1497Molex35507-1100Molex39-00-0123Molex43045-0820Molex44764-1802Molex50-29-1409Molex52745-1597Molex35507-1200Molex39-00-0125Molex43045-0821Molex44764-2401Molex50-29-1608Molex52745-1696Molex35507-1300Molex39-00-0126Molex43045-0822Molex44764-2402Molex50-29-1649Molex52745-1697Molex35507-1400Molex39-00-0127Molex43045-0823Molex44764-2403Molex50-29-1758Molex52745-1797Mol。蜂鳴器的作用 蜂鳴器是一種一體化結(jié)構(gòu)的電子訊響器。

    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。壓電蜂鳴片由鋯鈦酸鉛或鈮鎂酸鉛壓電陶瓷材料制成。青浦區(qū)直供AD16系列蜂鳴器公司

一般會采用三腳抽頭電感，一般為10倍的升壓比，有些高聲壓110dB以上的可能要用小功率變壓器實現(xiàn)升壓。青浦區(qū)直供AD16系列蜂鳴器公司

    671Molex35746-0410Molex39-00-0431Molex43045-1409Molex44915-0021Molex503548-0620Molex52808-0770Molex35746-0410Molex39-00-0432Molex43045-1410Molex44985-0001Molex503548-1220Molex52808-0771Molex35747-0110Molex39-00-0433Molex43045-1411Molex45280-0401Molex503548-1620Molex52808-0870Molex35747-0210Molex39-00-0434Molex43045-1412Molex45280-0602Molex503552-0620Molex52808-0871Molex35747-0310Molex39-00-0435Molex43045-1413Molex45280-0653Molex503552-1220Molex52808-0970Molex35747-0410Molex39-01-0023Molex43045-1414Molex45280-1203Molex503552-1620Molex52808-1070Molex35748-0110Molex39-01-0063Molex43045-1418Molex45280-1053Molex503552-1820Molex52808-1170Molex35748-0110Molex39-01-0069Molex43045-1419Molex45280-2402Molex50-36-1672Molex52808-1171Molex35748-0210Molex39-01-2020Molex43045-1420Molex45339-1600Molex50-36-1673（黑色）阻燃性阻燃性94V-0=39-01-2020（白色）阻燃性94V-2Molex52808-1270Molex35748-0310Molex39-01-2020Molex43045-1421Molex45481-0097Molex50-36-1675Molex52808-1271Molex35748-0410Molex39-01-2021。青浦區(qū)直供AD16系列蜂鳴器公司